Annex C STANDARD FOR THE PRESENTATION OF NUCLEOTIDE AND AMINO ACID SEQUENCE LISTINGS IN INTERNATIONAL PATENT APPLICATIONS UNDER THE PCT

  INTRODUCTION

  • 1. This Standard has been elaborated so as to provide standardization of the presentation of nucleotide and amino acid sequence listings in international patent applications. The Standard is intended to allow the applicant to draw up a single sequence listing which is acceptable to all receiving Offices, International Searching and Preliminary Examining Authorities for the purposes of the international phase, and to all designated and elected Offices for the purposes of the national phase. It is intended to enhance the accuracy and quality of presentations of nucleotide and amino acid sequences given in international applications, to make for easier presentation and dissemination of sequences for the benefit of applicants, the public and examiners, to facilitate searching of sequence data and to allow the exchange of sequence data in electronic form and the introduction of sequence data onto computerized databases.

  DEFINITIONS

  • 2. For the purposes of this Standard:
    • (i) the expression "sequence listing" means a nucleotide and/or amino acid sequence listing which gives a detailed disclosure of the nucleotide and/or amino acid sequences and other available information;
    • (i-bis) the expression "sequence listing forming part of the international application" means a sequence listing contained in the international application as filed (as referred to in paragraph 3), including any sequence listing or part thereof which is included in the international application under Rule 20.5(b)  or (c), which is considered to have been contained in the international application under Rule 20.6(b), or which has been corrected under Rule 26, rectified under Rule 91  or amended under Article 34(2); or a sequence listing included in the international application by way of an amendment under Article 34(2)(b)  of the description in relation to sequences contained in the international application as filed (as referred to in paragraphs 3bis and 3ter);
    • (i-ter) the expression "sequence listing not forming part of the international application" means a sequence listing which does not form part of the international application but is furnished for the purposes of the international search or international preliminary examination (as referred to in paragraphs 4 and 4bis);
    • (ii) sequences which are included are any unbranched sequences of four or more amino acids or unbranched sequences of ten or more nucleotides. Branched sequences, sequences with fewer than four specifically defined nucleotides or amino acids as well as sequences comprising nucleotides or amino acids other than those listed in Appendix 2, Tables 1, 2, 3 and 4, are specifically excluded from this definition;
    • (iii) "nucleotides" embrace only those nucleotides that can be represented using the symbols set forth in Appendix 2, Table 1. Modifications, for example, methylated bases, may be described as set forth in Appendix 2, Table 2, but shall not be shown explicitly in the nucleotide sequence;
    • (iv) "amino acids" are those L-amino acids commonly found in naturally occurring proteins and are listed in Appendix 2, Table 3. Those amino acid sequences containing at least one D-amino acid are not intended to be embraced by this definition. Any amino acid sequence that contains post-translationally modified amino acids may be described as the amino acid sequence that is initially translated using the symbols shown in Appendix 2, Table 3, with the modified positions, for example, hydroxylations or glycosylations, being described as set forth in Appendix 2, Table 4, but these modifications shall not be shown explicitly in the amino acid sequence. Any peptide or protein that can be expressed as a sequence using the symbols in Appendix 2, Table 3, in conjunction with a description elsewhere to describe, for example, abnormal linkages, cross-links (for example, disulfide bridge) and end caps, non-peptidyl bonds, etc., is embraced by this definition;
    • (v) "sequence identifier" is a unique integer that corresponds to the SEQ ID NO assigned to each sequence in the listing;
    • (vi) "numeric identifier" is a three-digit number which represents a specific data element;
    • (vii) "language-neutral vocabulary" is a controlled vocabulary used in the sequence listing that represents scientific terms as prescribed by sequence database providers (including scientific names, qualifiers and their controlled-vocabulary values, the symbols appearing in Appendix 2, Tables 1, 2, 3 and 4, and the feature keys appearing in Appendix 2, Tables 5 and 6);
    • (viii) "competent Authority" is the International Searching Authority that is to carry out the international search and to establish the written opinion of the International Searching Authority on the international application, or the International Preliminary Examining Authority that is to carry out the international preliminary examination on the international application.

  SEQUENCE LISTINGS

  Sequence Listing Forming Part of the International Application

  • 3. A sequence listing which is contained in the international application as filed:
    • (i) shall be presented as a separate part of the description, be placed at the end of the application, preferably be entitled "Sequence Listing", begin on a new page and have independent page numbering; preferably, the sequence listing shall not be reproduced in any other part of the application; subject to paragraph 36, it is unnecessary to describe the sequences elsewhere in the description;
    • (ii) shall present the sequences represented in the sequence listing and other available information in the sequence listing in accordance with paragraphs 5 to 35;
    • (iii) if contained in an international application filed in electronic form, shall be in an electronic document format and filed by a means of transmittal in accordance with paragraph 37.
  • 3bis. Any correction under Rule 26, rectification under Rule 91  or amendment under PCT Article 34(2)  of the description submitted in relation to a sequence listing contained in the international application filed on paper and any sequence listing included in the international application by way of an amendment under Article 34(2)(b)  of the description in relation to sequences contained in the international application filed on paper shall be submitted in accordance with Rule 26.4, Rule 91  or Rule 66.8, respectively.
  • 3ter. Any correction under Rule 26, rectification under Rule 91  or amendment under Article 34(2)(b)  of the description submitted in relation to a sequence listing contained in the international application filed in electronic form and any sequence listing included in the international application by way of an amendment under Article 34(2)(b)  of the description in relation to sequences contained in the international application filed in electronic form shall be submitted in the form of a sequence listing in electronic form comprising the entire listing with the relevant correction, rectification or amendment. Any such sequence listing:
    • (i) shall preferably be entitled "Sequence Listing – Correction", "Sequence Listing – Rectification" or "Sequence Listing – Amendment", as the case may be, and have independent page numbering;
    • (ii) shall present the sequences represented in the sequence listing and other available information in the sequence listing in accordance with paragraphs 5 to 35; where applicable, the original numbering of the sequences in the international application as filed (as referred to in paragraph 5) shall be maintained; otherwise, the sequences shall be numbered in accordance with paragraph 5;
    • (iii) shall be in an electronic document format and filed by a means of transmittal in accordance with paragraph 38.

