This subproject is one of many research subprojects utilizing the resources provided by a Center grant funded by NIH/NCRR. The subproject and investigator (PI) may have received primary funding from another NIH source, and thus could be represented in other CRISP entries. The institution listed is for the Center, which is not necessarily the institution for the investigator. The spindle checkpoint regulates the metaphase-anaphase transition, and aims to prevent aneuploidy.It responds to defective kinetochore-microtubule interactions by delaying sister chromatid separation and anaphase onset. In so doing it prevents chromosome mis-segregation and the generation of aneuploidy. Aneuploidy is lethal in single-celled organisms such as fission yeast, and is one of the hallmarks of cancer in humans. We are using fission yeast as a model system to study the in vivo dynamics and interactions of the Mad and Bub checkpoint proteins.
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