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Peptidase lsozymes of the leopard frogRana pipiens: Properties and genetics

✍ Scribed by Wright, David A. ;Richards, Christina M.

Publisher
John Wiley and Sons
Year
1982
Tongue
English
Weight
918 KB
Volume
221
Category
Article
ISSN
0022-104X

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✦ Synopsis

Abstract

The substrate specificity of five peptidases in tissues of the leopard frog, Rana pipiens, corresponds to mammalian peptidases (Pep) A, B, C, D, and S. The inheritance of electrophoretic variants of Pep A, B, C, and D verifies the genetic basis of the variants and the control of the enzymes by separate genetic loci. Electrophoretic patterns of heterozygotes suggest that Pep A, B, and D are dimers, whereas Pep C has a monomer structure. The tissue distribution and developmental patterns suggest that frog peptidases are subject to cellular regulation. Tests of genetic linkage show independent assortment for Pep A and Pep C and for Pep C and Pep D. Pep C is closely linked to superoxide dismutase‐1 (6.87% recommbination), and Pep B is linked to mannose phosphate isomerase (30.4% recommbination).

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