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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 |
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|
Mass
|
Peptide
mass
|
Monoisotopic
mass
|
Occurence
in Protein
(%)
|
|
pKa 1
(-COOH)
|
pKa 2
(-NH3)
|
pKa R
(Side Chain)
|
pI
|
Hydropathy
Index*
|
Hydrophobicity
Designation**
|
|
204.22
|
186.21
|
186.08
|
1.4
|
|
2.4
|
9.4
|
-
|
5.89
|
-0.9
|
L
|
|
|
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|
For the designation of atoms, IUPAC recommends the substitution of Greek letters
by the equivalent uppercase Roman letters.
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*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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