Vitamin K epoxide reductase
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| VKOR | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Identifiers | |||||||||
| Symbol | VKOR | ||||||||
| Pfam | PF07884 | ||||||||
| InterPro | IPR012932 | ||||||||
| OPM superfamily | 18 | ||||||||
| OPM protein | 3kp9 | ||||||||
| |||||||||
| vitamin K epoxide reductase complex, subunit 1 | |
|---|---|
| Identifiers | |
| Symbol | VKORC1 |
| Alt. symbols | VKCFD2 |
| Entrez | 79001 |
| HUGO | 23663 |
| RefSeq | NM_024006 |
| Other data | |
| Locus | Chr. 16 p11.2 |
Vitamin K epoxide reductase (VKOR) is an enzyme (EC 1.17.4.4) that reduces vitamin K after it has been oxidised in the carboxylation of glutamic acid residues in blood coagulation enzymes. VKORC is a member of a large family of predicted enzymes that are present in vertebrates, Drosophila, plants, bacteria and archaea.[1] Its C1 subunit (VKORC1) is the target of anticoagulant warfarin.[2][3] Four cysteine residues and one residue, which is either serine or threonine, are identified as likely active-site residues.[1] In some plant and bacterial homologues, the VKORC1 homologous domain is fused with domains of the thioredoxin family of oxidoreductases.[1]
References
- ↑ 1.0 1.1 1.2 Goodstadt L, Ponting CP (June 2004). "Vitamin K epoxide reductase: homology, active site and catalytic mechanism". Trends Biochem. Sci. 29 (6): 289–92. doi:10.1016/j.tibs.2004.04.004. PMID 15276181.
- ↑ Li, T; Chang, CY; Jin, DY; Lin, PJ; Khvorova, A; Stafford, DW (2004). "Identification of the gene for vitamin K epoxide reductase". Nature. 427 (6974): 541–4. doi:10.1038/nature02254. PMID 14765195.
- ↑ Rost, S; Fregin, A; Ivaskevicius, V; Conzelmann, E; Hortnagel, K; Pelz, HJ; Lappegard, K; Seifried, E; et al. (2004). "VKORC1 cause warfarin resistance and multiple coagulation factor deficiency type 2". Nature. 427 (6974): 537–41. doi:10.1038/nature02214. PMID 14765194.