Cohesin subunit SMC1 associates with mitotic microtubules at the spindle pole
Open Access
- 7 October 2008
- journal article
- research article
- Published by Proceedings of the National Academy of Sciences in Proceedings of the National Academy of Sciences of the United States of America
- Vol. 105 (40), 15441-15445
- https://doi.org/10.1073/pnas.0807660105
Abstract
Accurate mitotic chromosome segregation depends on the formation of a microtubule-based bipolar spindle apparatus. We report that the cohesin subunit structural maintenance of chromosomes subunit 1 (SMC1) is recruited to microtubule-bound RNA export factor 1 (Rae1) at the mitotic spindle pole. We locate the Rae1-binding site to a 21-residue-long region, SMC1947-967 and provide several lines of evidence that phosphorylation of Ser957 and Ser966 of SMC1 stimulates binding to Rae1. Imbalances in these assembly pathways caused formation of multipolar spindles. Our data suggest that cohesin's known bundling function for chromatids in mitotic and interphase cells extends to microtubules at the spindle pole.This publication has 29 references indexed in Scilit:
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