The basic alphabet that describes symbols used in sequences of amino acids that come from codon encodings of RNA. This alphabet allows for the twenty amino acids as well as a termination and gap symbol.

The character representations come from the NCBIstdaa standard and are used in many sequence file formats. The NCBIstdaa standard has all the same characters as NCBIeaa and IUPACaa, but adds Selenocysteine, termination, and gap symbols to the latter.

The entries in this dictionary are: Symbol - Extended Symbol - Name A - Ala - Alanine C - Cys - Cysteine D - Asp - Aspartic Acid E - Glu - Glutamic Acid F - Phe - Phenylalanine G - Gly - Glycine H - His - Histidine I - Ile - Isoleucine K - Lys - Lysine L - Leu - Leucine M - Met - Methionine N - Asn - Asparagine O - Pyl - Pyrrolysine P - Pro - Proline Q - Gln - Glutamine R - Arg - Arginine S - Ser - Serine T - Thr - Threoine U - Sel - Selenocysteine V - Val - Valine W - Trp - Tryptophan Y - Tyr - Tyrosine * - Ter - Termination - - --- - Gap.

public class ProteinAlphabet : IAlphabet, 
	IEnumerable<byte>, IEnumerable

Public Class ProteinAlphabet
	Implements IAlphabet, IEnumerable(Of Byte), 
	IEnumerable

public ref class ProteinAlphabet : IAlphabet, 
	IEnumerable<unsigned char>, IEnumerable

type ProteinAlphabet =  
    class
        interface IAlphabet
        interface IEnumerable<byte>
        interface IEnumerable
    end