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Fructose-6-phosphate Kinase from Bacillus stearothermophilus

Type VII, lyophilized powder, ≥50 units/mg protein

6-Phosphofructokinase, ATP:D-fructose 6-phosphate 1-phosphotransferase
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Type VII

Quality Level


lyophilized powder

specific activity

≥50 units/mg protein

mol wt

34 kDa

shipped in

wet ice

storage temp.


General description

Bacillus stearothermophilus phosphofructokinase (BsPFK) is a homotetramer that is allosterically inhibited by phosphoenolpyruvate (PEP), which binds along one dimer-dimer interface.
Fructose-6-phosphate kinase from Bacillus stearothermophilus, a 34 kDa enzyme, belongs to phosphofructokinase (PFK) - like superfamily. The glutamate 161 and arginine 162 residues at the active site are crucial for substrate binding.


Fructose-6-phosphate Kinase from Bacillus stearothermophilus was shown to interact with neuronal nitric oxide synthase (nNOS) causing a defect in glycolytic metabolism and increased fatigability in dystrophic muscle.
Fructose-6-phosphate kinase from Bacillus stearothermophilus has been used:
  • in steady state analysis of phosphofructokinase activity in the presence of ATP deuterated at the C8 position(C8-D ATP)
  • for standard curve generation for quantifying muscle phosphofructokinase (PFK) activity


100, 250 units in glass bottle

Biochem/physiol Actions

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.

Unit Definition

One unit will convert 1.0 μmole of fructose 6-phosphate and ATP to fructose 1,6-diphosphate and ADP per minute at pH 9.0 at 30 °C.

Physical form

Lyophilized powder containing buffer salt (e.g. phosphate buffer, or Tris buffer with NaCl)

Storage Class Code

11 - Combustible Solids



Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificate of Analysis

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Certificate of Origin

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