PFK-1 undergoes activation in the presence of elevated AMP. The most potent activator is fructose-2,6-bisphosphate, which is produced by PFK-2 from the same substrate, fructose 6-phosphate. PFK-2 is bifunctional and a key regulator for PFK-1. PFK-2 catalyzes the synthesis of fructose-2,6-bisphosphate, and contains fructose-2,6-biphosphatase activity that catalyzes the degradation of fructose-2,6-bisphosphate. PFK-2 is dimeric and isoenzymes include PFK-2 liver (PFKFB1, PFRX), PFK-2 cardiac (PFKFB2), PFK-2 placental (PFKFB3, inducible PFK-2) and PFK-2 testis (PFKFB4).
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Protein Aliases: 6-bisphosphatase; 6-bisphosphatase 2; 6-P2ase 2; 6-P2ase heart-type isozyme; 6-phosphofructo-2-kinase; 6-phosphofructo-2-kinase/fructose-2; 6-phosphofructo-2-kinase/fructose-2,6-bisphosphatase 2; 6-Phosphofructo-2-kinase/fructose-2,6-bisphosphatase 2 (heart); 6PF-2-K/Fru-2; 6PF-2-K/Fru-2,6-P2ase 2; 6PF-2-K/Fru-2,6-P2ASE heart-type isozyme; fructose 6-phosphate 2-kinase/fructose 2,6-bisphosphatase; Fructose-2; Fructose-2,6-bisphosphatase; fructose-2,6-bisphosphatase, cardiac isozyme; PFK-2 car; PFK-2 cardiac; PFK-2/FBPase-2; PFK-2/FBPase-2 gene B; PFK/FBPase 2; PFKFB, cardiac; PFKFB2; RH2K
Gene Aliases: 4930568D07Rik; PFK-2/FBPase-2; PFKFB2; RH2K