Protein Family Models

Vitamin K epoxide reductase (VKOR) recycles reduced vitamin K, which is used subsequently as a co-factor in the gamma-carboxylation of glutamic acid residues in blood coagulation enzymes. VKORC1 is a member of a large family of predicted enzymes that are present in vertebrates, Drosophila, plants, bacteria and archaea [1]. 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]. [1]. 15276181. Vitamin K epoxide reductase: homology, active site and catalytic mechanism. Goodstadt L, Ponting CP;. Trends Biochem Sci 2004;29:289-292. (from Pfam)

Date:

2024-10-16

vitamin K epoxide reductase (VKOR) family protein similar to human VKOR complex subunit 1 (VKORC1), an integral membrane protein and the catalytic subunit of the VKOR complex that reduces inactive vitamin K 2,3-epoxide to active vitamin K

Date:

2018-09-12