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62 Cards in this Set

  • Front
  • Back
TCA cycle occurs in the
Mitochondria
TCA cycle is a common pathway for
Carbohydrate, Lipid, and Protein Metabolism
Acetyl CoA used in
Fatty Acid Biosynthesis, Cholesterol
Enzymes Used in TCA Cycle(8)
Citrate Synthetase
Aconitase
Isocitrate Dehydrogenase
α-ketoglutarate dehydrogenase
Succinyl CoA Synthetase
Succinyl Dehydrogenase
Fumarase
Malate Dehydrogenase
Citrate Synthetase
Formation of Citrate from Oxaloacetate and Acetyl CoA
Aconitase
Citrate to Isocitrate
Moves C4 Hydroxyl to C5.

Cis-Aconitate intermediate
Isocitrate Dehydrogenase
Isocitrate to α-ketoglutarate
(removal of first CO2 molecule)
α-ketoglutarate Dehydrogenase
α-ketoglutarate to Succinyl CoA
(Removal of 2nd CO2 molecule)
Succinyl CoA Synthetase
Succinyl CoA to Succinate

produces GTP
Succinyl Dehydrogenase
Succinate to Fumarate
Oxidation of C2-C3 bonnd
Any time alkene is formed. ___ is produced
FADH2
Fumarase
Fumarate to Malate
(addition of water)
Malate Dehydrogenase
Malate to Oxaloacetate
All Dehydrogenases produces ____
NADH
Sites of TCA cycle Regulation(3)
Citrate Synthetase
Isocitrate Dehydrogenase
α-ketoglutarate Dehydrogenase
Citrate Synthetase Inhibited by
ATP, NADH, Citrate
Isocitrate Dehydrogenase Inhibited by
ATP, NADH
Isocitrate Dehydrogenase Activated by
ADP
α-Ketoglutarate Dehydrogenase Inhibited by
ATP
NADH
Succinyl CoA
α-ketoglutarate Dehydrogenase Compound takes ______ and makes ____
Takes: α-ketoglutarate, NAD+, Acetyl CoA

Makes:Succinyl CoA, NADH, CO2
3 Subunits of the AKDC(Cofactors)
α-ketoglutarate dehydrogenase(TPP)
transsuccinylase(lipoamide)
Dihydrolipoyl Dehydrogenase(FAD)
2 forms of Arsenic common in poisoning
Aresnite(AsO2-)
Arsenate(HAsO42-)
HAsO4 isoelectronic with____and competes with___
HPO4-
Phosphate
Bonding of ___ prevents reformation of lipoamide
Arsenite
Mesaprosol used to treat
Human African Trypanosomiasis
Oxidative Phosphorylation occurs in
Inner membrane of mitochondria
Inner Membrane of mitochondria made up of mostly
proteins
Outer membrane of mitochondria made up of mostly
phospholipids
PDC, most of TCA, and Beta-Oxidation contained in
Mitochondrial Matrix
Electron chain _____ the IMM
polarizes
4 protein Complexes of Electron Transport Chain(type)
I. NADH-coenzyme Q(oxidoreductase)

II. Succinate-coenzyme Q(Oxidoreductase)

III.CoEnzyme Q-Cytochrome C(oxidoreductase)

IV. Cytochrome C Oxidase
Complex I uses ____ to transfer electrons from ____.
Uses: Ubiquinone
Electrons from: NADH
Complex I first transfers electrons to
FMN
Complex III has ___ as a cofactor
Needs___ Cyt C per Hydroquinone
Cofactor:Iron
2
Complex IV has __ as a cofactor
Has to be run___times to make 2 molecules of water
Cofactors: Fe, Cu
4
Complex II has ___ as a cofactor
Does not act as___
Cofactor:FAD
Does not act as proton pump
Complex IV reduces ___ stepwise
Reduces Oxygen
_____found in mitochondrial space near complex IV
Superoxide Dismutase
Superoxide Dismutase
destroys any reactive oxygen species
2 Domains of ATP synthesis and their functions
F0=cylinder with proton channel
F1=ATP production
ATP transported from IMM to mitochondrial space by
ADP-ATP translocase.
Complex I Inhibitors
Rotenone, Barbituates
Rotenone used for
head lice, scabies
Complex III inhibitors
Antimycin A
Antimycin A used a
topical fungicide, miticide, and insecticide
Complex IV inhibitors
Molecules that can compete with Oxygen for binding.
CO, CN-, N3-(high affinity for Iron III)
2 pathways to transport NADH produced in Glycolysis
Glycerol Phosphate Shuttle
Malate-Aspartate Shuttle
___pathway loses energy when transporting NADH
Glycerol Phosphate Shuttle
Glycerol-3-phosphate dehydrogenase
Dihydroxyacetone Phosphate to Glycerol-3-Phosphate
Glycerol-Phosphate Shuttle carries electrons to complex___
II
2 Enzymes involved in Malate-Aspartate Shuttle
Malate Dehydrogenase
Aspartate Aminotransferase
2 pathways to transport NADH produced in Glycolysis
Glycerol Phosphate Shuttle
Malate-Aspartate Shuttle
___pathway loses energy when transporting NADH
Glycerol Phosphate Shuttle
Glycerol-3-phosphate dehydrogenase
Dihydroxyacetone Phosphate to Glycerol-3-Phosphate
Glycerol-Phosphate Shuttle carries electrons to complex___
II
2 Enzymes involved in Malate-Aspartate Shuttle
Malate Dehydrogenase
Aspartate Aminotransferase
2 Transporters used in Malate Aspartate Shuttle
ASP/GLU transporter
AKG/Mal transporter

both found on inner mitochondrial membrane
In malate-aspartate shuttle, NADH donates its electrons to
Oxaloacetate
Malate Dehydrogenase
Oxaloacetate to Malate
Aspartate Aminotransferase
Oxaloacetate to Aspartate
Glutamate to alpha ketoglutarate
AKG/Malate transporter
brings malate into the matrix
exports alpha ketoglutarate into the IMS
ASP/GLU transporter
brings Glutamate into the matrix
exports Aspartate into IMS