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Journal of Clinical Endocrinology & Metabolism, Vol 62, 424-428, Copyright © 1986 by Endocrine Society

ARTICLES

Monoclonal antibodies as molecular probes to study structural heterogeneity between human and animal renins and other aspartyl proteinases

VJ Dzau, M Mudgett-Hunter and E Haber

Monoclonal antibodies may be helpful in comparing the structural homology of renins of various animal species as well as other aspartyl proteinases. We obtained four hybridoma lines secreting monoclonal antibodies that inhibited 3 Goldblatt mU human renin enzymatic activity with apparent IC50 of 1.1 X 10(-6)-4 X 10(-8) M. Each antibody was specific for human renin and did not cross-react either with other proteins tested nor with renins of other species in an immunoradiometric assay. These antibodies did not inhibit the enzymatic activities of nonprimate renins or nonrenin aspartyl proteinases tested. These data indicate that certain structural determinants of human renin activity may be uniquely different from those of nonprimate renins or nonrenin aspartyl proteinases.




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Copyright © 1986 by The Endocrine Society