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  • Title: Low molecular weight angiotensin I converting enzyme from rat lung.
    Author: Lanzillo JJ, Fanburg BL.
    Journal: Biochim Biophys Acta; 1977 Mar 28; 491(1):339-44. PubMed ID: 191087.
    Abstract:
    A low molecular weight angiotensin I converting enzyme (light angiotensin enzyme) was isolated from a homogenate of rat lung subjected to dialysis against sodium acetate at pH 4.8. This enzyme has a molecular weight of 84 000 on Sephadex G-200 and a molecular weight of 91 000 on SDS-poly-acrylamide gel as compared with a molecular weight of 139 000 for angiotensin I converting enzyme on SDS-polyacrylamide. Light angiotensin enzyme was activated by NaCl and inhibited by EDTA, angiotensin II, and bradykinin potentiating factor nonapeptide. Light angiotensin enzyme cross-reacted with antibody prepared against angiotensin I converting enzyme and stained with periodic acid-Schiff reagent as a glycoprotein. The evidence suggests that light angiotensin enzyme is a fragment of the higher molecular weight enzyme.
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