Biochemical Genetics

, Volume 30, Issue 5–6, pp 247–255 | Cite as

Peptidase B polymorphism in cattle erythrocytes

  • Silvia N. Del Lama
  • M. A. Del Lama
  • M. A. Mestriner
  • N. Mortari


Starch gel electrophoresis and histochemical staining withl-leucylglycyl-glycine revealed genetic polymorphism in peptidase B in cattle erythrocytes. Genetic analysis of 164 full families indicated that the three phenotypes observed are the product of an autosomal locus with two codominant alleles,PepB1 andPep B2, A sample consisting of 2630 individuals representing 5 Zebu, 13 European, and 2 crossbred breeds was studied. This polymorphism was observed in all Zebu and crossbred breeds. The frequency of thePep B1 allele was 0.89, 0.83, 0.59, 0.82 and 0.62 in the Nellore, Gyr, Guzerat, Indubrazil, and Tabapuan breeds, respectively. ThePep B2 allele appears to be fixed in the European breeds, except Marchigiana and Chianina.

Key words

peptidase B biochemical polymorphism cattle breeds gene frequencies isozymes 


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Copyright information

© Plenum Publishing Corporation 1992

Authors and Affiliations

  • Silvia N. Del Lama
    • 1
  • M. A. Del Lama
    • 1
  • M. A. Mestriner
    • 1
  • N. Mortari
    • 1
  1. 1.Departamento de Genética e EvolucãoUniversidade Federal de São CarlosSão Carlos, SPBrasil

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