Amino Acids

Biochemical Engineering


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Amino Acid   3-Letter 1-Letter   MW   pK1(-COOH) pK2(-NH2) pKR    pKI
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Alanine          Ala      A     89.09    2.34      9.69           6.00                  CH3-CH(NH2)-COOH   C3H7NO2
Arginine         Arg      R    174.20    2.17      9.04   12.48  11.15  HN=C(NH2)-NH-(CH2)3-CH(NH2)-COOH   C6H14N4O2
Asparagine       Asn      N    132.12                             5.41           H2N-CO-CH2-CH(NH2)-COOH   C4H8N2O3
Aspartic acid    Asp      D    133.10    2.09      9.82    3.86   2.77             HOOC-CH2-CH(NH2)-COOH   C4H7NO4
Cysteine         Cys      C    121.15    1.71     10.78    8.33   5.02               HS-CH2-CH(NH2)-COOH   C3H7NO2S
Glutamic acid    Glu      E    147.13    2.19      9.67    4.25   3.22          HOOC-(CH2)2-CH(NH2)-COOH   C5H9NO4
Glutamine        Gln      Q    146.15    2.17      9.13           5.65        H2N-CO-(CH2)2-CH(NH2)-COOH   C5H10N2O3
Glycine          Gly      G     75.07    2.34      9.6            5.97                    H-CH(NH2)-COOH   C2H5NO2
Histidine        His      H    155.16    1.82      9.17    6.0    7.47     NH-CH=N-CH=C-CH2-CH(NH2)-COOH   C6H9N3O2
                                                                           |__________|
Isoleucine       Ile      I    131.18                             5.94      CH3-CH2-CH(CH3)-CH(NH2)-COOH   C6H13NO2
Leucine          Leu      L    131.18    2.36      9.60           5.98        (CH3)2-CH-CH2-CH(NH2)-COOH   C3H13NO2
Lysine           Lys      K    146.19    2.18      8.95   10.53   9.59           H2N-(CH2)4-CH(NH2)-COOH   C6H14N2O2
Methionine       Met      M    149.21                             5.74         CH3-S-(CH2)2-CH(NH2)-COOH   C5H11NO2S
Phenylalanine    Phe      F    165.19                             5.48               Ph-CH2-CH(NH2)-COOH   C9H11NO2
Proline          Pro      P    115.13                             6.30              -(CH2)3-CH(NH )-COOH   C5H9NO2
                                                                                    |__________|
Serine           Ser      S    105.10    2.21      9.15           5.68               HO-CH2-CH(NH2)-COOH   C3H7NO3
Threonine        Thr      T    119.12    2.63     10.43           5.64           CH3-CH(OH)-CH(NH2)-COOH   C4H9NO3
Tryptophan       Trp      W    204.23                             5.89       Ph-NH-CH=C-CH2-CH(NH2)-COOH   C11H12N2O2
                                                                              |_______|
Tyrosine         Tyr      Y    181.19    2.20      9.11   10.07   5.66          HO-p-Ph-CH2-CH(NH2)-COOH   C9H11NO3
Valine           Val      V    117.15                             5.96            (CH3)2-CH-CH(NH2)-COOH   C5H11NO2
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Biochemical Engineering -- Amino Acids
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