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(not structure)
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nonpolar, aliphatic
Glycine, Alanine, Proline, Valine, Leucine, Isoleucine, Methionine
nonpolar, aromatic
Phenylalanine, Tyrosine, Tryptophan
polar, uncharged
Serine, Threonine, Cysteine, Asparagine, Glutamine
positively charged (basic)
Lysine, Arginine, Histidine
negatively charged (acidic)
Aspartate, Glutamate
pKa of carboxylic acid group
~2.00
pKa of amine group
~9.50
Tyrosine pKr
10.07
Cysteine pKr
8.18
Lysine pKr
10.53
Histidine pKr
6.00
Arginine pKr
12.48
Aspartate pKr
3.65
Glutamate
4.25
Gly
G
Ala
A
Pro
P
Val
V
Leu
L
Ile
I
Met
M
Phe
F
Tyr
Y
Trp
W
Ser
S
Thr
T
Cys
C
Asn
N
Gln
Q
Lys
K
His
H
Arg
R
Asp
D
Glu
E
nonpolar molecules are ___ and form ____
hydrophobic; hydrogen bonds
polar molecules are
hydrophillic