Amino Acid Mass Reference

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Name 3-letter code 1-letter code Monoisotopic Mass Average Mass Composition
Alanine Ala A 71.03711 71.08 C3H5NO
Arginine Arg R 156.10111 156.2 C6H12N4O
Asparagine Asn N 114.04293 114.1 C4H6N2O2
Aspartic Acid Asp D 115.02694 115.1 C4H5NO3
Cysteine Cys C 103.00919 103.1 C3H5NOS
Glutamic Acid Glu E 129.04259 129.1 C5H7NO3
Glutamine Gln Q 128.05858 128.1 C5H8N2O2
Glycine Gly G 57.02146 57.05 C2H3NO
Histidine His H 137.05891 137.1 C6H7N3O
Isoleucine Ile I 113.08406 113.2 C6H11NO
Leucine Leu L 113.08406 113.2 C6H11NO
Lysine Lys K 128.09496 128.2 C6H12N2O
Methionine Met M 131.04049 131.2 C5H9NOS
Phenylalanine Phe F 147.06841 147.2 C9H9NO
Proline Pro P 97.05276 97.12 C5H7NO
Serine Ser S 87.03203 87.08 C3H5NO2
Threonine Thr T 101.04768 101.1 C4H7NO2
Tryptophan Trp W 186.07931 186.2 C11H10N2O
Tyrosine Tyr Y 163.06333 163.2 C9H9NO2
Valine Val V 99.06841 99.13 C5H9NO

Sort by Mass

Name 3-letter code 1-letter code Monoisotopic Mass Average Mass Composition
Glycine Gly G 57.02146 57.05 C2H3NO
Alanine Ala A 71.03711 71.08 C3H5NO
Serine Ser S 87.03203 87.08 C3H5NO2
Proline Pro P 97.05276 97.12 C5H7NO
Valine Val V 99.06841 99.13 C5H9NO
Threonine Thr T 101.04768 101.1 C4H7NO2
Cysteine Cys C 103.00919 103.1 C3H5NOS
Isoleucine Ile I 113.08406 113.2 C6H11NO
Leucine Leu L 113.08406 113.2 C6H11NO
Asparagine Asn N 114.04293 114.1 C4H6N2O2
Aspartic Acid Asp D 115.02694 115.1 C4H5NO3
Glutamine Gln Q 128.05858 128.1 C5H8N2O2
Lysine Lys K 128.09496 128.2 C6H12N2O
Glutamic Acid Glu E 129.04259 129.1 C5H7NO3
Methionine Met M 131.04049 131.2 C5H9NOS
Histidine His H 137.05891 137.1 C6H7N3O
Phenylalanine Phe F 147.06841 147.2 C9H9NO
Arginine Arg R 156.10111 156.2 C6H12N4O
Tyrosine Tyr Y 163.06333 163.2 C9H9NO2
Tryptophan Trp W 186.07931 186.2 C11H10N2O

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