Biochemical Genetics

, Volume 8, Issue 2, pp 187–203 | Cite as

Intraspecific variation in the lens proteins

  • T. H. Day
  • R. M. Clayton
Article
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Revised:

Abstract

A review of the literature indicates that intraspecific variation among the lens proteins (crystallins) is almost invariably quantitative rather than qualitative. Lens extracts were examined from inbred strains of the laboratory mouse, rat, and guinea pig and from domestic breeds of sheep. Differences in the mobilities of protein bands after electrophoresis in polyacrylamide gels were never found to be greater than the variation observed when a sample was repeatedly subjected to electrophoresis. Differences, however, were observed between widely separated populations of the bank vole (Clethrionomys glareolus). In bank voles and mice, there were variations in the intensities of bands. Electrophoresis of extracts in the presence of 6 m urea indicated that there were no major differences between six mouse strains in the subunits constituting their α- and β-crystallins. More detailed examination of α-crystallins from two mouse strains by isoelectric focusing and amino acid analysis supported this conclusion.

Keywords

Urea Protein Band Mouse Strain Detailed Examination Amino Acid Analysis 
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Copyright information

© Plenum Publishing Corporation 1973

Authors and Affiliations

  • T. H. Day
    • 1
  • R. M. Clayton
    • 1
  1. 1.Institute of Animal GeneticsEdinburgh UniversityEdinburghUK

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