Amino Acid Properties: Charged, Polar, and Nonpolar Classification

Aspartic acid

Asp

D

Negatively charged

Glutamic acid

Glu

E

Negatively charged

Arginine

Arg

R

Positively charged

Lysine

Lys

K

Positively charged

Histidine

His

H

Positively charged

Asparagine

Asn

N

uncharged polar

Glutamine

Gln

Q

uncharged polar

Serine

Ser

S

uncharged polar

Threonine

Thr

T

uncharged polar

Tyrosine

Tyr

Y

uncharged polar

Alanine

Ala

A

nonpolar

Glycine

Gly

G

nonpolar

Valine

Val

V

nonpolar

Leucine

Leu

L

nonpolar

Isoleucine

Ile

I

nonpolar

Proline

Pro

P

nonpolar

Phenylalanine

Phe

F

nonpolar

Methionine

Met

M

nonpolar

Tryptophan

Trp

W

nonpolar

Cysteine

Cys

C

nonpolar

Asp

Aspartic Acid

D

Negatively charged

Glu

Glutamic Acid

E

Negatively charged

Arg

Arginine

R

Positively charged

Lys

Lysine

K

Positively charged

His

Histidine

H

Positively charged

Asn

Asparagine

N

Uncharged polar

Gln

Glutamine

Q

Uncharged polar

Ser

Serine

S

Uncharged polar

Thr

Threonine

T

Uncharged polar

Tyr

Tyrosine

Y

Uncharged polar

Ala

Alanine

A

nonpolar

Gly

Glycine

G

nonpolar

Val

Valine

V

nonpolar

Leu

Leucine

L

nonpolar

Ile

Isoleucine

I

nonpolar

Pro

Proline

P

nonpolar

Phe

Phenylalanine

F

nonpolar

Met

Methionine

M

nonpolar

Trp

Tryptophan

W

nonpolar

Cys

Cysteine

C

nonpolar

D

Aspartic acid

Asp

negatively charged

E

Glutamic acid

Glu

negatively charged

R

Arginine

Arg

Positively charged

K

Lysine

Lys

positively charged

H

Histidine

His

positively charged

N

Asparagine

Asn

uncharged polar

Q

Glutamine

Gln

uncharged polar

S

Serine

Ser

uncharged polar

T

Threonine

Thr

uncharged polar

Y

Tyrosine

Tyr

uncharged polar

A

Alanine

Ala

nonpolar

G

Glycine

Gly

nonpolar

V

Valine

Val

nonpolar

L

Leucine

Leu

nonpolar

I

Isoleucine

Ile

nonpolar

P

Proline

Pro

nonpolar

F

Phenylalanine

Phe

nonpolar

M

Methionine

Met

nonpolar

W

Tryptophan

Trp

nonpolar

C

Cysteine

Cys

nonpolar