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. 1972 Jun 1;53(3):777–787. doi: 10.1083/jcb.53.3.777

TRANSLATIONAL MOBILITY OF THE MEMBRANE INTERCALATED PARTICLES OF HUMAN ERYTHROCYTE GHOSTS

pH-Dependent, Reversible Aggregation

Pedro Pinto da Silva 1
PMCID: PMC2108782  PMID: 4554989

Abstract

This paper demonstrates the translational movement along the plane of the human erythrocyte ghost of the membrane particles exposed by freeze-fracture. The membrane particles can be aggregated by incubation of the ghosts in media with a pH in the vicinity of 5 5 or 3 5. The particles are disaggregated in neutral and alkaline media (pH 9 5) and also at pH 4.5 Aggregation of the particles at pH 5.5 is reversible, prevented by prefixation in glutaraldehyde and by media of high ionic strength. Particle aggregation occurs within 2–4 min. These results are consistent with the concept that the erythrocyte ghost membrane is a planar fluid domain formed by a bilayer membrane continuum which is interrupted by localized, yet mobile, proteic intercalations.

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Selected References

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