|Superclasses:||Reactions Classified By Conversion Type → Simple Reactions → Chemical Reactions → Composite Reactions|
|Reactions Classified By Conversion Type → Simple Reactions → Chemical Reactions → Protein-Modification Reactions|
|Reactions Classified By Substrate → Macromolecule Reactions → Protein-Reactions → Protein-Modification Reactions|
EC Number: 220.127.116.11
1.2.1.-: pyruvate + coenzyme A + NAD+ → acetyl-CoA + CO2 + NADH
In Pathway: pyruvate decarboxylation to acetyl CoA
The reaction direction shown, that is, A + B ↔ C + D versus C + D ↔ A + B, is in accordance with the Enzyme Commission system.
Most BioCyc compounds have been protonated to a reference pH value of 7.3, and some reactions have been computationally balanced for hydrogen by adding free protons. Please see the PGDB Concepts Guide for more information.
Mass balance status: Balanced.
Enzyme Commission Primary Name: pyruvate dehydrogenase (acetyl-transferring)
Enzyme Commission Synonyms: MtPDC (mitochondrial pyruvate dehydogenase complex), pyruvate decarboxylase, pyruvate dehydrogenase, pyruvate dehydrogenase (lipoamide), pyruvate dehydrogenase complex, pyruvate:lipoamide 2-oxidoreductase (decarboxylating and acceptor-acetylating), pyruvic acid dehydrogenase, pyruvic dehydrogenase
pyruvate + thiamin diphosphate + H+ = 2-(α-hydroxyethyl)thiamine diphosphate + CO2 ,
2-(α-hydroxyethyl)thiamine diphosphate + a [pyruvate dehydrogenase E2 protein] N6-lipoyl-L-lysine = a [pyruvate dehydrogenase E2 protein] N6-S-acetyldihydrolipoyl-L-lysine + thiamin diphosphate
Enzyme Commission Summary:
Contains thiamine diphosphate. It is a component (in multiple copies) of the multienzyme pyruvate dehydrogenase complex in which it is bound to a core of molecules of EC 18.104.22.168, dihydrolipoyllysine-residue acetyltransferase, which also binds multiple copies of EC 22.214.171.124, dihydrolipoyl dehydrogenase. It does not act on free lipoamide or lipoyllysine, but only on the lipoyllysine residue in EC 126.96.36.199.
This reaction is the sum of two individual reactions that are listed above.
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