Myo2p, a class V myosin in budding yeast, associates with a large ribonucleic acid-protein complex that contains mRNAs and subunits of the RNA-processing body

Wakam Chang, Rania F. Zaarour, Samara Reck-Peterson, John Rinn, Robert H. Singer, Michael Snyder, Peter Novick, Mark S. Mooseker

Research output: Contribution to journalArticle

21 Scopus citations

Abstract

Myo2p is an essential class V myosin in budding yeast with several identified functions in organelle trafficking and spindle orientation. The present study demonstrates that Myo2p is a component of a large RNA-containing complex (Myo2p-RNP) that is distinct from polysomes based on sedimentation analysis and lack of ribosomal subunits in the Myo2p-RNP. Microarray analysis of RNAs that coimmunoprecipitate with Myo2p revealed the presence of a large number of mRNAs in this complex. The Myo2p-RNA complex is in part composed of the RNA processing body (P-body) based on coprecipitation with P-body protein subunits and partial colocalization of Myo2p with P-bodies. P-body disassembly is delayed in the motor mutant, myo2-66, indicating that Myo2p may facilitate the release of mRNAs from the P-body. Published by Cold Spring Harbor Laboratory Press.

Original languageEnglish (US)
Pages (from-to)491-502
Number of pages12
JournalRNA
Volume14
Issue number3
DOIs
StatePublished - Mar 1 2008

Keywords

  • Myosin V
  • P-body
  • RNP
  • Saccharomyces cerevisiae
  • Unconventional myosin

ASJC Scopus subject areas

  • Molecular Biology

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