The 20 Amino Acids Flashcard

Glycine

Gly

G

Not Essential

Hydrophobic

Alanine

Ala

A

Not essential

Hydrophobic

Valine

Val

V

Essential

Hydrophobic

Leucine

Leu

L

Essential

Hydrophobic

Isoleucine

Ile

I

Essential

Hydrophobic

What is the difference between an essential and a nonessential amino acid?
Both essential and nonessential amino acids are required for healthy growth and development. However, humans cannot manufacture any of the 9 essential amino acids, which must be obtained from our diet. We can manufacture the 11 nonessential amino acids.
Methionine

Met

M

Essential

Hydrophobic

Proline

Pro

P

Not essential

Hydrophobic

Serine

Ser

S

Not essential

Polar uncharged

Threonine

Thr

T

Essential

Polar uncharged

Asparagine

Asn

N

Not essential

Polar uncharged

Glutamine

Gln

Q

Not essential

Polar uncharged

Cysteine

Cys

C

Not essential

Polar uncharged

Phenylalanine

Phe

F

Essential

Hydrophobic aromatic

Tyrosine

Tyr

Y

Not essential

Hydrophobic aromatic

Tryptophan

Trp

W

Essential

Hydrophobic aromatic

Lysine

Lys

K

Essential

Polar charged

Arginine

Arg

R

Not essential

Polar charged

Histidine

His

H

Not essential

Polar charged

Aspartate (Aspartic Acid)

Asp

D

Not essential

Polar charged

Glutamate (Glutamic Acid)

Glu

E

Not essential

Polar charged

Get instant access to
all materials

Become a Member