Canonical amino acids

A list of all 20 canonical amino acids (in L-form). Designed to help memorize the structures and names. The structures do not accounts for pH. All amino acid will be written in the form: Name (3 Letter, 1 Letter: pK1, pK2, pKR if available). Most amino acids have pK1 (-COOH) range around 2.1-2.4 and pK2 (-NH3+) range around 9.1-9.7.

Alanine (Ala, A: 2.34, 9.69)

Cysteine (Cys, C: 1.96, 10.28, 8.18)

Aspartic acid (Asp, D: 1.88, 9.60)

Glutamic acid (Glu, E: 2.19, 9.67, 4.25)

Phenylalanine (Phe, F: 1.83, 9.13)

Glycine (Gly, G: 2.34, 9.60)

Histidine (His, H: 1.82, 9.17, 6.00)

Isoleucine (Ile, I: 2.36, 9.68)

Lysine (Lys, K: 2.18, 8.95, 10.53)

Leucine (Leu, L: 2.36, 9.60)

Methionine (Met, M: 2.28, 9.21)

Asparagine (Asn, N: 2.02, 8.80)

Proline (Pro, P: 1.99, 10.96)

Glutamine (Gln, Q: 2.17, 9.13)

Arginine (Arg, R: 2.17, 9.04, 12.48)

Serine (Ser, S: 2.21, 9.15)

Threonine (Thr, T: 2.11, 9.62)

Valine (Val, V: 2.32, 9.62)

Tryptophan (Trp, W: 2.38, 9.39)

Tyrosine (Tyr, Y: 2.20, 9.11, 10.07)