TRIP13 Regulates Both the Activation and Inactivation of the Spindle-Assembly Checkpoint
Summary: Biochemical studies have indicated that p31comet and TRIP13 are critical for inactivating MAD2. To address unequivocally whether p31comet and TRIP13 are required for mitotic exit at the cellular level, their genes were ablated either ...
Hoi Tang Ma, Randy Yat Choi Poon
doaj +1 more source
Mammalian kinetochores count attached microtubules in a sensitive and switch-like manner. [PDF]
The spindle assembly checkpoint (SAC) prevents anaphase until all kinetochores attach to the spindle. Each mammalian kinetochore binds many microtubules, but how many attached microtubules are required to turn off the checkpoint, and how the kinetochore ...
Akiyoshi +80 more
core +1 more source
Spindle assembly checkpoint: the third decade [PDF]
The spindle assembly checkpoint controls cell cycle progression during mitosis, synchronizing it with the attachment of chromosomes to spindle microtubules. After the discovery of themitotic arrest deficient(MAD) andbudding uninhibited by benzymidazole(BUB) genes as crucial checkpoint components in 1991, the second decade of checkpoint studies (2001 ...
openaire +3 more sources
Noise resistance in the spindle assembly checkpoint [PDF]
Genetically identical cells vary in the amount of expressed proteins even when growing under the same conditions. It is not yet clear how cellular information processing copes with such stochastic fluctuations in protein levels. Here we examine the capacity of the spindle assembly checkpoint to buffer temporal fluctuations in the expression of Cdc20, a
Doncic, Andreas +2 more
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MAP kinase meets mitosis: A role for Raf Kinase Inhibitory Protein in spindle checkpoint regulation
Raf Kinase Inhibitory Protein (RKIP) is an evolutionarily conserved protein that functions as a modulator of signaling by the MAP kinase cascade.
Rosner Marsha
doaj +1 more source
Conformational dynamics of the Hop1 HORMA domain reveal a common mechanism with the spindle checkpoint protein Mad2. [PDF]
The HORMA domain is a highly conserved protein-protein interaction module found in eukaryotic signaling proteins including the spindle assembly checkpoint protein Mad2 and the meiotic HORMAD proteins.
Corbett, Kevin D +2 more
core +2 more sources
CENP-F stabilizes kinetochore-microtubule attachments and limits dynein stripping of corona cargoes [PDF]
Accurate chromosome segregation demands efficient capture of microtubules by kinetochores and their conversion to stable bioriented attachments that can congress and then segregate chromosomes.
Allan +80 more
core +1 more source
Loss of APC induces polyploidy as a result of a combination of defects in mitosis and apoptosis [PDF]
Mutations in the adenomatous polyposis coli (APC) tumor suppressor gene initiate a majority of colorectal cancers. Acquisition of chromosomal instability is an early event in these tumors.
Clarke, Alan +9 more
core +5 more sources
Requirement for proteolysis in spindle assembly checkpoint silencing [PDF]
Anaphase initiation requires ubiquitin-dependent proteolysis of crucial substrates through activation of the ubiquitin ligase Anaphase promoting Complex/Cyclosome (ApC/C) in association with its coactivator Cdc20. To prevent chromosome segregation errors, effector proteins of a safeguard mechanism called spindle assembly checkpoint (SAC), Mad2 and ...
Visconti R. +2 more
openaire +4 more sources
HIPK2 and extrachromosomal histone H2B are separately recruited by Aurora-B for cytokinesis [PDF]
Cytokinesis, the final phase of cell division, is necessary to form two distinct daughter cells with correct distribution of genomic and cytoplasmic materials.
A Konishi +65 more
core +1 more source

