Journal
MOLECULAR CELL
Volume 18, Issue 2, Pages 185-200Publisher
CELL PRESS
DOI: 10.1016/j.molcel.2005.03.017
Keywords
-
Categories
Funding
- NIGMS NIH HHS [GM39023] Funding Source: Medline
Ask authors/readers for more resources
We have identified a regulator of sister chromatid cohesion in a screen for cell cycle-controlled proteins. This 35 kDa protein is degraded through anaphase-promoting complex (APC)-dependent ubiquitination in G1. The protein is nuclear in interphase cells, dispersed from the chromatin in mitosis, and interacts with the cohesin complex. In Xenopus embryos, overexpression of the protein causes failure to resolve and segregate sister chromatids in mitosis and an increase in the level of cohesin associated with metaphase chromosomes. In cultured cells, depletion of the protein causes mitotic arrest and complete failure of sister chromatid cohesion. This protein is thus an essential, cell cycle-dependent mediator of sister chromatid cohesion. Based on sequence analysis, this protein has no apparent orthologs outside of the vertebrates. We speculate that the protein, which we have named sororin, regulates the ability of the cohesin complex to mediate sister chromatid cohesion, perhaps by altering the nature of the interaction of cohesin with the chromosomes.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available