Apr 25, 1990

Molecular cloning and sequence analysis of a cDNA encoding a porcine kidney renin-binding protein

The Journal of Biological Chemistry
H InoueY Miyake


A complementary DNA encoding a renin-binding protein (RnBP) has been isolated from a porcine kidney cDNA library by immunological screening of in vitro translation products from the cDNAs. Analysis of the nucleotide sequence of the clone revealed a 1,342-nucleotide sequence with a 5'-terminal untranslated region of 52 nucleotides, an open reading frame of 1,206 nucleotides that encodes 402 amino acids, and a 3'-terminal untranslated region of 84 nucleotides that contains the polyadenylation signal sequence, AATAAA. The predicted amino acid sequence contains no hydrophobic amino-terminal sequence and does not show significant homology to those of other identified proteins. The in vitro translated RnBP was found to have the same molecular weight, 42,000, as that of the purified RnBP from porcine kidney on sodium dodecyl sulfate-polyacrylamide gel electrophoresis and it formed a complex with renin purified from porcine kidney, which indicates that the cDNA encodes a functional RnBP without a propeptide sequence. The RnBP cDNA probe hybridized to a 1.5-kilobase mRNA in kidney, liver, adrenal, and pituitary glands, the amount being much greater in kidney than in the other tissues. Southern blot analysis showed the presence of a uniq...Continue Reading

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Mentioned in this Paper

Untranslated Regions
Amino Acids, I.V. solution additive
Proteins, Recombinant DNA
Protein Biosynthesis
Sequence Analysis
Carbohydrate Epimerases
Renin Measurement
Protein Conformation

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