A spectrin membrane skeleton of the Golgi complex

Kenneth A Beck, W. James Nelson

Research output: Contribution to journalArticle

55 Scopus citations

Abstract

The existence of a Golgi-localized membrane cytoskeleton has been revealed by the identification of two major components of the spectrin membrane skeleton, spectrin and ankyrin, that associate with the Golgi complex. Golgi spectrin was identified with an antibody specific for the β-subunit of the erythroid isoform of spectrin (β1Σ1). This antibody recognizes a 220 kDa polypeptide that localizes to discrete regions of the Golgi complex and associates with Golgi membranes in a Brefeldin A sensitive manner. Two isoforms of Golgi ankyrin have been identified: a 119 kDa form (Ank(G119)) which represents a truncated, alternatively spliced isoform of a recently cloned novel ankyrin of the nervous system Ank(G), and a larger 195 kDa ankyrin (Ank195) that cross-reacts with antibodies to erythrocyte ankyrin. A Golgi localized membrane skeleton composed of these unique membrane skeleton isoforms could serve a variety of important functions, including the maintenance of Golgi structural organization and the formation of discrete membrane domains within Golgi compartments. Copyright (C) 1998 Elsevier Science B.V.

Original languageEnglish (US)
Pages (from-to)153-160
Number of pages8
JournalBiochimica et Biophysica Acta - Molecular Cell Research
Volume1404
Issue number1-2
DOIs
StatePublished - Aug 14 1998

Keywords

  • Cytoskeleton
  • Golgi
  • Membrane
  • Protein sorting
  • Spectrin

ASJC Scopus subject areas

  • Cell Biology
  • Molecular Biology
  • Biophysics

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