Flashcards in L18- Oxidative phosphorylation continued Deck (12):
What are the five complexes involved in?
Complexes I-IV are involved in electron transport
Complex V is an ATP synthase
In complex IV what's the source of electrons?
What is the net transfer in complex IV?
O2 + 4e- +4H+ for every pair of electrons. Makes H2O
What does the formation of H2O remove from the matrix?
2H+. 2 protons go to make water
What does complex V do?
It's the ATP synthase.
Uses the proton gradient to make ATP.
Knob and stalk structure.
F1= knob- contains the catalytic subunits
F0=stalk- has a proton channel
How are ATP and ADP transported across the inner mitochondrial membrane?
Adenosine nucleotide translocase. Antiport exchange of ATP for ADP
How are Pi and H+ transported across the inner mitochondrial membrane?
Symport of Pi and H+ together. It's electroneutral
What is the P:O ratio?
molecules of ADP phosphorylated / atoms of oxygen reduced
How many H+ have to be translocated by ATP synthase for each ATP produced?
How many H+ are needed to transport Pi, ADP and ATP?
1H+. It goes through with Pi as a symport
What's the net H+ needed to be transported for each ATP molecule?
3 for the atp synthase and 1 through the symport so that adp and atp can move across i think