Glycerol kinase

From Wikipedia, the free encyclopedia
Jump to: navigation, search
glycerol kinase
Identifiers
EC number 2.7.1.30
Databases
IntEnz IntEnz view
BRENDA BRENDA entry
ExPASy NiceZyme view
KEGG KEGG entry
MetaCyc metabolic pathway
PRIAM profile
PDB structures RCSB PDB PDBe PDBsum
glycerol kinase
Identifiers
Symbol GK
Entrez 2710
HUGO 4289
OMIM 300474
RefSeq NM_000167
UniProt P32189
Other data
EC number 2.7.1.30
Locus Chr. X p21.3

Glycerol kinase is a phosphotransferase enzyme involved in triglycerides and glycerophospholipids synthesis.

Glycerol kinase catalyzes the transfer of a phosphate from ATP to glycerol thus forming glycerol phosphate (ATP + glycerol <=> ADP + sn-glycerol 3-phosphate). Adipocytes lack glycerol kinase so they cannot metabolize the glycerol produced during triacyl glycerol degradation. This glycerol is instead shuttled to the liver via the blood where it is:

  • phosphorylated by glycerol kinase to glycerol phosphate
  • converted to DHAP (dihydroxyacetone phosphate) which can participate in glycolysis or gluconeogenesis.

Enzyme regulation[edit]

This protein may use the morpheein model of allosteric regulation. [1]

Structure[edit]

Glycerol Kinase (alternative name, ATP:glycerol 3-phosphotransferase or Glycerokinase) adopts a ribonuclease H-like fold consisting of an alpha-beta 2-layer sandwich of CATH family 3.30.420.40. As of March 2010, there were 20 structures of this protein in the PDB, most of which are homodimeric.

See also[edit]

External links[edit]

References[edit]

  1. ^ T. Selwood and E. K. Jaffe. (2011). "Dynamic dissociating homo-oligomers and the control of protein function.". Arch. Biochem. Biophys. 519 (2): 131–43. doi:10.1016/j.abb.2011.11.020. PMC 3298769. PMID 22182754. 
  • Biochemistry, Champe, P.C., Harvey, R.A., Ferrier, D.R., 3rd ed., 2005.