Yeast Sec proteins interact with polypeptides traversing the endoplasmic reticulum membrane

Anne Müsch, Martin Wiedmann, Tom A. Rapoport

Research output: Contribution to journalArticle

88 Scopus citations

Abstract

We show by photocross-linking that nascent secretory proteins, during their passage through the endoplasmic reticulum membrane of S. cerevisiae, are in physical contact with Sec61p and Sec62p, two genetically identified membrane proteins that are essential for in vivo translocation. Sec61p seems to be in continuous contact, whereas Sec62p is involved only transiently. Translocation comprises both ATP-dependent and -independent phases of interaction with the Sec proteins. The results suggest a direct role of the Sec proteins in translocation.

Original languageEnglish (US)
Pages (from-to)343-352
Number of pages10
JournalCell
Volume69
Issue number2
DOIs
StatePublished - Apr 17 1992
Externally publishedYes

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)

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