Standard Amino Acids
Chemical Properties, Physical Properties and General Information
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Amino Acid | Code | Formula | Molar Mass | Polarity | Acidity | Hydropathy Index | Isoelectric Point (pI) | pKaC | pKaN | van der Waals volume | Codons | Essential |
Alanine | Ala / A | C3H7NO2 | 89.09 | nonpolar | neutral | 1.8 | 6.01 | 2.35 | 9.87 | 67 | GCU, GCC, GCA, GCG |   |
Arginine | Arg / R | C6H14N4O2 | 174.20 | polar | basic (strong) | -4.5 | 10.76 | 1.82 | 8.99 | 148 | CGU, CGC, CGA, CGG, AGA, AGG | X |
Asparagine | Asn / N | C4H8N2O3 | 132.11 | polar | neutral | -3.5 | 5.41 | 2.14 | 8.72 | 96 | AAU, AAC |   |
Aspartic Acid | Asp / D | C4H7NO4 | 133.10 | polar | acidic | -3.5 | 2.85 | 1.99 | 9.90 | 91 | GAU, GAC |   |
Cysteine | Cys / C | C3H7NO2S | 121.15 | polar | neutral | 2.5 | 5.05 | 1.92 | 10.70 | 86 | UGU, UGC |   |
Glutamic Acid | Glu / E | C5H9NO4 | 147.13 | polar | acidic | -3.5 | 3.15 | 2.10 | 9.47 | 109 | GAA, GAG |   |
Glutamine | Gln / Q | C5H10N2O3 | 146.15 | polar | neutral | -3.5 | 5.65 | 2.17 | 9.13 | 114 | CAA, CAG |   |
Glycine | Gly / G | C2H5NO2 | 75.06 | nonpolar | neutral | -0.4 | 6.06 | 2.35 | 9.78 | 48 | GGU, GGC, GGA, GGG |   |
Histidine | His / H | C6H9N3O2 | 155.15 | polar | basic (weak) | -3.2 | 7.60 | 1.80 | 9.33 | 118 | CAU, CAC | X |
Isoleucine | Ile / I | C6H13NO2 | 131.17 | nonpolar | neutral | 4.5 | 6.05 | 2.32 | 9.76 | 124 | AUU, AUC, AUA | X |
Leucine | Leu / L | C6H13NO2 | 131.17 | nonpolar | neutral | 3.8 | 6.01 | 2.33 | 9.74 | 124 | UUA, UUG, CUU, CUC, CUA, CUG | X |
Lysine | Lys / K | C6H14N2O2 | 146.18 | polar | basic | -3.9 | 9.60 | 2.16 | 9.06 | 135 | AAA, AAG | X |
Methionine | Met / M | C5H11NO2S | 149.20 | nonpolar | neutral | 1.9 | 5.74 | 2.13 | 9.28 | 124 | AUG | X |
Phenylalanine | Phe / F | C9H11NO2 | 165.19 | nonpolar | neutral | 2.8 | 5.49 | 2.20 | 9.31 | 135 | UUU, UUC | X |
Proline | Pro / P | C5H9NO2 | 115.13 | nonpolar | neutral | -1.6 | 6.30 | 1.95 | 10.64 | 90 | CCU, CCC, CCA, CCG |   |
Serine | Ser / S | C3H7NO3 | 105.09 | polar | neutral | -0.8 | 5.68 | 2.19 | 9.21 | 73 | UCU, UCC, UCA, UCG, AGU, AGC |   |
Threonine | Thr / T | C4H9NO3 | 119.12 | polar | neutral | -0.7 | 5.60 | 2.09 | 9.10 | 93 | ACU, ACC, ACA, ACG | X |
Tryptophan | Trp / W | C11H12N2O2 | 204.22 | nonpolar | neutral | -0.9 | 5.89 | 2.46 | 9.41 | 163 | UGG | X |
Tyrosine | Tyr / Y | C9H11NO3 | 181.19 | polar | neutral | -1.3 | 5.64 | 2.20 | 9.21 | 141 | UAU, UAC |   |
Valine | Val / V | C5H11NO2 | 117.14 | nonpolar | neutral | 4.2 | 6.00 | 2.39 | 9.74 | 105 | GUU, GUC, GUA, GUG | X |
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