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Amino Acids

Amino Acids are molecules composed of amino groups, a side chain residue and a carboxylic group, the exception is the amino acid glycine. 


Amino acid side chains vary between amino acids. The natrural amino acid units make up a peptide or protein molecule when joiined together in a precise sequence when made on a ribosome. 

SYMBOL AMINO ACID STRUCTURE FORMULA MOL WT MW-H2O
βAla β-Alanine C3H7NO2 89.09 71.07
Ala, A Alanine C3H7NO2 89.09 71.07
Aad Aminoadipic acid C6H11NO4 161.16 143.14
Abu 2-Aminobutyric acid C4H9NO2 103.12 85.10
4-Abz 4-Aminobenzoic acid C7H7NO2 137.14 119.10
γAbu 4-Aminobutyric acid C4H9NO2 103.12 85.10
ЄAhx 6-Aminocaproic acid C6H13NO2 131.17 113.15
Aib α-Aminoisobutyric acid C4H9NO2 103.12 85.10
Ach 1-aminocyclohexane-1-carboxylic acid C7H13NO2 143.18 125.16
Acpe 1-aminocycropentane-1-carboxylic acid C6H11NO2 129.16 111.14
Acpe 1-aminocycropentane-1-carboxylic acid C6H11NO2 129.16 111.14
Acpp 1-aminocycropropane-1-carboxylic acid C4H7NO2 101.10 83.08
Phe(4-NH2) 4-Aminophenylalanine C9H12N2O2 180.20 162.18
Asu α-Aminosuberic acid C8H15NO4 189.21 171.19
Arg, R Arginine C6H12N4O2 174.20 156.18
Asn, N  Asparagine C4H8N2O3 132.12 114.10
Asp, D Aspartic Acid C4H7NO4 133.10 115.08
Bpa 4-Benzoylphenylalanine C16H15NO3 269.30 251.28
Bip 4,4’-Biphenylalanine C15H15NO2 241.29 233.27
tBuAla β-t-Butylalanine C7H15NO2 145.20 127.18
Tle 2-t-Butylglycine C6H13NO2 131.17 113.15
Phe(pCl) 4-Chlorophenylalanine C9H10CINO2 199.63 181.63
Cit Citrulline C6H13N3O3 175.19 157.17
Cha β-Cycrohexylalanine C9H17NO2 171.24 153.22
Chg α-Cycrohexylglycine C8H15NO2 157.21 139.19
Cpa β-Cycropentylalanine C8H15NO2 157.21 139.19
Cpg Cyclopentylglycine C7H13NO2 143.18 125.16
Cpr β-Cycropropylalanine C6H11NO2 129.16 111.14
Cys, C Cysteine C3H7NO2S 121.16 103.14
Δ-Pro 3,4-Dehydroproline C5H7NO2 113.11 95.09
Dab α,r-Diaminobutyric acid C4H10N2O2 118.13 100.11
Dap α, β-Diaminopropionic acid C3H8N2O2 104.11 86.09
Deg Diethylglycine C6H13NO2 131.17 113.15
Dmt 2’,6’-Dimethyltyrosine C11H15NO3 209.24 191.22
Tyr(3,5-di-l) 3,5-Diiodotyrosine C9H9I2NO3 432.98 414.96
Dpa 3,3-Diphenylalanine C15H15I2NO3 432.98 223.27
Phe(4-Fl) 3,3-Diphenylalanine C9H10FNO3 183.18 223.27
Glu, E Glutamic acid C5H9NO4 147.13 129.11
Gln, Q Glutamine C5H10N2O3 146.14 128.12
Gly, G Glycine C2H5NO2 75.07 57.05
His, H Histidine C6H9N3O2 155.15 137.13
Hci Homocitrulline C7H15N3O3 189.21 171.19
Hcy Homocysteine C4H9NO2S 135.19 117.17
Hle Homoleucine C7H15NO2 145.20 127.18
Hph Homophenylalanine C10H13NO2 179.22 161.20
Hpr Homoproline C6H11NO2 129.16 111.14
hSer Hmoserine C4H9NO3 119.12 101.10
Hyp Hydroxyprorine C5H9NO3 131.13 113.11
Trp(5-OH) 5-Hydroxytryptophan C11H12N2O3 220.22 202.20
Igl Indanylglycine C11H13NO2 191.23 173.21
allo-Ile Allo-Isoleucine C6H13NO2 131.17 113.15
Ile, I Isoleucine C6H13NO2 131.17 113.15
Leu, L Leucine C6H13NO2 131.17 113.15
Lys, K Lysine C6H12N2O2 146.19 128.17
Met, M Methionine C5H11NO2S 149.21 131.19
α-Me-Leu α-Methylleucine C7H15NO2S 145.20 127.18
Phe(4-Me) 4-Methylphenylalanine C10H13NO2 179.22 161.20
α-Me-Phe α-Methylphenylalanine C10H13NO2 179.22 161.20
Ala(2-naphthyl) 3-(2-Naphthyl)-alanine C13H13NO2 215.25 197.23
Phe(4-NO2) 4-Nitrophenylalanine C9H10N4O2 210.19 192.17
Nle Norleucine C6H13NO2 131.17 113.15
Nva Norvaline C5H11NO2 117.15 99.13
Oic Octahydroindole-2-carboxylic acid C9H15NO2 169.22 151.20
Orn Ornithine C5H12N2O2 132.16 114.14
Pen Penicillamine C5H11N2O2S 149.21 131.19
Phe, F Phenylalanine C9H11N2O2 165.19 147.17
Phg Phenylglycine C8H9NO2 151.16 133.14
Pro, P Proline C5H9NO2 151.13 97.11
Pra Propargylglycine C5H7NO2 113.11 95.09
Ala(2’-pyridyl) 3-(2’-Pyridyl)-alanine C8H10N2O2 166.18 148.16
Pyr, Glp Pyroglutamine C5H7NO3 129.11 111.09
Ala(2’-quinoyl) 3-(2’-Quinoyl)-alanine C12H12N2O2 216.24 198.22
Sar Sarcosine C3H7NO2 89.09 71.07
Ser, S Serine C3H7NO3 105.09 87.07
Sta Statine C8H17NO3 175.23 157.21
Tic 1,2,3,4-Tetrahydroisoquinoline-3-carboxylic acid C10H11NO2 177.20 159.18
Tpi 1,2,3,4-Tetrahydronorhorman-3-carboxylic acid C12H12N2O2 216.24 198.22
Thz Thiaproline C4H7NO2S 133.17 115.15
Thi β-(2-Thienyl)alanine C7H9NO2S 171.22 153.20
Thr, T Threonine C4H9NO2S 119.12 101.10
Trp, W Tryptophan C11H12N2O2 204.23 186.21
Tyr, Y Tyrosine C9H11NO3 181.19 163.17
Val, V Valine C5H11NO2 117.15 99.13