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Induction of a human carbonyl reductase gene located on chromosome 21.

Carbonyl reductase (EC 1.1.1.184) belongs to the group of enzymes called aldo-keto reductases. It is a NADPH-dependent cytosolic protein with specificity for many carbonyl compounds including the antitumor anthracycline antibiotics, daunorubicin and doxorubicin. Human carbonyl reductase was cloned from a breast cancer cell line (MCF-7). The cDNA clone contained 1219 base paires with an open reading frame corresponding to 277 amino acids encoding a protein of Mr 30,375. Southern analysis of genomic DNA digested with several restriction enzymes and analyzed by hybridization with a labeled cDNA probe indicated that carbonyl reductase is probably coded by a single gene and does not belong to a family of structurally similar enzymes. Southern analysis of 17 mouse/human somatic cell hybrids showed that carbonyl reductase is located on chromosome 21. Carbonyl reductase mRNA could be induced 3-4-fold in 24 h with 10 microM 2,(3)-t-butyl-4-hydroxyanisole (BHA), beta-naphthoflavone or Sudan 1.[1]

References

  1. Induction of a human carbonyl reductase gene located on chromosome 21. Forrest, G.L., Akman, S., Krutzik, S., Paxton, R.J., Sparkes, R.S., Doroshow, J., Felsted, R.L., Glover, C.J., Mohandas, T., Bachur, N.R. Biochim. Biophys. Acta (1990) [Pubmed]
 
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