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4.1.
L-‐AMINO ACIDS
(OVERVIEW)
Acid-base structures correspond to pH 7
4.1.1. NON-‐POLAR
(HYDROPHOBIC) R-‐GROUPS
H
NH
3 +
-
OOC
CH
3
H
NH
3 +
-
OOC
HC
H
NH
3 +
-
OOC
CH
2
H
NH
3 +
-
OOC
HC
CH
3
CH
3
HC CH
3
CH
3
CH
2
CH
3
CH
3
Alanine
ALA
A
Valine
VAL
V
Leucine
LEU
L
Isoleucine
ILE
I
H
NH
2 +
-
OOC
H
2
C
C
H
2
CH
2
Proline
PRO
P
H
NH
3 +
-
OOC
CH
2
Phenylalanine
PHE
F
H
NH
3 +
-
OOC
CH
2
C
CH
Tryptophan
TRP
W
N
H
H
NH
3 +
-
OOC
CH
2
CH
2
S
Methionine
MET
M
CH
3
H
NH
3 +
-
OOC
R
Down
Down
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