What is 6-Phosphofructo-1-kinase?

An allosteric enzyme that regulates glycolysis by catalyzing the transfer of a phosphate group from ATP to fructose-6-phosphate to yield fructose-1,6-bisphosphate. D-tagatose- 6-phosphate and sedoheptulose-7-phosphate also are acceptors. UTP, CTP, and ITP also are donors. In human phosphofructokinase-1, three types of subunits have been identified. They are muscle type M (PHOSPHOFRUCTOKINASE-1, MUSCLE TYPE); liver type L (PHOSPHOFRUCTOKINASE-1, LIVER TYPE); and type C (PHOSPHOFRUCTOKINASE-1, C TYPE) found in platelets, brain, and other tissues.