Pronunciation: fer'i-he-mo-pro'ten, fer'e-
an enzyme catalyzing the reduction of 2 ferricytochrome by NADPH to 2 ferrocytochrome; the physiologic acceptor is probably cytochrome P-450; thus, it has a role in steroid hydroxylations.
Synonym(s): cytochrome reductase
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Examples: glitazone, GI cocktail, etc.