Cyclical IMINO acid; the ring structure imparts strong conformational restraints (causes kinks in AA chain)
K
Strongly basic and hydrophilic
E
Moderately hydrophilic
M
Hydrophobic; contains sulfur
R
Free amino group makes it basic and hydrophilic
Q
Free carboxyl group makes it acidic and hydrophilic
G
Only non-chiral AA; due to small hydrogen R-group, can adopt many conformations not possible in other AAs
W
Yes, it's W...
D
Free carboxyl group makes it acidic and hydrophilic
1-Letter Abbreviation
Amino Acid and Character
Special Features
V
Hydrophobic
T
Contains -OH, can be modified by phosphorylation
S
Contains -OH, can be modified by phosphorylation
I
Hydrophobic
A
Hydrophobic
N
Carbohydrate can be covalently linked to its -NH group
C
Can form disulfide (S-S) bonds by oxidation of -SH groups
F
Very hydrophobic
L
Hydrophobic
H
Imidazole ring has pKa of 6-- very small pH shifts can change the charge in physiological conditions
Quiz Playlist
Details
More Info:
*Two part-answer: amino acid name first, then whether it is polar, nonpolar, or charged* If charged, indicate the charge under physiological conditions.
Example: Aspartic Acid Negative
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