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 |
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Authors: | Chang Wakam Zaarour Rania F Reck-Peterson Samara Rinn John Singer Robert H Snyder Michael Novick Peter Mooseker Mark S |
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Affiliation: | Department of Molecular, Cellular and Developmental Biology, Yale University, New Haven, Connecticut 06520, USA. |
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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. |
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Keywords: | RNP P-body unconventional myosin myosin V Saccharomyces cerevisiae |
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