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Phosphofructokinase catalyses the phosphorylation of fructose-6-phosphate to fructose-1,6-bisphosphate, a key regulatory step in the glycolytic pathway. [ 2 ] [ 3 ] It is allosterically inhibited by ATP and allosterically activated by AMP , thus indicating the cell's energetic needs when it undergoes the glycolytic pathway. [ 4 ]
Phosphofructokinase-1 (PFK-1) is one of the most important regulatory enzymes (EC 2.7.1.11) of glycolysis. It is an allosteric enzyme made of 4 subunits and controlled by many activators and inhibitors .
Phosphofructokinase-2 (6-phosphofructo-2-kinase, PFK-2) or fructose bisphosphatase-2 (FBPase-2), is an enzyme indirectly responsible for regulating the rates of glycolysis and gluconeogenesis in cells.
In enzymology, 1-phosphofructokinase (EC 2.7.1.56) is an enzyme that catalyzes the chemical reaction. ATP + D-fructose 1-phosphate → ADP + D-fructose 1,6-bisphosphate. Thus, the two substrates of this enzyme are ATP and D-fructose 1-phosphate, whereas its two products are ADP and D-fructose 1,6-bisphosphate. The enzyme was first described and ...
Phosphofructokinase is an important control point in the glycolytic pathway, since it is one of the irreversible steps and has key allosteric effectors, AMP and fructose 2,6-bisphosphate (F2,6BP). F2,6BP is a very potent activator of phosphofructokinase (PFK-1) that is synthesized when F6P is phosphorylated by a second phosphofructokinase .
6-phosphofructokinase, liver type (PFKL) is an enzyme that in humans is encoded by the PFKL gene on chromosome 21. [5] This gene encodes the liver (L) isoform of phosphofructokinase-1 , an enzyme that catalyzes the conversion of D - fructose 6-phosphate to D - fructose 1,6-bisphosphate , which is a key step in glucose metabolism ( glycolysis ).
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6-phosphofructokinase, muscle type is an enzyme that in humans is encoded by the PFKM gene on chromosome 12. Three phosphofructokinase isozymes exist in humans: muscle, liver and platelet . These isozymes function as subunits of the mammalian tetramer phosphofructokinase, which catalyzes the phosphorylation of fructose-6-phosphate to fructose-1 ...