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Title: Molecular cloning of cDNAs of human liver and placenta NADH-cytochrome b/sub 5/ reductase

Journal Article · · Proc. Natl. Acad. Sci. U.S.A.; (United States)

A cDNA coding for human liver NADH-cytochrome b/sub 5/ reductase was cloned from a human liver cDNA library constructed in phage lambdagt11. The library was screened by using an affinity-purified rabbit antibody against NADH-cytochrome b/sub 5/ reductase of human erythrocytes. A cDNA about 1.3 kilobase pairs long was isolated. By using the cDNA as a probe, another cDNA (pb/sub 5/R141) of 1817 base pairs was isolated that hybridized with a synthetic oligonucleotide encoding Pro-Asp-Ile-Lys-Tyr-Pro, derived from the amino acid sequence at the amino-terminal region of the enzyme from human erythrocytes. Furthermore, by using the pb/sub 5/R141 as a probe, cDNA clones having more 5' sequence were isolated from a human placenta cDNA library. The amino acid sequences deduced from the nucleotide sequences of these cDNA clones overlapped each other and consisted of a sequence that completely coincides with that of human erythrocytes and a sequence of 19 amino acid residues extended at the amino-terminal side. The latter sequence closely resembles that of the membrane-binding domain of steer liver microsomal enzyme

Research Organization:
Medical College of Oita, Japan
OSTI ID:
5356556
Journal Information:
Proc. Natl. Acad. Sci. U.S.A.; (United States), Vol. 84:11
Country of Publication:
United States
Language:
English