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TLS Online TPP Program

#Id: 4146

Reactions of the C2 oxidative photosynthetic carbon cycle


#Unit 6. System Physiology – Plant #Carbon Reaction #Part B Pointers
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TLS Online TPP Program

#Id: 346

#Unit 1. Molecules and their Interaction Relevant to Biology

Pyruvate Carboxylase
a mitochondrial enzyme that requires the coenzyme biotin, converts the pyruvate to oxaloacetate
TLS Online TPP Program

#Id: 349

#Unit 1. Molecules and their Interaction Relevant to Biology

The oxaloacetate is converted to PEP by phosphoenolpyruvate carboxykinase. This Mg2+ dependent reaction requires GTP as the phosphoryl group donor.
TLS Online TPP Program

#Id: 353

#Unit 1. Molecules and their Interaction Relevant to Biology

Transketolase requires the cofactor thiamine pyrophosphate (TPP)
TLS Online TPP Program

#Id: 354

#Unit 1. Molecules and their Interaction Relevant to Biology

Acetyl-CoA and NADH are potent allosteric inhibitors of the enzyme. 
TLS Online TPP Program

#Id: 355

#Unit 1. Molecules and their Interaction Relevant to Biology

Acetyl-CoA inhibits the transacetylase component whereas NADH inhibits the dihydrolipoyl dehydrogenase component. 
TLS Online TPP Program

#Id: 356

#Unit 1. Molecules and their Interaction Relevant to Biology

The reaction catalyzed by citrate synthase is essentially a Claisen condensation, involving a thioester (acetyl-CoA) and a ketone (oxaloacetate)