The spectrin-based membrane skeleton as a membrane protein-sorting machine

Kenneth A Beck, W. James Nelson

Research output: Contribution to journalArticle

93 Scopus citations

Abstract

Normal cell function is dependent on the existence of membrane compartments that have unique populations of membrane proteins. Sorting of membrane proteins forms the basis for the biogenesis of distinct membrane compartments. There are many examples of membrane protein-sorting events in cells, but the molecular machinery involved is poorly understood. We discuss characteristics of a putative membrane protein-sorting machine and show that the spectrin-based membrane skeleton conforms to these characteristics. The spectrin-based membrane skeleton is a submembranous, spatially limited, two- dimensional lattice that binds a subset of membrane proteins. These properties allow the membrane skeleton to facilitate the formation of distinct membrane domains and thus reveal its potential as a membrane protein-sorting machine.

Original languageEnglish (US)
JournalAmerican Journal of Physiology - Cell Physiology
Volume270
Issue number5 39-5
StatePublished - May 1996
Externally publishedYes

Keywords

  • cell surface polarity
  • coat proteins
  • cytoskeleton
  • Golgi
  • organelle biogenesis
  • protein retention
  • protein trafficking
  • sodium-potassium adenosinetriphosphatase

ASJC Scopus subject areas

  • Clinical Biochemistry
  • Cell Biology
  • Physiology
  • Physiology (medical)

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