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Great new Krebs cycle (Citric Acid cycle) movie…. http:// www.youtube.com/watch?v =A1DjTM1qnPM. fig 16-13. Krebs cycle features and functions …. fig 16-13. O. CH 3 -C. O -. O. O. CH 3 -C. CH 3 -C. it’s all about acetate…. acetate. acetyl group. acetyl coenzyme A or acetyl-CoA.
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Great new Krebs cycle (Citric Acid cycle) movie… http://www.youtube.com/watch?v=A1DjTM1qnPM fig 16-13
Krebs cycle features and functions… fig 16-13
O CH3-C O- O O CH3-C CH3-C it’s all about acetate… acetate acetyl group acetyl coenzyme A or acetyl-CoA S-CoA AcCoA rh
all roads lead to acetyl-CoA… fig16-1
electrons from acetyl groups fig16-1
energy from electrons fig16-1
This is HS-CoA, or CoA-SH, CoA, or coenzyme A CoA-SH, or HS-CoA, or CoA fig16-3
where the acetyl groups come from pyruvate dehydrogenase: PDH fig16-2
TPP as a carbanion nucleophile in pyruvate metabolism fig 14-13
Lipoic acid cofactor of PDH E2 The “business end” of PDH fig16-4
The PDH complex approx. 4.5 x 106 MW fig16-5
The PDH complex fig16-5
The PDH catalytic cycle oxidation of pyruvate fig16-6 (old)
Please read and LEARN “The Name Game”
The: Krebs cycle citric acid cycle TCA cycle fig16-7
Citrate synthase and its substrates… fig 16-8
Getting fresh carbons into the act why it’s called the citric acid cycle pg 622
making citrate asymmetric remember this for later… pg 622
an iron-sulfer cluster in aconitase fig16-10
electrons! NADH is the main carrier of Krebs cycle-derived electrons pg 624 (less fancy picture)
more electrons! note CoA-SH has re-entered the picture pg 625
direct production of a high energy phosphate but not ATP… instead it’s GTP pg 626
direct production of a high energy phosphate but not ATP… instead it’s GTP pg 626
The business end of FAD or FMN isoalloxazine ring rh
a sensible inhibitor of succinate dehydrogenase INHIBITOR pg 628
Hydration of fumarate old pg 612
Hydration of fumarate pg 628
substrate product high specificity exemplified by substrates and products of fumarase not a substrate pg 628
substrate product high specificity exemplified by substrates and products of fumarase not a product pg 628
the final electron removal pg 628
Krebs cycle features and functions… fig 16-13