  Sequence Listing Not Forming Part of the International Application

  • 4. A sequence listing furnished under Rule 13ter for the purposes of the international search or international preliminary examination:
    • (i) shall preferably be entitled "Sequence Listing – Rule 13ter";
    • (ii) shall present the sequences represented in the sequence listing and other available information in the sequence listing in accordance with paragraphs 5 to 35; where applicable, the original numbering of the sequences in the international application as filed (as referred to in paragraph 5) shall be maintained; otherwise, the sequences shall be numbered in accordance with paragraph 5;
    • (iii) if furnished on paper in accordance with Rule 13ter.1(b), shall have independent page numbering;
    • (iv) if furnished in electronic form, shall be in an electronic document format and filed by a means of transmittal in accordance with paragraph 39;
    • (v) if furnished in electronic form together with the international application, shall be identical to the sequence listing as contained in the application and be accompanied by a statement that "the information recorded in electronic form furnished under Rule 13ter   is identical to the sequence listing as contained in the international application";
    • (vi) if furnished subsequently to the filing of the international application, shall not go beyond the disclosure in the international application as filed and be accompanied by a statement to that effect; any such sequence listing shall contain only those sequences that were disclosed in the international application as filed.
  • 4bis. Any correction under Rule 26, rectification under Rule 91  or amendment under Article 34(2)(b)  of the description submitted in relation to a sequence listing contained in the international application as filed and any sequence listing included in the international application by way of an amendment under Article 34(2)(b)  of the description in relation to sequences contained in the international application as filed shall be accompanied, for the purposes of the international search or international preliminary examination, by a sequence listing in electronic form in an electronic document format in accordance with paragraph 39, comprising the entire listing including any such correction, rectification or amendment, whenever this is required by the competent authority, unless such listing in electronic form is already available to that authority in a form and manner acceptable to it. Any such sequence listing in electronic form:
    • (i) shall preferably be entitled "Sequence Listing – Correction – Rule 13ter", "Sequence Listing – Rectification – Rule 13ter" or "Sequence Listing – Amendment – Rule 13ter", as the case may be;
    • (ii) shall present the sequences represented in the sequence listing and other available information in the sequence listing in accordance with paragraphs 5 to 35; where applicable, the original numbering of the sequences in the international application as filed (as referred to in paragraph 5) shall be maintained; otherwise, the sequences shall be numbered in accordance with paragraph 5;
    • (iii) shall be filed by a means of transmittal in accordance with paragraph 39;
    • (iv) shall be identical to the corrected or amended sequence listing and be accompanied by a statement that "the information recorded in electronic form furnished under Rule 13ter   is identical to the corrected sequence listing" (or to the "amended sequence listing", as the case may be).

    Where such sequence listing in electronic form and, where applicable, such statement is not available to the competent authority, any such correction, rectification or amendment need only be taken into account by that authority for the purposes of the international search or preliminary examination to the extent that a meaningful search or preliminary examination can be carried out without such sequence listing in electronic form.

  PRESENTATION OF SEQUENCES

  • 5. Each sequence shall be assigned a separate sequence identifier. The sequence identifiers shall begin with 1 and increase sequentially by integers. If no sequence is present for a sequence identifier, the code 000 should appear under numeric identifier <400>, beginning on the next line following the SEQ ID NO. The response for numeric identifier <160> shall include the total number of SEQ ID NOs, whether followed by a sequence or by the code 000.
  • 6. In the description, claims or drawings of the application, the sequences represented in the sequence listing shall be referred to by the sequence identifier and preceded by "SEQ ID NO:".
  • 7. Nucleotide and amino acid sequences should be represented by at least one of the following three possibilities:
    • (i) a pure nucleotide sequence;
    • (ii) a pure amino acid sequence;
    • (iii) a nucleotide sequence together with its corresponding amino acid sequence.

    For those sequences disclosed in the format specified in option (iii), above, the amino acid sequence must be disclosed separately in the sequence listing as a pure amino acid sequence with a separate integer sequence identifier.

  Nucleotide Sequences

Symbols to Be Used

  • 8. A nucleotide sequence shall be presented only by a single strand, in the 5’-end to 3’-end direction from left to right. The terms 3’ and 5’ shall not be represented in the sequence.
  • 9. The bases of a nucleotide sequence shall be represented using the one-letter code for nucleotide sequence characters. Only lower case letters in conformity with the list given in Appendix 2, Table 1, shall be used.
  • 10. Modified bases shall be represented as the corresponding unmodified bases or as "n" in the sequence itself if the modified base is one of those listed in Appendix 2, Table 2, and the modification shall be further described in the feature section of the sequence listing, using the codes given in Appendix 2, Table 2. These codes may be used in the description or the feature section of the sequence listing but not in the sequence itself (see also paragraph 32). The symbol "n" is the equivalent of only one unknown or modified nucleotide.

Format to Be Used

  • 11. A nucleotide sequence shall be listed with a maximum of 60 bases per line, with a space between each group of 10 bases.
  • 12. The bases of a nucleotide sequence (including introns) shall be listed in groups of 10 bases, except in the coding parts of the sequence. Leftover bases, fewer than 10 in number at the end of non-coding parts of a sequence, should be grouped together and separated from adjacent groups by a space.
  • 13. The bases of the coding parts of a nucleotide sequence shall be listed as triplets (codons).
  • 14. The enumeration of the nucleotide shall start at the first base of the sequence with number 1. It shall be continuous through the whole sequence in the direction 5’ to 3’. It shall be marked in the right margin, next to the line containing the one-letter codes for the bases, and giving the number of the last base of that line. The enumeration method for nucleotide sequences set forth above remains applicable to nucleotide sequences that are circular in configuration, with the exception that the designation of the first nucleotide of the sequence may be made at the option of the applicant.
  • 15. A nucleotide sequence that is made up of one or more non-contiguous segments of a larger sequence or of segments from different sequences shall be numbered as a separate sequence, with a separate sequence identifier. A sequence with a gap or gaps shall be numbered as a plurality of separate sequences with separate sequence identifiers, with the number of separate sequences being equal in number to the number of continuous strings of sequence data.

