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Next: Amino Acid to Integer Up: Amino Acids Previous: Three Letter Amino Acid

One Letter Amino Acid to Integer

Calling Sequence:
aa : single letter amino acid abbreviations

Returns: 0..21

Synopsis: This function converts a one letter abbreviation for an amino acid to an posint between 1..20 according to the standard ordering of amino acids (see beginning of this section). If aa is not a amino acid abbreviation, the value 0 is returned. If aa is the unknown amino acid X, then the value 21 is returned. Examples:

> AToInt('V');
> AToInt('X');

Gaston Gonnet