Fructose-1,6-bisphosphatase (FBP) is an important enzyme in glucose metabolism. It catalyzes the hydrolysis of fructose-1,6-bisphosphate to fructose-6-phosphate and inorganic phosphate. Fructose-6-phosphate kinase converts fructose-6-phosphate into fructose 1,6-bisphophate in the rate limiting step of the glycolysis cycle.
FBP, Native (Propionibacterium freudenreichii (shermanii))
Propionibacterium freudenreichii (shermanii)
FBP was used to study the kinetic mechanism of pyrophosphate-dependent phosphofructokinase from Propionibacterium freudenreichii.
lyophilized powder; Contains imidazole salts and stabilizer
Enzyme Commission Number
4.0-8.0 units/mg protein
One unit will convert 1.0 μmole of pyrophosphate and fructose 6-phosphate to fructose 1,6-diphosphate and inorganic phosphate per min at pH 7.4 at 30°C.
These two pyrophosphate-dependent fructose-6-phosphate kinases differ in their response to the physiological activator fructose 2,6-diphosphate [Fru (2,6)-P2]. The enzyme from Propionibacterium freudenreichii (F8381) reportedly is not affected by Fru (2,6)-P2. The enzyme from potato tubers (F2258) is stimulated by Fru (2,6)-P2 (half-maximal activation at 5.5 nM Fru (2,6)-P2 for potato tuber enzyme).
EC 126.96.36.199; 6-phosphofructokinase (pyrophosphate); pyrophosphate-fructose 6-phosphate 1-phosphotransferase; inorganic pyrophosphate-dependent phosphofructokinase; inorganic pyrophosphate-phosphofructokinase; pyrophosphate-dependent phosphofructo-1-kinase; pyrophosphate-fructose 6-phosphate phosphotransferase; 55326-40-4