  Amino Acid Sequences

Symbols to Be Used

  • 16. The amino acids in a protein or peptide sequence shall be listed in the amino to carboxy direction from left to right. The amino and carboxy groups shall not be represented in the sequence.
  • 17. The amino acids shall be represented using the three-letter code with the first letter as a capital and shall conform to the list given in Appendix 2, Table 3. An amino acid sequence that contains a blank or internal terminator symbols (for example, "Ter" or "*" or ".") may not be represented as a single amino acid sequence, but shall be presented as separate amino acid sequences (see paragraph 22).
  • 18. Modified and unusual amino acids shall be represented as the corresponding unmodified amino acids or as "Xaa" in the sequence itself if the modified amino acid is one of those listed in Appendix 2, Table 4, and the modification shall be further described in the feature section of the sequence listing, using the codes given in Appendix 2, Table 4. These codes may be used in the description or the feature section of the sequence listing but not in the sequence itself (see also paragraph 32). The symbol "Xaa" is the equivalent of only one unknown or modified amino acid.

Format to Be Used

  • 19. A protein or peptide sequence shall be listed with a maximum of 16 amino acids per line, with a space provided between each amino acid.
  • 20. Amino acids corresponding to the codons in the coding parts of a nucleotide sequence shall be placed immediately under the corresponding codons. Where a codon is split by an intron, the amino acid symbol should be given below the portion of the codon containing two nucleotides.
  • 21. The enumeration of amino acids shall start at the first amino acid of the sequence, with number 1. Optionally, the amino acids preceding the mature protein, for example pre-sequences, pro-sequences, pre-pro-sequences and signal sequences, when present, may have negative numbers, counting backwards starting with the amino acid next to number 1. Zero (0) is not used when the numbering of amino acids uses negative numbers to distinguish the mature protein. It shall be marked under the sequence every five amino acids. The enumeration method for amino acid sequences set forth above remains applicable for amino acid sequences that are circular in configuration, with the exception that the designation of the first amino acid of the sequence may be made at the option of the applicant.
  • 22. An amino acid sequence that is made up of one or more non-contiguous segments of a larger sequence or of segments from different sequences shall be numbered as a separate sequence, with a separate sequence identifier. A sequence with a gap or gaps shall be numbered as a plurality of separate sequences with separate sequence identifiers, with the number of separate sequences being equal in number to the number of continuous strings of sequence data.

  OTHER AVAILABLE INFORMATION IN THE SEQUENCE LISTING

  • 23. The order of the items of information in the sequence listings shall follow the order in which those items are listed in the list of numeric identifiers of data elements as defined in Appendix 1.
  • 24. Only numeric identifiers of data elements as defined in Appendix 1 shall be used for the presentation of the items of information in the sequence listing. The corresponding numeric identifier descriptions shall not be used. The provided information shall follow immediately after the numeric identifier while only those numeric identifiers for which information is given need appear on the sequence listing. Two exceptions to this requirement are numeric identifiers <220> and <300>, which serve as headers for "Feature" and "Publication Information," respectively, and are associated with information in numeric identifiers <221> to <223> and <301> to <313>, respectively. When feature and publication information is provided in the sequence listing under those numeric identifiers, numeric identifiers <220> and <300>, respectively, should be included, but left blank. Generally, a blank line shall be inserted between numeric identifiers when the digit in the first or second position of the numeric identifier changes. An exception to this general rule is that no blank line should appear preceding numeric identifier <310>. Additionally, a blank line shall precede any repeated numeric identifier.

Mandatory Data Elements

  • 25. The sequence listing shall include, in addition to and immediately preceding the actual nucleotide and/or amino acid sequence, the following items of information defined in Appendix 1 (mandatory data elements):
    <110>  Applicant name 
    <120>  Title of invention 
    <160>  Number of SEQ ID NOs 
    <210>  SEQ ID NO: x 
    <211>  Length 
    <212>  Type 
    <213>  Organism 
    <400>  Sequence 

    Where the name of the applicant (numeric identifier <110>) is written in characters other than those of the Latin alphabet, it shall also be indicated in characters of the Latin alphabet either as a mere transliteration or through translation into English.

    The data elements, except those under numeric identifiers <110>, <120> and <160>, shall be repeated for each sequence included in the sequence listing. Only the data elements under numeric identifiers <210> and <400> are mandatory if no sequence is present for a sequence identifier (see paragraph 5, above, and SEQ ID NO: 4 in the example depicted in Appendix 3 of this Standard).

  • 26. In addition to the data elements identified in paragraph 25, above, when a sequence listing is furnished at any time prior to the assignment of an application number, the following data element shall be included in the sequence listing:
    <130>  File reference 
  • 27. In addition to the data elements identified in paragraph 25, above, when a sequence listing is furnished at any time following the assignment of an application number, the following data elements shall be included in the sequence listing:
    <140>  Current patent application 
    <141>  Current filing date 
  • 28. In addition to the data elements identified in paragraph 25, above, when a sequence listing is filed relating to an application which claims the priority of an earlier application, the following data elements shall be included in the sequence listing:
    <150>  Earlier patent application 
    <151>  Earlier application filing date 
  • 29. If "n" or "Xaa" or a modified base or modified/unusual L-amino acid is used in the sequence, the following data elements are mandatory:
    <220>  Feature 
    <221>  Name/key 
    <222>  Location 
    <223>  Other information 
  • 30. If the organism (numeric identifier <213>) is "Artificial Sequence" or "Unknown," the following data elements are mandatory:
    <220>  Feature 
    <223>  Other information 

Optional Data Elements

  • 31. All data elements defined in Appendix 1, not mentioned in paragraphs 25 to 30, above, are optional (optional data elements).

