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The enzyme fructose bisphosphatase (EC 3.1.3.11; systematic name D-fructose-1,6-bisphosphate 1-phosphohydrolase) catalyses the conversion of fructose-1,6-bisphosphate to fructose 6-phosphate in gluconeogenesis and the Calvin cycle, which are both anabolic pathways: [1] [2] D-fructose 1,6-bisphosphate + H 2 O = D-fructose 6-phosphate + phosphate ...
14121 Ensembl ENSG00000165140 ENSMUSG00000069805 UniProt P09467 Q9QXD6 RefSeq (mRNA) NM_000507 NM_001127628 NM_019395 RefSeq (protein) NP_000498 NP_001121100 NP_062268 Location (UCSC) Chr 9: 94.6 – 94.64 Mb Chr 13: 63.01 – 63.04 Mb PubMed search Wikidata View/Edit Human View/Edit Mouse Fructose-1,6-bisphosphatase 1 is a protein that in humans is encoded by the FBP1 gene. Function Fructose ...
Fructose 1,6-bisphosphate, known in older publications as Harden-Young ester, is fructose sugar phosphorylated on carbons 1 and 6 (i.e., is a fructosephosphate). The β-D-form of this compound is common in cells. [1] Upon entering the cell, most glucose and fructose is converted to fructose 1,6-bisphosphate. [2] [3]
The study signified that the characterization of the zebrafish swim bladder should not contain any expression fructose-1,6-bisphosphatase gene. The tissue of the swim bladder is known to be very high in glycogenic activity and lacking in gluconeogenesis, yet a predominant amount of Fbp was found to be expressed.
However, there is substrate cycling between F6P and F-1,6-BP. Fructose-1,6-bisphosphatase (FBPase) catalyzes the hydrolysis of F-1,6-BP back to F6P, the reverse reaction catalyzed by PFK1. There is a small amount of FBPase activity during glycolysis and some PFK1 activity during gluconeogenesis.
The enzyme-catalysed transfer of a phosphoryl group from ATP is an important reaction in a wide variety of biological processes. [1] Phosphofructokinase catalyses the phosphorylation of fructose-6-phosphate to fructose-1,6-bisphosphate, a key regulatory step in the glycolytic pathway.
When too much fructose-1,6-bisphosphate is produced, it inhibited the production of more PFK-1 activator. The enzyme is also inhibited by PEP, which is a reagent of pyruvate kinase. The product of glucose-1,6-bisphosphate synthase (glucose-1,6-bisphosphate) activates pyruvate kinase. Glucose-1,6-bisphosphate synthase appears to be activated by ...
Hexokinase IV (Glucokinase), also occurs in the liver and would be capable of phosphorylating fructose to fructose 6-phosphate (an intermediate in the gluconeogenic pathway); however, it has a relatively high Km (12 mM) for fructose and, therefore, essentially all of the fructose is converted to fructose-1-phosphate in the human liver.