Catalyzes the phosphorylation of D-fructose 6-phosphate, the first committing step of glycolysis. Uses inorganic phosphate (PPi) as phosphoryl donor instead of ATP like common ATP-dependent phosphofructokinases (ATP-PFKs), which renders the reaction reversible, and can thus function both in glycolysis and gluconeogenesis. Consistently, PPi-PFK can replace the enzymes of both the forward (ATP-PFK) and reverse (fructose-bisphosphatase (FBPase)) reactions.

Belongs to the phosphofructokinase type A (PFKA) family. Mixed-substrate PFK group III subfamily.

342 amino acids

MKVGVLTGGGDCPGLNAVIRAVVRKGVQEYGYDFTGFRDGWRGPLEGDTVPLDIPAVRGILPRGGTVLGSSRTNPLKQRDGIRRIKDNLAALGVEALITIGGEDTLGVATRLADEYGVPCVGVPKTIDNDLSATDYTFGFDTAVGIATEAIDRLHTTAESHMRVLVVEVMGRHAGWIALHSGLAGGANVILIPEQRFDVEQVCSWVTSRFRASYAPIVVVAEGAMPRDGDMVLKDESLDSYGHVRLSGVGEWLAKQIEKRTGNEARTTVLGHVQRGGTPSAFDRWLATRFGLHAVDCVHDGDFGKMVALRGTDIVRVPIAEATARLKTVDPALYEEVGVFFG

36.7 kDa

(Note: Representative image - actual molecular weight may vary depending on tag type and expression method)

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