Presentation of Features

  • 32. When features of sequences are presented (that is, numeric identifier <220>), they shall be described by the "feature keys" set out in Appendix 2, Tables 5 and 6.

Free Text

  • 33. "Free text" is a wording describing characteristics of the sequence under numeric identifier <223> (Other information) which does not use language-neutral vocabulary as referred to in paragraph 2(vii).
  • 34. The use of free text shall be limited to a few short terms indispensable for the understanding of the sequence. It shall not exceed four lines with a maximum of 65 characters per line for each given data element, when written in English. Any further information shall be included in the main part of the description in the language thereof.
  • 35. Any free text should preferably be in the English language.

  REPETITION OF FREE TEXT IN MAIN PART OF DESCRIPTION

  • 36. Where the sequence listing forming part of the international application contains free text, any such free text shall be repeated in the main part of the description in the language thereof. It is recommended that the free text in the language of the main part of the description be put in a specific section of the description called "Sequence Listing Free Text".

  SEQUENCE LISTINGS IN ELECTRONIC FORM

  • 37. Any sequence listing referred to in paragraph 3 contained in an international application filed in electronic form shall be in an electronic document format and be filed by a means of transmittal that has been specified by the receiving Office for the purposes of filing of international applications in electronic form, provided that any such sequence listing shall preferably be in the electronic document format specified in paragraph 40 and be filed, if possible, by a means of transmittal which has been specified by both the receiving Office and the competent authority.
  • 38. Any sequence listing in electronic form referred to in paragraph 3ter shall be in an electronic document format that has been specified by the receiving Office (in the case of a correction) or by the competent authority (in the case of a rectification or an amendment) for the purposes of filing of international applications in electronic form, provided that any such listing shall preferably be in the electronic document format specified in paragraph 40. Any such listing shall be filed by a means of transmittal which has been specified by the receiving Office or the competent authority, as applicable, for the purposes of this paragraph; if possible, it shall preferably be filed by a means of transmittal which has been specified by both the receiving Office and the competent authority.
  • 39. Any sequence listing in electronic form referred to in paragraphs 4 and 4bis furnished for the purposes of the international search or international preliminary examination shall be in the electronic document format specified in paragraph 40 and be filed by a means of transmittal which has been specified by the competent authority for the purposes of this paragraph.
  • 40. For the purposes of the international search and international preliminary examination, any sequence listing in electronic form shall be contained within one electronic file encoded using IBM Code Page 437, IBM Code Page 932 or a compatible code page to represent the sequence listing as set out in paragraphs 5 to 36 with no other codes included. A compatible code page, as would be required for, for example, Japanese, Chinese, Cyrillic, Arabic, Greek or Hebrew characters, is one that assigns the Roman alphabet and numerals to the same hexadecimal positions as do the specified code pages.
  • 41. Any sequence listing in the electronic document format specified in paragraph 40 shall preferably be created by dedicated software such as PatentIn.

  PROCEDURE BEFORE DESIGNATED AND ELECTED OFFICES

  • 42. For the purposes of the procedure before a designated or elected Office before which the processing of an international application which contains the disclosure of one or more nucleotide and/or amino acid sequences has started (see Rule 13ter.3 ):
    • (i) any reference to the receiving Office or the competent authority shall be construed as a reference to the designated or elected Office concerned;
    • (ii) any reference to a sequence listing which is included in the international application by way of a rectification under Rule 91  or an amendment under Article 34(2)(b)  of the description in relation to sequences contained in the application as filed shall be construed to also include any sequence listing included in the application, under the national law applied by the designated or elected Office concerned, by way of a rectification (of an obvious mistake) or amendment of the description in relation to sequences contained in the application as filed;
    • (iii) any reference to a sequence listing furnished for the purposes of international search or international preliminary examination shall be construed to also include any such listing furnished to the designated or elected Office concerned for the purposes of national search or examination by that Office;
    • (iv) the designated or elected Office concerned may invite the applicant to furnish to it, within a time limit which shall be reasonable under the circumstances, for the purposes of national search and/or examination, a sequence listing in electronic form complying with this Standard, unless such listing in electronic form is already available to that Office in a form and manner acceptable to it.

  Appendices

  • Appendix 1: Numeric Identifiers
  • Appendix 2: Nucleotide and Amino Acid Symbols and Feature Table
    • Table 1: List of Nucleotides
    • Table 2: List of Modified Nucleotides
    • Table 3: List of Amino Acids
    • Table 4: List of Modified and Unusual Amino Acids
    • Table 5: List of Feature Keys Related to Nucleotide Sequences
    • Table 6: List of Feature Keys Related to Protein Sequences
  • Appendix 3: Specimen Sequence Listing

[Appendices 1 to 3 to Annex C follow]

Annex C, Appendix 1 Numeric Identifiers

Only numeric identifiers as defined below may be used in sequence listings submitted in applications. The text of the data element headings given below shall not be included in the sequence listings.

Numeric identifiers of mandatory data elements, that is, data elements which must be included in all sequence listings (see paragraph 25 of this Standard: items 110, 120, 160, 210, 211, 212, 213 and 400) and numeric identifiers of data elements which must be included in circumstances specified in this Standard (see paragraphs 26, 27, 28, 29 and 30 of this Standard: items 130, 140, 141, 150 and 151, and 220 to 223) are marked by the symbol "M."

Numeric identifiers of optional data elements (see paragraph 31 of this Standard) are marked by the symbol "O."

