, Volume 32, Issue 1, pp 119–123 | Cite as

Changes in relative mobility of pancreatic amylase variants in isoelectric focusing

  • Jürgen Tomiuk
  • Lars Sommer Jermiin
Short Communication


Using isoelectric focusing with one ampholytic solution, double- and single-banded amylase phenotypes were found in a sample of rhesus monkeys,Macaca mulatta. When applying different ampholytic solutions, these variants were shown to change their position relative to each other. Single-banded phenotypes showed either a position corresponding to one of the bands of the double-banded phenotype or to an intermediate one. Family studies, however, suggested that the differences between the observed patterns were not caused by genetic differences. This discloses a problem with respect to the interpretation of electrophoretic data, i.e. bands with different positions produced by isoelectric focusing may not necessarily represent genetic differences.

Key Words

Macaca mulatta Amylase Isoelectric focusing Unstable mobility 


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Copyright information

© Japan Monkey Centre 1991

Authors and Affiliations

  • Jürgen Tomiuk
    • 1
  • Lars Sommer Jermiin
    • 1
  1. 1.University of AarhusDenmark

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