Amino Acid Browser
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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 |
|
Polar, uncharged R group - Nonessential in mammals |
Codon Sequences: UGU UGC |
|
C3H7NO2S
|
|
Mass
|
Peptide
mass
|
Monoisotopic
mass
|
Occurence
in Protein
(%)
|
|
pKa 1
(-COOH)
|
pKa 2
(-NH3)
|
pKa R
(Side Chain)
|
pI
|
Hydropathy
Index*
|
Hydrophobicity
Designation**
|
121.16
|
103.14
|
103.01
|
1.9
|
|
1.8
|
10.8
|
8.6
|
5.07
|
2.5
|
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.
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