Numeric Identifier Numeric Identifier Description Mandatory (M) or Optional (O) Comment
<110>  Applicant name  where the name of the applicant is written in characters other than those of the Latin alphabet, the same shall also be indicated in characters of the Latin alphabet either as a mere transliteration or through translation into English 
<120>  Title of Invention   
<130>  File reference  M, in the circumstances specified in paragraph 26 of this Standard  see paragraph 26 of this Standard 
<140>  Current patent application  M, in the circumstances specified in paragraph 27 of this Standard  see paragraph 27 of this Standard; the current patent application shall be identified, in the following order, by the two-letter code indicated in accordance with WIPO Standard ST.3 and the application number (in the format used by the industrial property Office with which the current patent application is filed) or, for an international application, by the international application number 
<141>  Current filing date  M, in the circumstances specified in paragraph 27 of this Standard  see paragraph 27 of this Standard; the date shall be indicated in accordance with WIPO Standard ST.2 (CCYY MM DD) 
<150>  Earlier patent application  M, in the circumstances specified in paragraph 28 of this Standard  see paragraph 28 of this Standard; the earlier patent application shall be identified, in the following order, by the two-letter code indicated in accordance with WIPO Standard ST.3 and the application number (in the format used by the industrial property Office with which the earlier patent application was filed) or, for an international application, by the international application number 
<151>  Earlier application filing date  M, in the circumstances specified in paragraph 28 of this Standard  see paragraph 28 of this Standard; the date shall be indicated in accordance with WIPO Standard ST.2 (CCYY MM DD) 
<160>  Number of SEQ ID NOs   
<170>  Software   
<210>  Information for SEQ ID NO: x  response shall be an integer representing the SEQ ID NO shown 
<211>  Length  sequence length expressed in number of base pairs or amino acids 
<212>  Type  type of molecule sequenced in SEQ ID NO: x, either DNA, RNA or PRT; if a nucleotide sequence contains both DNA and RNA fragments, the value shall be "DNA"; in addition, the combined DNA/RNA molecule shall be further described in the <220> to <223> feature section 
<213>  Organism  Genus Species (that is, scientific name) or "Artificial Sequence" or "Unknown" 
<220>  Feature  M, in the circumstances specified in paragraph 29 and 30 of this Standard  leave blank; see paragraphs 29 and 30 of this Standard; description of points of biological significance in the sequence in SEQ ID NO: x) (may be repeated depending on the number of features indicated) 
<221>  Name/key  M in the circumstances specified in paragraph 29 of this Standard  see paragraph 29 of this Standard; only those keys as described in Table 5 or 6 of Appendix 2 shall be used 
<222>  Location  M, in the circumstances specified in paragraph 29 of this Standard  see paragraph 29 of this Standard; - from (number of first base/amino acid in the feature) - to (number of last base/amino acid in the feature) - base pairs (numbers refer to positions of base pairs in a nucleotide sequence) - amino acids (numbers refer to positions of amino acid residues in an amino acid sequence) - whether feature is located on the complementary strand to that filed in the sequence listing 
<223>  Other information:  M, in the circumstances specified in paragraphs 29 and 30 of this Standard  see paragraphs 29 and 30 of this Standard; any other relevant information, using language neutral vocabulary, or free text (preferably in English); any free text is to be repeated in the main part of the description in the language thereof (see paragraph 36 of this Standard); where any modified base or modified/unusual L-amino acid appearing in Appendix 2, Tables 2 and 4, is in the sequence, the symbol associated with that base or amino acid from Appendix 2, Tables 2 and 4, should be used 
<300>  Publication information  leave blank; repeat section for each relevant publication 
<301>  Authors   
<302>  Title  title of publication 
<303>  Journal  journal name in which data published 
<304>  Volume  journal volume in which data published 
<305>  Issue  journal issue number in which data published 
<306>  Pages  journal page numbers on which data published 
<307>  Date  journal date on which data published; if possible, the date shall be indicated in accordance with WIPO Standard ST.2 (CCYY MM DD) 
<308>  Database accession number  accession number assigned by database including database name 
<309>  Database entry date  date of entry in database; the date shall be indicated in accordance with WIPO Standard ST.2 (CCYY MM DD) 
<310>  Document number  document number, for patent type citations only; the full document shall specify, in the following order, the two-letter code indicated in accordance with WIPO Standard ST.3, the publication number indicated in accordance with WIPO Standard ST.6, and the kind-of-document code indicated in accordance with WIPO Standard ST.16 
<311>  Filing date  document filing date, for patent-type citations only; the date shall be indicated in accordance with WIPO Standard ST.2 (CCYY MM DD) 
<312>  Publication date  document publication date; for patent-type citations only; the date shall be indicated in accordance with WIPO Standard ST.2 (CCYY MM DD) 
<313>  Relevant residues in SEQ ID NO: x: from to   
<400>  Sequence  SEQ ID NO: x should follow the numeric identifier and should appear on the line preceding the sequence (see Appendix 3) 

