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PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
2007-12-17
pubmed:abstractText
The mitotic spindle checkpoint prevents the onset of anaphase and subsequent cell division until chromosomes are properly aligned on a bipolar spindle. Thus, it regulates the cell division cycle by keeping cells with defective spindles from leaving mitosis. The budding uninhibited by benzimidazole (Bub1) is a key component of mitotic checkpoint. Bub1 encodes a serine/threonine kinase required for mitotic spindle checkpoint function. The regulation of cell morphology in eukaryotic cells is a complex process involving major components of the cytoskeleton including actin microfilaments, microtubules, and intermediate filaments (IFs). Here we show that Bub1 directly affects the structural integrity of IFs. Constitutive expression of Bub1 caused disappearance of filamentous vimentin, a type III IF, and consequently changed cell morphology. Expression of kinase domain-deleted Bub1 induced neither morphological change nor disappearance of vimentin. These observations suggest that Bub1 not only regulates the cell cycle, but also may be involved in the cytoskeletal control in interphase cells.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jan
pubmed:issn
1090-2104
pubmed:author
pubmed:issnType
Electronic
pubmed:day
25
pubmed:volume
365
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
691-7
pubmed:meshHeading
pubmed:year
2008
pubmed:articleTitle
Changes in cell morphology and cytoskeletal organization are induced by human mitotic checkpoint gene, Bub1.
pubmed:affiliation
Division of Haematology, Department of Internal Medicine, Juntendo University School of Medicine, 2-1-1 Hongo, Bunkyo-ku, 113-8421 Tokyo, Japan.
pubmed:publicationType
Journal Article