PFKP Antibody – Rabbit Polyclonal

The PFKP gene encodes the platelet isoform of phosphofructokinase (PFK) (ATP:D-fructose-6-phosphate-1-phosphotransferase, EC 2.7.1.11). PFK catalyzes the irreversible conversion of fructose-6-phosphate to fructose-1,6-bisphosphate and is a key regulatory enzyme in glycolysis. The PFKP gene, which maps to chromosome 10p, is also expressed in fibroblasts. See also the muscle (PFKM; MIM 610681) and liver (PFKL; MIM 171860) isoforms of phosphofructokinase, which map to chromosomes 12q13 and 21q22, respectively. Vora (1981) [PubMed 6451249] determined that full tetrameric phophofructokinase enzyme expressed in platelets can be composed of subunits P4, P3L, and P2L2.[supplied by OMIM, Mar 2008]

PFKP: phosphofructokinase, platelet type. An ubiquitous metabolic enzyme involved in the synthesis and degradation of fructose 2,6-bisphosphate. Key control step of glycolysis. An allosteric enzyme activated by ADP, AMP, or fructose bisphosphate and inhibited by ATP or citrate. Activity: ATP D-fructose 6-phosphate = ADP D-fructose 1,6-bisphosphate. The holoenzyme consists of 4 subunits. The liver and muscle enzymes are homo-tetramers of four liver or muscle isoforms, respectively. The red blood cell enzyme consists hetero-tetramers of the muscle and liver isoforms. A subunit composition with a higher proportion of platelet type subunits is found in platelets, brain and fibroblasts.

Protein type: Carbohydrate Metabolism - pentose phosphate pathway; Kinase, other; Carbohydrate Metabolism - galactose; Carbohydrate Metabolism - fructose and mannose; EC 2.7.1.11; Carbohydrate Metabolism - glycolysis and gluconeogenesis

Chromosomal Location of Human Ortholog: 10p15.3-p15.2

Cellular Component: membrane; nucleus; cytosol

Molecular Function: metal ion binding; protein complex binding; 6-phosphofructokinase activity; ATP binding

Biological Process: glycolysis; carbohydrate metabolic process; carbohydrate phosphorylation; glucose metabolic process; pathogenesis; fructose 6-phosphate metabolic process