Biochemistry · Carbohydrate Metabolism

Pyruvate dehydrogenase complex

4 min read

Quick Orientation

Section

Definition

Objective
Understand the core idea
Keywords
Pyruvate dehydrogenase complex (PDH), irreversible oxidative decarboxylation, acetyl CoA

Site, Structure and Cofactors

Objective
See how the components fit together
Keywords
only in mitochondria, cardiac muscle and kidney, five cofactors

Metabolic Significance of Pyruvate

Objective
Learn the main facts and relationships
Keywords
citric acid cycle, fatty acid synthesis, gluconeogenesis

Reactions of the PDH Complex

Objective
Follow the sequence and key control points
Keywords
Step 1, hydroxyethyl-TPP, Step 2

Regulation of PDH

Objective
Track activators, inhibitors and feedback
Keywords
end-product inhibition, phosphorylation and dephosphorylation, PDH phosphatase

Clinical Correlation

Objective
Connect the mechanism to clinical findings
Keywords
Arsenic poisoning (arsenite), thiol (-SH) groups of lipoic acid

Definition