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A comparison of membrane-bound enzymes of the isolated brush border plasma membranes of the cestodes Hymenolepis diminuta and H. microstoma

Published online by Cambridge University Press:  06 April 2009

P. W. Pappas  and
Elizabeth M. Narcisi
P. W. Pappas
Affiliation:
Department of Zoology, The Ohio State University, Columbus, Ohio 43210
Elizabeth M. Narcisi
Affiliation:
Department of Zoology, The Ohio State University, Columbus, Ohio 43210
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Summary

Preparations of isolated brush border plasma membrane of Hymenolepis diminuta and H. microstoma possess the following enzymatic activities: alkaline phosphohydrolase (E.C. 3.1.3.1); Type I phosphodiesterase (E.C. 3.1.4.1); ribonuclease (E.C. 3.1.4.22); adenosine triphosphatase (E.C. 3.6.1.3); and 5′-nucleotidase (E.C. 3.1.3.5). The following enzymatic activities could not be demonstrated in either membrane preparation: Type II phosphodiesterase (E.C. 3.1.4.18); cyclic adenosine-3′, 5′-monophosphate phosphodiesterase (E.C. 3.1.4.17); leucine aminopeptidase (E.C. 3.4.11.1); maltase (α-glucosidase; E.C. 3.2.1.20); and lactase (β-galactosidase; E.C. 3.2.1.23). These data generally agree with those of previous studies in which similar membrane-bound enzymes were demonstrated in intact (living) worms.

Type
Research Article
Information
Parasitology , Volume 84 , Issue 2 , April 1982 , pp. 391 - 396
Copyright
Copyright © Cambridge University Press 1982

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