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

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.