Partial reversible inactivation of enzymes due to binding to the human erythrocyte membrane

Magda Solti, Peter Friedrich

Research output: Contribution to journalArticle

26 Citations (Scopus)

Abstract

Hypotonic human erythrocyte ghosts, devoid of the original glyceraldehyde-3-phosphate dehydrogenase content of the red cell, bind added glyceraldehyde-3-phosphate dehydrogenases, isolated from human erythrocytes, rabbit and pig muscle, as well as rabbit muscle aldolase. There are only slight differences in the affinities towards the various glyceraldehyde-3-phosphate dehydrogenases. On the other hand, glyceraldehyde-3-phosphate dehydrogenases are bound much stronger than aldolase; in an equimolar mixture the former can prevent the binding of the latter, or replace previously bound aldolase at the membrane surface. Binding is always accompanied by the partial inactivation of enzymes, which can be reverted by desorption. Unwashed ghosts rich in hemoglobin seem to have a more pronounced inactivating effect on bound glyceraldehyde-3-phosphate dehydrogenase. In isotonic media ghosts, whether white or unwashed, reseal and do not interact with the enzymes.

Original languageEnglish
Pages (from-to)145-152
Number of pages8
JournalMolecular and Cellular Biochemistry
Volume10
Issue number3
DOIs
Publication statusPublished - Feb 1 1976

ASJC Scopus subject areas

  • Molecular Biology
  • Clinical Biochemistry
  • Cell Biology

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