Prenyltransferase that mediates the formation of menaquinone-4 (MK-4) and coenzyme Q10. MK-4 is a vitamin K2 isoform required for endothelial cell development. Mediates the conversion of phylloquinone (PK) into MK-4, probably by cleaving the side chain of phylloquinone (PK) to release 2-methyl-1,4-naphthoquinone (menadione; K3) and then prenylating it with geranylgeranyl pyrophosphate (GGPP) to form MK-4. Also plays a role in cardiovascular development independently of MK-4 biosynthesis, by acting as a coenzyme Q10 biosynthetic enzyme: coenzyme Q10, also named ubiquinone, plays an important antioxidant role in the cardiovascular system. Mediates biosynthesis of coenzyme Q10 in the Golgi membrane, leading to protect cardiovascular tissues from nos3/eNOS-dependent oxidative stress.

Belongs to the UbiA prenyltransferase family.

336 amino acids

MQEMKPAALSGSNGLNGASGSSVRVPCSRLSRAGRMALDLQSKCAAYVLALRPWSFSASLTPVALGSALAYKLEGSVDLLLLLVCAVAVLLVHGAGNLVNTYYDFSKGIDHKKSDDRTLVDQILKPQDVVMFGAVLYSAGCLCATLLYFLSSLKLEHLALIYFGGLSSSFLYTGGIGLKYVALGDVVILITFGPLAVMFAHAVQVGYLSVLPLVYAVPLALNTEAILHSNNTRDMDSDKQAGIVTLAILLGPTLSYVIYNLLLFVPYLLFCILATRYTISMALPLLTLPMAFPLERQFRCRCYAKIPQKTAKLNLLMGLFYVFGIILAPQGSLPLL

36.2 kDa

(Note: Representative image - actual molecular weight may vary depending on tag type and expression method)

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