title: Rat liver NAD(P)H: quinone reductase nucleotide sequence analysis of a quinone reductase cDNA clone and prediction of the amino acid sequence of the corresponding protein.
abstract: We have determined the nucleotide sequence of a cDNA clone, pDTD55, complementary to rat liver quinone reductase mRNA (Williams, J.B., Lu, A.Y.H., Cameron, R.G., and Pickett, C.B. (1986) J. Biol. Chem. 261, 5524-5528). The cDNA clone contains an open reading frame of 759 nucleotides encoding a polypeptide comprised of 253 amino acids with a Mr = 28,564. To verify the predicted amino acid sequence of quinone reductase, we have been able to align the amino acid sequences of a cyanogen bromide digest of the purified enzyme to the sequence deduced from the cDNA clone. A comparison of the quinone reductase sequence with other known flavoenzymes did not reveal a significant degree of amino acid sequence homology. These data suggest that the quinone reductase gene has evolved independently from genes encoding other flavoenzymes.
mesh_terms: D000595:Amino Acid Sequence; D000818:Animals; D001483:Base Sequence; D003001:Cloning, Molecular; D003488:Cyanogen Bromide; D004247:DNA / Q000378:metabolism*; D005796:Genes; D008099:Liver / Q000201:enzymology*; D008970:Molecular Weight; D016660:NAD(P)H Dehydrogenase (Quinone); D011808:Quinone Reductases / Q000235:genetics*; D051381:Rats
chemical_list: D004247:DNA; D016660:NAD(P)H Dehydrogenase (Quinone); D011808:Quinone Reductases; D003488:Cyanogen Bromide