Many insect pest species also transmit viruses. The sapsucking species are effective virus vectors, delivering virus particles directly into the vascular tissue, thereby permitting their rapid dissemination throughout the plant

TLS Online TPP Program

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#XL - R Botany

Accumulation of alanine, which can be synthesized from pyruvate in one step, allosterically inhibits pyruvate kinase, slowing the production of pyruvate by glycolysis

TLS Online TPP Program

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#XL - R Botany

The liver PK isozyme (L form) is regulated by glucagon

TLS Online TPP Program

#Id: 346

#XL - R Botany

Pyruvate Carboxylase

a mitochondrial enzyme that requires the coenzyme biotin, converts the pyruvate to oxaloacetate

TLS Online TPP Program

#Id: 349

#XL - R Botany

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

#XL - R Botany

Transketolase requires the cofactor thiamine pyrophosphate (TPP)

TLS Online TPP Program

#Id: 354

#XL - R Botany

Acetyl-CoA and NADH are potent allosteric inhibitors of the enzyme.