alexa Mouse angiotensin-converting enzyme is a protein composed of two homologous domains.
Pharmaceutical Sciences

Pharmaceutical Sciences

Pharmaceutica Analytica Acta

Author(s): Bernstein KE, Martin BM, Edwards AS, Bernstein EA

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Abstract Angiotensin-converting enzyme (ACE) is a dipeptidyl carboxypeptidase that converts angiotensin I into the potent vasoconstrictor angiotensin II. We have used cDNA and genomic sequences to assemble a composite cDNA, ACE.315, encoding the entire amino acid sequence of mouse converting enzyme. ACE.315 contains 4838 base pairs and encodes a protein of 1278 amino acids (147.4 kDa) after removal of a 34-amino acid signal peptide. Within the protein, there are two large areas of homologous sequence, each containing a potential Zn-binding region and catalytic site. These homologous regions are approximately half the size of the whole ACE protein and suggest that the modern ACE gene is the duplicated product of a precursor gene. Mouse ACE is 83\% homologous to human ACE in both nucleic acid and amino acid sequence, and like human ACE, contains a hydrophobic region in the carboxyl terminus that probably anchors the enzyme to the cell membrane (Soubrier, F., Alhenc-Gelas, F., Hubert, C., Allegrini, J., John, M., Tregear, G., and Corvol, P. (1988) Proc. Natl. Acad. Sci. U.S.A. 85, 9386-9390). Northern analysis of mouse kidney, lung, and testis RNA demonstrates that the testicular isozyme of ACE is encoded by a single, smaller RNA (2500 bases) than the two message sizes found in kidney or lung (4900 and 4150 bases), and that this testicular RNA hybridizes to the 3' portion of ACE.315.
This article was published in J Biol Chem and referenced in Pharmaceutica Analytica Acta

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