Annex C, Appendix 2 Nucleotide and Amino Acid Symbols and Feature Table

Symbol Meaning Origin of designation
adenine 
guanine 
cytosine 
thymine 
uracil 
g or a  purine 
t/u or c  pyrimidine 
a or c  amino 
g or t/u  keto 
g or c  strong interactions 3H-bonds 
a or t/u  weak interactions 2H-bonds 
g or c or t/u  not a 
a or g or t/u  not c 
a or c or t/u  not g 
a or g or c  not t, not u 
a or g or c or t/u, unknown, or other  an
Symbol Meaning
ac4c  4-acetylcytidine 
chm5u  5-(carboxyhydroxymethyl)uridine 
cm  2'-O-methylcytidine 
cmnm5s2u  5-carboxymethylaminomethyl-2-thiouridine 
cmnm5u  5-carboxymethylaminomethyluridine 
dihydrouridine 
fm  2'-O-methylpseudouridine 
gal q  beta, D-galactosylqueuosine 
gm  2'-O-methylguanosine 
inosine 
i6a  N6-isopentenyladenosine 
m1a  1-methyladenosine 
m1f  1-methylpseudouridine 
m1g  1-methylguanosine 
m1i  1-methylinosine 
m22g  2,2-dimethylguanosine 
m2a  2-methyladenosine 
m2g  2-methylguanosine 
m3c  3-methylcytidine 
m5c  5-methylcytidine 
m6a  N6-methyladenosine 
m7g  7-methylguanosine 
mam5u  5-methylaminomethyluridine 
mam5s2u  5-methoxyaminomethyl-2-thiouridine 
man q  beta, D-mannosylqueuosine 
mcm5s2u  5-methoxycarbonylmethyl-2-thiouridine 
mcm5u  5-methoxycarbonylmethyluridine 
mo5u  5-methoxyuridine 
ms2i6a  2-methylthio-N6-isopentenyladenosine 
ms2t6a  N-((9-beta-D-ribofuranosyl-2-methylthiopurine-6-yl)carbamoyl)threonine 
mt6a  N-((9-beta-D-ribofuranosylpurine-6-yl)N-methylcarbamoyl)threonine 
mv  uridine-5-oxyacetic acid-methylester 
o5u  uridine-5-oxyacetic acid 
osyw  wybutoxosine 
pseudouridine 
queuosine 
s2c  2-thiocytidine 
s2t  5-methyl-2-thiouridine 
s2u  2-thiouridine 
s4u  4-thiouridine 
5-methyluridine 
t6a  N-((9-beta-D-ribofuranosylpurine-6-yl)-carbamoyl)threonine 
tm  2'-O-methyl-5-methyluridine 
um  2'-O-methyluridine 
yw  wybutosine 
3-(3-amino-3-carboxy-propyl)uridine, (acp3)u 
Symbol Meaning
Ala  Alanine 
Cys  Cysteine 
Asp  Aspartic Acid 
Glu  Glutamic Acid 
Phe  Phenylalanine 
Gly  Glycine 
His  Histidine 
Ile  Isoleucine 
Lys  Lysine 
Leu  Leucine 
Met  Methionine 
Asn  Asparagine 
Pro  Proline 
Gln  Glutamine 
Arg  Arginine 
Ser  Serine 
Thr  Threonine 
Val  Valine 
Trp  Tryptophan 
Tyr  Tyrosine 
Asx  Asp or Asn 
Glx  Glu or Gln 
Xaa  unknown or other 
Symbol Meaning
Aad  2-Aminoadipic acid 
bAad  3-Aminoadipic acid 
bAla  beta-Alanine, beta-Aminopropionic acid 
Abu  2-Aminobutyric acid 
4Abu  4-Aminobutyric acid, piperidinic acid 
Acp  6-Aminocaproic acid 
Ahe  2-Aminoheptanoic acid 
Aib  2-Aminoisobutyric acid 
bAib  3-Aminoisobutyric acid 
Apm  2-Aminopimelic acid 
Dbu  2,4 Diaminobutyric acid 
Des  Desmosine 
Dpm  2,2'-Diaminopimelic acid 
Dpr  2,3-Diaminopropionic acid 
EtGly  N-Ethylglycine 
EtAsn  N-Ethylasparagine 
Hyl  Hydroxylysine 
aHyl  allo-Hydroxylysine 
3Hyp  3-Hydroxyproline 
4Hyp  4-Hydroxyproline 
Ide  Isodesmosine 
aIle  allo-Isoleucine 
MeGly  N-Methylglycine, sarcosine 
MeIle  N-Methylisoleucine 
MeLys  6-N-Methyllysine 
MeVal  N-Methylvaline 
Nva  Norvaline 
Nle  Norleucine 
Orn  Ornithine 
Key Description
allele  a related individual or strain contains stable, alternative forms of the same gene which differs from the presented sequence at this location (and perhaps others) 
attenuator  (1) region of DNA at which regulation of termination of transcription occurs, which controls the expression of some bacterial operons; (2) sequence segment located between the promoter and the first structural gene that causes partial termination of transcription 
C_region  constant region of immunoglobulin light and heavy chains, and T-cell receptor alpha, beta, and gamma chains; includes one or more exons depending on the particular chain 
CAAT_signal  CAAT box; part of a conserved sequence located about 75 bp up-stream of the start point of eukaryotic transcription units which may be involved in RNA polymerase binding; consensus=GG (C or T) CAATCT 
CDS  coding sequence; sequence of nucleotides that corresponds with the sequence of amino acids in a protein (location includes stop codon); feature includes amino acid conceptual translation 
conflict  independent determinations of the "same" sequence differ at this site or region 
D-loop  displacement loop; a region within mitochondrial DNA in which a short stretch of RNA is paired with one strand of DNA, displacing the original partner DNA strand in this region; also used to describe the displacement of a region of one strand of duplex DNA by a single stranded invader in the reaction catalyzed by RecA protein 
D-segment  diversity segment of immunoglobulin heavy chain, and T-cell receptor beta chain 
enhancer  a cis-acting sequence that increases the utilization of (some) eukaryotic promoters, and can function in either orientation and in any location (upstream or downstream) relative to the promoter 
exon  region of genome that codes for portion of spliced mRNA; may contain 5'UTR all CDSs, and 3'UTR 
GC_signal  GC box; a conserved GC-rich region located upstream of the start point of eukaryotic transcription units which may occur in multiple copies or in either orientation; consensus=GGGCGG 
gene  region of biological interest identified as a gene and for which a name has been assigned 
iDNA  intervening DNA; DNA which is eliminated through any of several kinds of recombination 
intron  a segment of DNA that is transcribed, but removed from within the transcript by splicing together the sequences (exons) on either side of it 
J_segment  joining segment of immunoglobulin light and heavy chains, and T-cell receptor alpha, beta, and gamma chains 
LTR  long terminal repeat, a sequence directly repeated at both ends of a defined sequence, of the sort typically found in retroviruses 
mat_peptide  mature peptide or protein coding sequence; coding sequence for the mature or final peptide or protein product following post-translational modification; the location does not include the stop codon (unlike the corresponding CDS) 
misc_binding  site in nucleic acid which covalently or non-covalently binds another moiety that cannot be described by any other Binding key (primer_bind or protein_bind) 
