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Department of Chemistry & Biochemistry
San Francisco State University
Chem 452, Integrated Laboratory
Amino Acid Project

The link for each amino acid in the table below contains a PDB file of the coordinates for the Zwitterion form of each amino acid. The molecule can be displayed with CHIME or RASMOL, if either is installed in your browser.

Name

Symbol

Side Chain

Occurence (%)

Alanine

A, Ala

 
CH3-

7.49

Arginine

R, Arg

 
HN=C(NH2)-NH-(CH2)3-

5.22

Asparagine

N, Asn

 
H2N-CO-CH2-

4.53

Aspartic acid

D, Asp

HOOC-CH2-

5.22

Beta-alanine

-, ---

H2NCH2CH2COOH

0 ! - beta-amino acid!

Cysteine

C, Cys

HS-CH2-

1.82

Glutamine

Q, Gln

H2N-CO-(CH2)2-

4.11

Glutamic acid

E, Glu

HOOC-(CH2)2-

6.26

Glycine

G, Gly

H-

7.10

Histidine

H, His

 
N=CH-NH-CH=C-CH2-
|__________|

2.23

Isoleucine

I, Ile

 
CH3-CH2-CH(CH3)-

5.45

Leucine

L, Leu

 
(CH3)2-CH-CH2-

9.06

Lysine

K, Lys

 
H2N-(CH2)4-

5.82

Methionine

M, Met

 
CH3-S-(CH2)2-

2.27

Phenylalanine

F, Phe

 
Phenyl-CH2-

3.91

Proline

P, Pro

 
-N-(CH2)3-CH-
 |_________|

5.12

Serine

S, Ser

 
HO-CH2-

7.34

Threonine

T, Thr

 
CH3-CH(OH)-

5.96

Tryptophan

W, Trp

 
Phenyl-NH-CH=C-CH2-
|___________|

1.32

Tyrosine

Y, Tyr

 
4-OH-Phenyl-CH2-

3.25

Valine

V, Val

 
CH3-CH(CH2)-

6.48

 

 

 

 

This table was prepared using a similar table prepared by Rockerfeller University. The amino acid occurrence statistics were taken compiled by the Rockerfeller authors using the NCBI database.