Alanine ala a CH3-CH(NH2)-COOH

　Arginine arg r HN=C(NH2)-NH-(CH2)3-CH(NH2)-COOH

　Asparagine asn n H2N-CO-CH2-CH(NH2)-COOH

　Aspartic acid asp d HOOC-CH2-CH(NH2)-COOH

　Cysteine cys c HS-CH2-CH(NH2)-COOH

　Glutamine gln q H2N-CO-(CH2)2-CH(NH2)-COOH

　Glutamic acid glu e HOOC-(CH2)2-CH(NH2)-COOH

　Glycine gly g NH2-CH2-COOH

　Histidine his h NH-CH=N-CH=C-CH2-CH(NH2)-COOH

　|__________|

　Isoleucine ile i CH3-CH2-CH(CH3)-CH(NH2)-COOH

　Leucine leu l (CH3)2-CH-CH2-CH(NH2)-COOH

　Lysine lys k H2N-(CH2)4-CH(NH2)-COOH

　Methionine met m CH3-S-(CH2)2-CH(NH2)-COOH

　Phenylalanine phe f Ph-CH2-CH(NH2)-COOH

　Proline pro p NH-(CH2)3-CH-COOH

　|_________|

　Serine ser s HO-CH2-CH(NH2)-COOH

　Threonine thr t CH3-CH(OH)-CH(NH2)-COOH

　Tryptophan trp w Ph-NH-CH=C-CH2-CH(NH2)-COOH

　|_______|

　Tyrosine tyr y HO-p-Ph-CH2-CH(NH2)-COOH

　Valine val v (CH3)2-CH-CH(NH2)-COOH

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