UPS chapter 8

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1
What amino acid is a secondary amine whose presence in a protein disrupts normal secondary structure?
proline
2
Hydrophilic amino acids have side chains that contain () of () atoms
O, N
3
The acidic amino acids (aspartic and glutamic acids) have () that are negatively charged, whereas the basic amino acids (lysine,
arginine, and histidine) have () that are positively charged.
carboxyl groups, nitrogen atoms
4
Serine and threonine are sites for O-linked glycosylation of proteins, a
() modification that should be associated with the ().
posttranslational, Golgi apparatus
5
Asparagine is a site for N-linked glycosylation of proteins, a () modification that should be associated with the ().
cotranslational, endoplasmic reticulum
6
G is for
collagen
7
A is for
glucogenesis
8
V is for
maple syrup urine disease
9
L is for
maple syrup urine disease
10
I is for
maple syrup urine disease
11
P is for
Hydroxyproline
12
Name all the nonpolar, aliphatic side chain amino acids
G, A, V, L, I, P
13
Name all the aromatic side chain amino acids
F, Y, W
14
F is for
catecholamine precursor
15
Y is for
catecholamine precursor
16
W is for
serotonin, niacin
17
Hydrophobic amino acids are () where environment is nonpolar
membrane-spanning
18
() can be considered nonpolar or polar because of the ability of the -OH group to form a ()
Tyrosine, hydrogen bond
19
Name all the acids that have positively charged R groups
K, R, H
20
Name all the acids that have negatively charged R groups
D, E
21
Name all the acids that have polar, uncharged R groups
S, T, C, M, N, Q
22
K is for
hydroxylysine
23
R is for
urea precursor
24
H is for
Histamine
25
D is for
urea cycle
26
E is for
GABA
27
S is for
sites for O-glycosylation
28
T is for
sites for O-glycosylation
29
C is for
forms disulfide dimers
30
M is for
methyl donor
31
N is for
sites for N-glycosylation
32
Q is for
carrier of blood ammonia
33
name all the essential amino acids
R, H, I, L, K, M, P, T, W, V
34
() is essentialy only during periods of positive nitrogen balance
Arginine
35
5 factors associated with negative nitrogen balance
protein malnutrition(kwashiorkor), Dietary deficiency of even 1 essential amino acid, starvation, uncontrolled diabetes, infection
36
4 factors associated with positive nitrogen balance
growth, pregnancy, convalescence(recovery phase of injury or surgery), recovery from condition associated with negative nitrogen balance
37
() is a chronic deficiency of calories
marasmus
38
2 independent properties of chemical reactions
energy and rate
39
What happens to Km and Vmax when competitive inhibitor is added?
Km increase, Vmax no effect
40
What happens to Km and Vmax when incompetitive inhibitor is added?
Km no effect, Vmax decrease
41
2 examples of competitive inhibitors
statin drugs(HMG CoA), methotrexate(dihydrofolate reductase)
42
1 example of noncompetitive inhibitors
allopurinol(xanthine oxidase)
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