misc_difference  feature sequence is different from that presented in the entry and cannot be described by any other Difference key (conflict, unsure, old_sequence, mutation, variation, allele, or modified_base) 
misc_feature  region of biological interest which cannot be described by any other feature key; a new or rare feature 
misc_recomb  site of any generalized, site-specific or replicative recombination event where there is a breakage and reunion of duplex DNA that cannot be described by other recombination keys (iDNA and virion) or qualifiers of source key (/insertion_seq, /transposon, /proviral) 
misc_RNA  any transcript or RNA product that cannot be defined by other RNA keys (prim_transcript, precursor_RNA, mRNA, 5'clip, 3'clip, 5'UTR, 3'UTR, exon, CDS, sig_peptide, transit_peptide, mat_peptide, intron, polyA_site, rRNA, tRNA, scRNA, and snRNA) 
misc_signal  any region containing a signal controlling or altering gene function or expression that cannot be described by other Signal keys (promoter, CAAT_signal, TATA_signal, -35_signal, -10_signal, GC_signal, RBS, polyA_signal, enhancer, attenuator, terminator, and rep_origin) 
misc_structure  any secondary or tertiary structure or conformation that cannot be described by other Structure keys (stem_loop and D-loop) 
modified_base  the indicated nucleotide is a modified nucleotide and should be substituted for by the indicated molecule (given in the mod_base qualifier value) 
mRNA  messenger RNA; includes 5' untranslated region (5'UTR), coding sequences (CDS, exon) and 3' untranslated region (3'UTR) 
mutation  a related strain has an abrupt, inheritable change in the sequence at this location 
N_region  extra nucleotides inserted between rearranged immunoglobulin segments 
old_sequence  the presented sequence revises a previous version of the sequence at this location 
polyA_signal  recognition region necessary for endonuclease cleavage of an RNA transcript that is followed by polyadenylation; consensus=AATAAA 
polyA_site  site on an RNA transcript to which will be added adenine residues by post-transcriptional polyadenylation 
precursor_RNA  any RNA species that is not yet the mature RNA product; may include 5' clipped region (5'clip), 5' untranslated region (5'UTR), coding sequences (CDS, exon), intervening sequences (intron), 3' untranslated region (3'UTR), and 3' clipped region (3'clip) 
prim_transcript  primary (initial, unprocessed) transcript; includes 5' clipped region (5'clip), 5' untranslated region (5'UTR), coding sequences (CDS, exon), intervening sequences (intron), 3' untranslated region (3'UTR), and 3' clipped region (3' clip) 
primer_bind  non-covalent primer binding site for initiation of replication, transcription, or reverse transcription; includes site(s) for synthetic, for example, PCR primer elements 
promoter  region on a DNA molecule involved in RNA polymerase binding to initiate transcription 
protein_bind  non-covalent protein binding site on nucleic acid 
RBS  ribosome binding site 
repeat_region  region of genome containing repeating units 
repeat_unit  single repeat element 
rep_origin  origin of replication; starting site for duplication of nucleic acid to give two identical copies 
rRNA  mature ribosomal RNA; the RNA component of the ribonucleoprotein particle (ribosome) which assembles amino acids into proteins 
S_region  switch region of immunoglobulin heavy chains; involved in the rearrangement of heavy chain DNA leading to the expression of a different immunoglobulin class from the same B-cell 
satellite  many tandem repeats (identical or related) of a short basic repeating unit; many have a base composition or other property different from the genome average that allows them to be separated from the bulk (main band) genomic DNA 
scRNA  small cytoplasmic RNA; any one of several small cytoplasmic RNA molecules present in the cytoplasm and (sometimes) nucleus of a eukaryote 
sig_peptide  signal peptide coding sequence; coding sequence for an N-terminal domain of a secreted protein; this domain is involved in attaching nascent polypeptide to the membrane; leader sequence 
snRNA  small nuclear RNA; any one of many small RNA species confined to the nucleus; several of the snRNAs are involved in splicing or other RNA processing reactions 
source  identifies the biological source of the specified span of the sequence; this key is mandatory; every entry will have, as a minimum, a single source key spanning the entire sequence; more than one source key per sequence is permissable 
stem_loop  hairpin; a double-helical region formed by base-pairing between adjacent (inverted) complementary sequences in a single strand of RNA or DNA 
STS  Sequence Tagged Site; short, single-copy DNA sequence that characterizes a mapping landmark on the genome and can be detected by PCR; a region of the genome can be mapped by determining the order of a series of STSs 
TATA_signal  TATA box; Goldberg-Hogness box; a conserved AT-rich septamer found about 25 bp before the start point of each eukaryotic RNA polymerase II transcript unit which may be involved in positioning the enzyme for correct initiation; consensus=TATA(A or T)A(A or T) 
terminator  sequence of DNA located either at the end of the transcript or adjacent to a promoter region that causes RNA polymerase to terminate transcription; may also be site of binding of repressor protein 
transit_peptide  transit peptide coding sequence; coding sequence for an N-terminal domain of a nuclear-encoded organellar protein; this domain is involved in post-translational import of the protein into the organelle 
tRNA  mature transfer RNA, a small RNA molecule (75-85 bases long) that mediates the translation of a nucleic acid sequence into an amino acid sequence 
unsure  author is unsure of exact sequence in this region 
V_region  variable region of immunoglobulin light and heavy chains, and T-cell receptor alpha, beta, and gamma chains; codes for the variable amino terminal portion; can be made up from V_segments, D_segments, N_regions, and J_segments 
