Midterm Flashcards
1
Q
Alanine
A
- nonpolar/hydrophobic
- aliphatic (simple)
2
Q
Glycine
A
- nonpolar/hydrophobic
- aliphatic (simple)
3
Q
Leucine
A
- nonpolar/hydrophobic
- aliphatic
4
Q
Isoleucine
A
- nonpolar/hydrophobic
- aliphatic
5
Q
Phenylalanine
A
- nonpolar/hydrophilic
- aromatic
6
Q
Histidine
A
- positively charged/hydrophilic
- imidazole (positively charged aromatic ring)
- can be positive or neutral at physiological pH
7
Q
Cysteine
A
- polar
- sulfhydryl
- can form disulfide bridges with itself
8
Q
Proline
A
- nonpolar/hydrophobic
- aliphatic; self-bonding side chain
9
Q
Methionine
A
- nonpolar/hydrophobic
- aliphatic
10
Q
Glutamate
A
- negative charge
- carboxylic acid
11
Q
Aspartate
A
- negatively charged
- carboxylic acid
12
Q
Glutamine
A
- polar
- carboxyamide
13
Q
Asparagine
A
- polar
- carboxyamide
14
Q
Valine
A
- nonpolar/hydrophobic
- aliphatic
15
Q
Tryptophan
A
- nonpolar/hydrophobic
- aromatic
16
Q
Serine
A
- polar
- hydroxyl
17
Q
Threonine
A
- polar
- hydroxyl
18
Q
Tyrosine
A
- polar
- hydroxyl
19
Q
Lysine
A
- positive/hydrophilic
- amino
20
Q
Arginine
A
- positive/hydrophilic
- guanidinium
21
Q
Dissociation constant (Ka)
A
- likelihood of an acid to dissociate in solution
- weak acids less likely to dissociate; strong acids more likely to dissociate
- lower Ka = weaker acid
- higher Ka = stronger acid
