9bvr

Structural highlights

Disease

VKGC_HUMAN Pseudoxanthoma elasticum-like skin manifestations with retinitis pigmentosa;Hereditary combined deficiency of vitamin K-dependent clotting factors;Body skin hyperlaxity due to vitamin K-dependent coagulation factor deficiency. The disease is caused by variants affecting the gene represented in this entry. The disease is caused by variants affecting the gene represented in this entry.

Function

VKGC_HUMAN Mediates the vitamin K-dependent carboxylation of glutamate residues to calcium-binding gamma-carboxyglutamate (Gla) residues with the concomitant conversion of the reduced hydroquinone form of vitamin K to vitamin K epoxide (PubMed:17073445). Catalyzes gamma-carboxylation of various proteins, such as blood coagulation factors (F2, F7, F9 and F10), osteocalcin (BGLAP) or matrix Gla protein (MGP) (PubMed:17073445).^[1]

References

1. ↑ Rishavy MA, Hallgren KW, Yakubenko AV, Shtofman RL, Runge KW, Berkner KL. Brønsted analysis reveals Lys218 as the carboxylase active site base that deprotonates vitamin K hydroquinone to initiate vitamin K-dependent protein carboxylation. Biochemistry. 2006 Nov 7;45(44):13239-48. PMID:17073445 doi:10.1021/bi0609523