What amino acids are considered “specifically defined” according to WIPO Standard ST.26?
MPEP 2412.03(a) refers to WIPO Standard ST.26, which defines “specifically defined” amino acids as any amino acid other than those represented by the symbol “X”. The MPEP provides a table of amino acid symbols, where: Single-letter symbols A, R, N, D, C, Q, E, G, H, I, L, K, M, F, P, O, S, U,…
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