V_segment  variable segment of immunoglobulin light and heavy chains, and T-cell receptor alpha, beta, and gamma chains; codes for most of the variable region (V_region) and the last few amino acids of the leader peptide 
variation  a related strain contains stable mutations from the same gene (for example, RFLPs, polymorphisms, etc.) which differ from the presented sequence at this location (and possibly others) 
3'clip  3'-most region of a precursor transcript that is clipped off during processing 
3'UTR  region at the 3′ end of a mature transcript (following the stop codon) that is not translated into a protein 
5'clip  5'-most region of a precursor transcript that is clipped off during processing 
5'UTR  region at the 5' end of a mature transcript (preceding the initiation codon) that is not translated into a protein 
-10_signal  pribnow box; a conserved region about 10 bp upstream of the start point of bacterial transcription units which may be involved in binding RNA polymerase; consensus=TAtAaT 
-35_signal  a conserved hexamer about 35 bp upstream of the start point of bacterial transcription units; consensus=TTGACa [ ] or TGTTGACA [ ] 
Key Description
CONFLICT  different papers report differing sequences 
VARIANT  authors report that sequence variants exist 
VARSPLIC  description of sequence variants produced by alternative splicing 
MUTAGEN  site which has been experimentally altered 
MOD_RES  post-translational modification of a residue 
  ACETYLATION  N-terminal or other 
  AMIDATION  generally at the C-terminal of a mature active peptide 
  BLOCKED  undetermined N- or C-terminal blocking group 
  FORMYLATION  of the N-terminal methionine 
  GAMMA-CARBOXYGLUTAMIC ACID HYDROXYLATION  of asparagine, aspartic acid, proline or lysine 
  METHYLATION  generally of lysine or arginine 
  PHOSPHORYLATION  of serine, threonine, tyrosine, aspartic acid or histidine 
  PYRROLIDONE CARBOXYLIC ACID  N-terminal glutamate which has formed an internal cyclic lactam 
  SULFATATION  generally of tyrosine 
LIPID  covalent binding of a lipidic moiety 
  MYRISTATE  myristate group attached through an amide bond to the N-terminal glycine residue of the mature form of a protein or to an internal lysine residue 
  PALMITATE  palmitate group attached through a thioether bond to a cysteine residue or through an ester bond to a serine or threonine residue 
  FARNESYL  farnesyl group attached through a thioether bond to a cysteine residue 
  GERANYL-GERANYL  geranyl-geranyl group attached through a thioether bond to a cysteine residue 
  GPI-ANCHOR  glycosyl-phosphatidylinositol (GPI) group linked to the alpha-carboxyl group of the C-terminal residue of the mature form of a protein 
  N-ACYL DIGLYCERIDE  N-terminal cysteine of the mature form of a prokaryotic lipoprotein with an amide-linked fatty acid and a glyceryl group to which two fatty acids are linked by ester linkages 
DISULFID  disulfide bond; the ‘FROM’ and ‘TO’ endpoints represent the two residues which are linked by an intra-chain disulfide bond; if the ‘FROM’ and ‘TO’ endpoints are identical, the disulfide bond is an interchain one and the description field indicates the nature of the cross-link 
THIOLEST  thiolester bond; the ‘FROM’ and ‘TO’ endpoints represent the two residues which are linked by the thiolester bond 
THIOETH  thioether bond; the ‘FROM’ and ‘TO’endpoints represent the two residues which are linked by the thioether bond 
CARBOHYD  glycosylation site; the nature of the carbohydrate (if known) is given in the description field 
METAL  binding site for a metal ion; the description field indicates the nature of the metal 
BINDING  binding site for any chemical group (co-enzyme, prosthetic group, etc.); the chemical nature of the group is given in the description field 
SIGNAL  extent of a signal sequence (prepeptide) 
TRANSIT  extent of a transit peptide (mitochondrial, chloroplastic, or for a microbody) 
PROPEP  extent of a propeptide 
CHAIN  extent of a polypeptide chain in the mature protein 
PEPTIDE  extent of a released active peptide 
DOMAIN  extent of a domain of interest on the sequence; the nature of that domain is given in the description field 
CA_BIND  extent of a calcium-binding region 
DNA_BIND  extent of a DNA-binding region 
NP_BIND  extent of a nucleotide phosphate binding region; the nature of the nucleotide phosphate is indicated in the description field 
TRANSMEM  extent of a transmembrane region 
ZN_FING  extent of a zinc finger region 
SIMILAR  extent of a similarity with another protein sequence; precise information, relative to that sequence is given in the description field 
REPEAT  extent of an internal sequence repetition 
HELIX  secondary structure: Helices, for example, Alpha-helix, 3(10) helix, or Pi-helix 
STRAND  secondary structure: Beta-strand, for example, Hydrogen bonded beta-strand, or Residue in an isolated beta-bridge 
TURN  secondary structure Turns, for example, H-bonded turn (3-turn, 4-turn or 5-turn) 
ACT_SITE  amino acid(s) involved in the activity of an enzyme 
SITE  any other interesting site on the sequence 
INIT_MET  the sequence is known to start with an initiator methionine 
NON_TER  the residue at an extremity of the sequence is not the terminal residue; if applied to position 1, this signifies that the first position is not the N-terminus of the complete molecule; if applied to the last position, it signifies that this position is not the C-terminus of the complete molecule; there is no description field for this key 
NON_CONS  non consecutive residues; indicates that two residues in a sequence are not consecutive and that there are a number of unsequenced residues between them 
UNSURE  uncertainties in the sequence; used to describe region(s) of a sequence for which the authors are unsure about the sequence assignment 

[Annex C, Appendix 3, follows]

Annex C, Appendix 3 Specimen Sequence Listing

Sample Sequence Listing [Page 1 of 2]
Sample Sequence Listing [Page 2 of 2]

[Annex D follows]