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AToInt

Function AToInt - convert a 1 letter amino acid code to an integer

Calling Sequence  AToInt(aa)
Parameters
NameTypeDescription

aa stringsingle letter amino acid abbreviations
Return Type  0..21
Synopsis This function converts a one letter abbreviation for an amino acid to a posint between 1..20 according to the standard ordering of amino acids (see ?aminoacids). 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');
20
> AToInt(X);
21
See also AAAToInt,   aminoacids,   AminoToInt,   AToCInt,   AToCodon,   BaseToInt,   BBBToInt,   BToInt,   CIntToA,   CIntToAAA,   CIntToAmino,   CIntToCodon,   CIntToInt,   CodonCode,   CodonToA,   CodonToCInt,   CodonToInt,   CodonToInt,   GeneticCode,   IntToA,   IntToAAA,   IntToAmino,   IntToB,   IntToBase,   IntToBBB,   IntToCInt,   IntToCodon