摘要：NADP(H)-dependent retinol dehydrogenase/reductase (NRDR) was an important retinoic acid synthase, w...NADP(H)-dependent retinol dehydrogenase/reductase (NRDR) was an important retinoic acid synthase, which was first purified from rabbit liver in 1997. In order to study the function of the NRDR gene,the full-length cDNA of bovine NRDR was cloned. According to the conserved sequences of human, mouse and rabbit NRDR cDNA, a pair of primers was designed to amplify a 294 bp DNA fragment of bovine liver NRDR, and then the full-length of NRDR cDNA (AF487454) was cloned by using 3′-RACE and 5′-RACE. All the cloned NRDR proteins consist of 260 amino acid residues and showed high identity among them. The tri-peptide of human, mouse and rabbit NRDR C-end was -SRL and that of bovine NRDR C-end was -SHL, but both were considered to be peroxisomal target signal 1 (PTS1). RT-PCR demonstrated that NRDR gene was expressed in liver, heart, lung, kidney, stomach and intestine, and was not found in pancreas, muscle, artery and skin. The full-length bovine NRDR cDNA has been successfully cloned and the sequence was analyzed. It provided a reliable foundation to investigate the biological function of this protein.显示全部
