Phosphoglycerate Kinase

Phosphoglycerate kinase catalyzes the interconversion of 1,3-bisphosphoglycerate (1,3BPG) and 3-phosphoglycerate (3PG) (see here).

1,3BPG + ADP <=> 3PG + ATP

The reaction involves a substrate-level phosphorylation in which phosphate from 1,3BPG is transferred to ADP to form ATP. The enzyme functions in the glycolysis, gluconeogenesis, and Calvin cycle pathways.

Previous step of glycolysis; Next step of glycolysis

See also: Enzymes of Glycolysis, Molecules of Glycolysis, Glycolysis, Gluconeogenesis, Substrate Level Phosphorylation

INTERNET LINKS:

1. RasMol Image of Phosphoglycerate Kinase (slow)

2. Glycolysis/Gluconeogenesis