Amino Acids

Ala

Alanine

A

Alanine

Cys

Cysteine

C

Cysteine

Asp

Aspartic acid/Aspartate

D

Aspartic acid/Aspartate

Glu

Glutamic acid/Glutamate

E

Glutamic acid/Glutamate

Phe

Phenylanaline

F

Phenylalanine

Gly

Glycine

G

Glycine

His

Histidine

H

Histidine

Ile

Isoleucine

I

Isoleucine

Lys

Lysine

K

Lysine

Leu

Leucine

L

Leucine

Met

Methionine

M

Methionine

Asn

Asparagine

N

Asparagine

Pro

Proline

P

Proline

Gln

Glutamine

Q

Glutamine

Arg

Arginine

R

Arginine

Ser

Serine

S

Serine

Thr

Threonine

T

Threonine

Val

Valine

V

Valine

Trp

Tryptophan

W

Trp

Tyr

Tyrosine

Y

Tyrosine

Alanine side chain

CH3

Cysteine side chain

CH2SH

Aspartic acid side chain

CH2COOH

Glutamic acid side chain

CH2Ch2COOH

Phenylalanine side chain

CH2C6H5

Glycine side chain

H

CH2C3H3N2

Histidine side chain

CH(CH3)CH2CH3

Isoleucine side chain

(CH2)4NH2

Lysine side chain

CH2CH(CH3)2

Leucine side chain

CH2CH2SCH3

Methionine side chain

CH2CONH2

Asparagine side chain

CH2CH2CH2-

Proline side chain

CH2CH2CONH2

Glutamine side chain

(CH2)3NH-C(NH)NH2

Arginine side chain

CH2OH

Serine side chain

CH(OH)CH3

Threonine side chain

CH(CH3)2

Valine side chain

CH2C8H6N

Tryptophan side chain

CH2-C6H4OH

Tyrosine side chain

Aspartic acid acidity

acidic

Glutamic acid acidity

Acidic

Histidine acidity

Basic

Lysine acidity

Basic

Arginine acidity

Basic

Alanine

Hydrophobic/philic

Hydrophobic

Valine

Hydrophobic/philic

Hydorphobic

Isoleucine

Hydrophobic/philic

Hydrophobic

Leucine

Hydrophobic/philic

Hydrophobic

Methionine

Hydrophobic/philic

Hydrophobic

Phenylalanine

Hydrophobic/philic

Hydrophobic

Tyrosine

Hydrophobic/philic

Hydrophobic

Tryptophan

Hydrophobic/philic

Hydrophobic

Arginine

Hydrophobic/philic

Hydrophilic

Histidine

Hydrophobic/philic

Hydrophilic

Lysine

Hydrophobic/philic

Hydorphilic

Aspartic Acid

Hydrophobic/philic

Hydrophilic

Glutamic Acid

Hydrophobic/philic

Hydrophilic

Arginine

+/-

+

Histidine

+/-

+

Lysine

+/-

+

Aspartic Acid

+/-

-

Glutamic Acid

+/-

-

Polar Amino Acids

S

T

N

C

Q

Amino Acids with Electrically Charged Side Chains

PHRK NED

“Freak Ned”

Positive: HRK

Negative: ED

The smallest amino acid

Glycine

The bulkiest amino acid

Proline

The disulfide bonds amino acid

Cysteine

Alanine

Valine

Isoleucine

Leucine

Methionine

Phenylalanine

Tryptophan

Tyrosine

Asparagine

Glutamine

Serine

Threonine