How are residues represented in sequence enumerations according to WIPO Standard ST.26?

WIPO Standard ST.26 specifies two ways to represent residues in sequence enumerations:

1. Individual representation: Each residue is represented by a name, abbreviation, symbol, or structure. For example, “HHHHHHQ” or “HisHisHisHisHisHisGln”.
2. Shorthand formula: Multiple residues are represented by a condensed notation. For example, “His6Gln”.

As stated in MPEP 2412.02(a):

“WIPO Standard ST.26 specifies that ‘enumeration of its residues’ means ‘disclosure of a sequence in a patent application by listing, in order, each residue of the sequence, wherein [either] (I) the residue is represented by a name, abbreviation, symbol, or structure (e.g., HHHHHHQ or HisHisHisHisHisHisGln); or (ii) multiple residues are represented by a shorthand formula (e.g., His6Gln)'”

To learn more:

• WIPO Standard ST.26
• residue representation
• sequence enumeration
• amino acid notation
• nucleotide notation