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The spindle assembly checkpoint (SAC) is required to block sister chromatid separation until all chromosomes are properly attached to the mitotic apparatus. The SAC prevents cells from entering anaphase by inhibiting the ubiquitylation of cyclin B1 and securin by the anaphase promoting complex/cyclosome (APC/C) ubiquitin ligase. The target of the SAC is the(More)
The potential for modulation of growth factor signaling by endocytic trafficking of receptors is well recognized, but the underlying mechanisms are poorly understood. We examined the regulation of fibroblast growth factor (FGF) signaling by Sprouty related with EVH1 (Ena/VASP homology 1) domain (Spred), a family of signaling inhibitors with proposed(More)
The spindle assembly checkpoint (SAC) is responsible for blocking cells in mitosis in the presence of unattached kinetochores. A substantial body of work has identified many of the players in this checkpoint and shown that they target the Cdc20 protein to prevent the ubiqui-tylation of cyclin B and securin by the anaphase promoting complex/cyclosome(More)
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