Amino Acids

asp classification

Acidic Polar

Ionic and Hydrogen Bond Acceptor

asp pKr

4

NEG @ physio

asp

D

Alpha-Beta-Carboxylic Acid

glu classification

Acidic Polar
Ionic and Hydrogen Bond Acceptor

Glu pKr

4
NEG at physiological

Glu

E
Alpha-Beta-Gamma-Carboxylic Acid

Lys classification

Basic Polar
Histone acetylation

Lys pKr

9.5
POS at physiological

Lys

K
Alpha-1C-2C-3C-4C-NH3+

Arg classification

Basic polar

Guanadino group

Arg pKr

12.5

POS at physiological

Arg

R

Alpha-1C-2C-NH-3C-NH2

=NH2

His classification

Basic polar

Imidazole group

His pKr

6

NEUTRAL at physiological

His

H

Alpha

HN: =C

C====NH+

Ser classification

Polar
Phosphoylation

Ser pKr

13

Irrelevant, stable OH

Ser

S

Alpha-Beta-OH

Thr classification

Polar

Phosphorylation

Thr pKr

13
Irrelevant, stable OH

Thr

T

Alpha-Beta-OH

-Gamma C

Tyr classification

Polar

Phosphorylation

Tyr pKr

10

Unionized at physiological

Tyr

Y

Alpha-Phenol

Asn classification

Polar

Asn

N

Alpha-Beta-Carboxamide

Gln classification

Polar

Gln

Q

Alpha-Beta-Gamma-Carboxamide

Cys classification

Polar

Thiol, disulfide linkages

Cys pKr

8

Influenced by interactions

Cys

C

Alpha-Beta-SH

Gly classification

Nonpolar

A chiral

Gly

G

Alpha-H

Ala Classification

Nonpolar

Ala

A

Alpha-Beta

Ile classification

Nonpolar

Ile

I

Alpha-1C-3C-4C

-2C

Leu classification

Nonpolar

Leu

L

Alpha-1C-2C-3C

-4C

Met classification

Nonpolar

AUG codon

Met

M

Alpha-1C-2C-S-3C

Pro classification

Nonpolar

Rigid, kinks

Pro

P

H2N—Alpha

1C 3C

2C

Val classification

Nonpolar

Val

V

Alpha-1C-2C

-3C

Phe classification

Nonpolar aromatic

Phe

F

Alpha-1C-Benzene

Twp classification

Nonpolar aromatic

Intense UV spectrum

Twp

W

Alpha-2 rings, one with N one benzene