 Duodenal cytochrome B

Duodenal cytochrome B (Dcytb) also known as cytochrome b reductase 1 is an enzyme that in humans is encoded by the CYBRD1 gene.Dcytb CYBRD1 was first identified as a ferric reductase enzyme which catalyzes the reduction of Fe3+ to Fe2+ required for dietary iron absorption in the duodenum of mammals.