Cat No.
NATE-0287
Description
Glycerol kinase is a phosphotransferase enzyme involved in triglycerides and glycerophospholipids synthesis. Glycerol kinase catalyzes tge MgATP-dependent phosphorylation of glycerol to produce sn-glycerol-3-phosphate and is the rate limiting enzyme in the utilization of glycerol. It is also subject to feedback regulation by fructose-1,6-bisphosphate.
Abbr
GK, Native (Cellulomonas sp.)
Alias
GK
Species
Cellulomonas sp.
Form
Lyophilized powder containing phosphate buffer salts and sodium gluconate
Enzyme Commission Number
EC 2.7.1.30
Bio-activity
25-75 units/mg protein
CAS No.
9030-66-4
Molecular Mass
mol wt ~128 kDa ((by gel filtration)
pH Stability
pH 5.5 x 10.0 (25°C, 20hr)
Michaelis Constant
4.4 x 10-5M (Glycerol), 4.3 x 10-4M (ATP)
Isoelectric point
4.2
Unit Definition
One unit will convert 1.0 μmole of glycerol and ATP to L-α-glycerophosphate and ADP per min at pH 9.8 at 25°C in a coupled system with PK/LDH.
Optimum pH
9.8 (G-3-PDH system), 7.8 (G-3-P oxidase system)
Optimum temperature
500C
Thermal stability
below 40°C (pH 7.5, 15min)
Inhibitors
p-Chloromercuribenzoate, heavy metal ions (Pb++, Fe++, Hg++, Ag+)
Applications
This enzyme is useful for enzymatic determination of glycerol and triglyceride when coupled with glycerol-3-phosphate dehydrogenase (=G-3-P DH, G3D-301), glycerol-3-phosphate oxidase (=G-3-P oxidase, G3O-301, G3O-311, G3O-321) or pyruvate kinase (PYK-301) and lactate dehydrogenase (LCD-209, LCD-211), lipoprotein lipase (LPL-311, LPL-314) in clinical analysis.
Synonyms
EC 2.7.1.30; glycerokinase; GK; ATP:glycerol-3-phosphotransferase; glycerol kinase (phosphorylating); glyceric kinase; 9030-66-4
