Amino Acid Browser
Alanine Ala    A
Cysteine Cys    C
Aspartic Acid Asp    D
Glutamic Acid Glu    E
Phenylalanine Phe    F
Glycine Gly    G
Histidine His    H
Isoleucine Ile    I
Lysine Lys    K
Leucine Leu    L
Methionine Met    M
Asparagine Asn    N
Proline Pro    P
Glutamine Gln    Q
Arginine Arg    R
Serine Ser    S
Threonine Thr    T
Valine Val    V
Tryptophan Trp    W
Tyrosine Tyr    Y
Nonpolar, aliphatic R group
- Nonessential in mammals
 		Codon Sequences:
GCU GCC GCA GCG
Alanine image
C3H7NO2
Mass Peptide
mass 		Monoisotopic
mass 		Occurence
in Protein
(%) 		pKa 1
(-COOH) 		pKa 2
(-NH3) 		pKa R
(Side Chain) 		pI Hydropathy
Index* 		Hydrophobicity
Designation**
89.09 71.08 71.04 7.8 2.3 9.9 - 6.01 1.8 L

For the designation of atoms, IUPAC recommends the substitution of Greek letters by the equivalent uppercase Roman letters.
*A scale combining hydrophobicity and hydrophilicity of R groups; negative numbers tend to be hydrophilic, positive numbers tend to be hydrophobic.
**Hydrophobic = L, Hydrophilic = W, Neutral = N
References for information in the above tables and figures.