Lesson 2.4 Flashcards
1
Q
Myoglobin:
A
oxygen binding protein 1 heme and 1 Fe +2 -Primary -Secondary -Tertiary
2
Q
Primary:
A
153 amino acids = 152 peptide bonds
3
Q
Secondary:
A
alpha helices
4
Q
Tertiary:
A
globular 3D shape
5
Q
peptides =
A
multiple letters
beginning = amino terminus
ending = carboxyl terminus
6
Q
Hemoglobin (Hb):
A
oxygen binding protein complex
Quaternary: 4 subunits each with its own heme
7
Q
Quaternary:
A
2 alpha chains and 2 beta chains
4 hemes and 4 Fe +2
8
Q
Bisphosphoglycerate can bind to
A
Hb and blocks binding of O2 to hemes
9
Q
Allosteric regulators:
A
binds to Hb tetramer but not to any of the hemes
10
Q
pH:
A
goes down, Hb releases O2
11
Q
Temp. =
A
goes up, Hb releases O2
12
Q
(CO)2 =
A
goes up, Hb releases O2 and picks up CO2
13
Q
Mb =
A
binds more to O2
hemes 1, 1 of O2
14
Q
Hb =
A
50% binding = 2 O2, 2 hemes
