Chem 471 � Amino Acids

Alanine
Ala
A

Aspartate (no H) / Aspartic Acid (H)
Asp
D

Asparagine
Asn
N

Glutamate (no H) / Glutamic Acid (H)
Glu
E

Glutamine
Gln
Q

Serine
Ser
S

Tyrosine
Tyr
Y

Phenylalanine
Phe
F

Glycine
Gly
G

Proline
Pro
P

Arginine
Arg
R

Valine
Val
V

Leucine
Leu
L

Cysteine
Cys
C

Lysine
Lys
K

Isoleucine
Ile
I

Threonine
Thr
T

Tryptophan
Trp
W

Histidine
His
H

Methionine
Met
M

2

pKa of alpha carboxylate

10

pKa of alpha amino group

4

pKa of aspartate's R group

4

pKa of glutamate's R group

6

pKa of histidine's R group

10

pKa of lysine's R group

12

pKa of arginine's R group