Quinone oxidoreductase is an enzyme that in humans is encoded by the CRYZgene.[5]
Crystallins are separated into two classes: taxon-specific, or enzyme, and ubiquitous. The latter class constitutes the major proteins of vertebrate eye lens and maintains the transparency and refractive index of the lens. The former class is also called phylogenetically-restricted crystallins. This gene encodes a taxon-specific crystallin protein which has NADPH-dependent quinone reductase activity distinct from other known quinone reductases. It lacks alcohol dehydrogenase activity although by similarity it is considered a member of the zinc-containing alcohol dehydrogenase family. Unlike other mammalian species, in humans, lens expression is low. One pseudogene is known to exist.[5]
Heinzmann C, Kojis TL, Gonzalez P, et al. (1995). "Assignment of the zeta-crystallin gene (CRYZ) to human chromosome 1p22-p31 and identification of restriction fragment length polymorphisms". Genomics. 23 (2): 403–7. doi:10.1006/geno.1994.1516. PMID7835889.
Maruyama K, Sugano S (1994). "Oligo-capping: a simple method to replace the cap structure of eukaryotic mRNAs with oligoribonucleotides". Gene. 138 (1–2): 171–4. doi:10.1016/0378-1119(94)90802-8. PMID8125298.
Suzuki Y, Yoshitomo-Nakagawa K, Maruyama K, et al. (1997). "Construction and characterization of a full length-enriched and a 5'-end-enriched cDNA library". Gene. 200 (1–2): 149–56. doi:10.1016/S0378-1119(97)00411-3. PMID9373149.
Wang W, Liu LQ, Higuchi CM, Chen H (1998). "Induction of NADPH:quinone reductase by dietary phytoestrogens in colonic Colo205 cells". Biochem. Pharmacol. 56 (2): 189–95. doi:10.1016/S0006-2952(98)00141-5. PMID9698072.
