Lecture 28 OXPHOS

Question 0

F0

Answer 0

C ring, b2, a

embedded in inner mitochondrial membrane

Question 1

F1 (ATPase/ATP synthase)

Answer 1

alpha, beta, gamma, delta, epsilon

resides in the matrix

Question 2

Rotor units

Answer 2

c ring, gamma, epsilon

Question 3

Stationary units

Answer 3

alpha, beta, delta, b2, a

Question 4

Mitochondrial matrix characteristics

Answer 4

very negative, high pH, PDH lives here, beta oxidation of FA’s occurs here, urea cycle happens here

Question 5

Inner membrane characteristics

Answer 5

impermeable to most everything except O2, CO2, H2O, NH3, ETC happens on this membrane

low pH
lots of [H+]

Question 6

Flavin proteins

Answer 6

FMN, FADH2

Question 7

what are cytochromes

Answer 7

Heme containing protein, have poryphirin ring structure w/Fe in the middle

Fe can reversibly bind electrons

Question 8

Complex I name

Answer 8

NADH-Q oxidoreductase

NADH supplier, Q receiver

Question 9

Complex 2 name

Answer 9

Succinate - Q reductase

FADH2 supplier
Q receiver

Question 10

Complex 3 name

Answer 10

Q-cytochrome c oxidoreductant

Q supplier
cytochrome C receiver

Question 11

Complex 4 name

Answer 11

Cytochrome C oxidase

cytochrome c supplier
O2 receiver