Methemoglobin reductase, cytochrome

Methemoglobin reductase, cytochrome bt reductase and, 164-165 Methionine residues glyceraldehyde-3-phosphate dehydrogenase, 11... 

The iron of Hb must be maintained in the ferrous state ferric iron is reduced to the ferrous state by the action of an NADH-dependent methemoglobin reductase system involving cytochrome reductase and cytochrome b. ... 

Methemoglobinemia has long been associated with the absence of an NADH-linked diaphorase 362, 363). However, flavoproteins isolated from the red cell were never sufficiently active to account for the methemoglobin reductase activity calculated to be necessary. It has now been shown that a methemoglobin reductase system of high activity is composed of soluble forms of cytochrome bj reductase and cytochrome bs... 

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