glutathione reductase

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glutathione reductase Enzyme in red blood cells for which flavin adenine dinucleotide (derived from vitamin B2) is the cofactor. Activation of this enzyme in vitro by added cofactor provides a means of assessing vitamin B2 nutritional status, sometimes known as the erythrocyte glutathione reductase activation coefficient (EGRac) test. See also enzyme activation assays.