August 1965
Volume 4, Issue 4
Articles  |   August 1965
Crystalline Lactic Dehydrogenase of the Lens
Author Affiliations
  • W. L. FOWLKS
    Department of Ophthalmology, University of Minnesota, Minneapolis, Minn.
Investigative Ophthalmology & Visual Science August 1965, Vol.4, 611-618. doi:
  • Views
  • PDF
  • Share
  • Tools
    • Alerts
      This feature is available to authenticated users only.
      Sign In or Create an Account ×
    • Get Citation

      W. L. FOWLKS; Crystalline Lactic Dehydrogenase of the Lens. Invest. Ophthalmol. Vis. Sci. 1965;4(4):611-618. doi:

      Download citation file:

      © ARVO (1962-2015); The Authors (2016-present)

  • Supplements
This content is PDF only. Please click on the PDF icon to access.

A protein with low LDH activity compared to recrystallized muscle LDH and one which appeared to be homogeneous by all available tests for protein homogeneity has been obtained in crystalline form from bovine and rabbit lenses. These lens LDH preparations appeared to be identical immunologically in the other mammalian species examined. The bovine lens LDH had half the molecular weight of LDH isozymes isolated from bovine heart. The LDH activity of bovine lenses in certain chemical tests was found to be both similar and different when compared to bovine heart LDH. This also was the situation with rabbit lens LDH compared with a commercial preparation of rabbit muscle LDH. During a study of the reaction of bovine lens LDH with metallic salts, ZnSO4 and HgCl2 in particular, it was noted that the LDH activity became soluble in 2.6M ammonium sulfate, became less stable, and disappeared as a distinct band on disc electropherograms in acrylamide gel. The chemistry of this transformation in the solubility of LDH suggests that a metal chelate bond was broken by the treatment concomitant with the appearance of a quite unstable low molecular weight fragment with increased LDH activity. Confirmation of this impression awaits success of efforts to isolate such a fragment.


This PDF is available to Subscribers Only

Sign in or purchase a subscription to access this content. ×

You must be signed into an individual account to use this feature.