mRNA Codon - Amino Acid Table
Second Letter
U
C
A
G
F
i
r
s
t

L
e
t
t
e
r
U
3
r
d
U
Phenylalanine
Serine
Tyrosine
Cysteine
C
Phenylalanine
Serine
Tyrosine
Cysteine
A
Leucine
Serine
Stop
Stop
G
Leucine
Serine
Stop
Tryptophan
C
3
r
d
U
Leucine
Proline
Histidine
Arginine
C
Leucine
Proline
Histidine
Arginine
A
Leucine
Proline
Glutamine
Arginine
G
Leucine
Proline
Glutamine
Arginine
A
3
r
d
U
Isoleucine
Threonine
Asparagine
Serine
C
Isoleucine
Threonine
Asparagine
Serine
A
Isoleucine
Threonine
Lysine
Arginine
G
Methionine (start)
Threonine
Lysine
Arginine
G
3
r
d
U
Valine
Alanine
Aspartic acid
Glycine
C
Valine
Alanine
Aspartic acid
Glycine
A
Valine
Alanine
Glutamic acid
Glycine
G
Valine
Alanine
Glutamic acid
Glycine

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