Calcium depletion destabilises kinetochore fibres by the removal of CENP-F from the kinetochore [PDF]
The attachment of spindle fibres to the kinetochore is an important process that ensures successful completion of the cell division. The Ca2+ concentration increases during the mitotic phase and contributes microtubule stability. However, its role in the
Rinyaporn Phengchat +3 more
doaj +3 more sources
Recent advances in plant kinetochore research [PDF]
Faithful chromosome segregation is crucial for cell division in eukaryotes, facilitated by the kinetochore, a multi-subunit protein complex that connects chromosomes to the spindle microtubules.
Elena Kozgunova, Elena Kozgunova
doaj +2 more sources
Plant kinetochore complex: composition, function, and regulation [PDF]
The kinetochore complex, an important protein assembly situated on the centromere, plays a pivotal role in chromosome segregation during cell division.
Yuqian Xie +5 more
doaj +2 more sources
Poleward force at the kinetochore in metaphase depends on the number of kinetochore microtubules. [PDF]
To examine the dependence of poleward force at a kinetochore on the number of kinetochore microtubules (kMTs), we altered the normal balance in the number of microtubules at opposing homologous kinetochores in meiosis I grasshopper spermatocytes at metaphase with a focused laser microbeam.
T S, Hays, E D, Salmon
openaire +4 more sources
The Saccharomyces cerevisiae kinetochore
Accurate chromosome segregation is DApenDAnt on a specialized chromosomal structure, the kinetochore/centromere. The only essential constituent of the S. cerevisiae kinetochore established today is CBF3, a multisubunit complex that binds to S. cerevisiae centromere DNA.
Lechner, Johannes, Ortiz, Jennifer
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Sds22 regulates aurora B activity and microtubule-kinetochore interactions at mitosis [PDF]
We have studied Sds22, a conserved regulator of protein phosphatase 1 (PP1) activity, and determined its role in modulating the activity of aurora B kinase and kinetochore-microtubule inter-actions.
DeLuca, Jennifer G. +11 more
core +1 more source
Bub1 autophosphorylation feeds back to regulate kinetochore docking and promote localized substrate phosphorylation [PDF]
During mitosis, Bub1 kinase phosphorylates histone H2A-T120 to promote centromere sister chromatid cohesion through recruitment of shugoshin (Sgo) proteins. The regulation and dynamics of H2A-T120 phosphorylation are poorly understood. Using quantitative
Lajeunesse, Audrey +6 more
core +1 more source
A critical requirement for mitosis is the distribution of genetic material to the two daughter cells. The central player in this process is the macromolecular kinetochore structure, which binds to both chromosomal DNA and spindle microtubule polymers to direct chromosome alignment and segregation. This review will discuss the key kinetochore activities
openaire +2 more sources
Bod1, a novel kinetochore protein required for chromosome biorientation [PDF]
We have combined the proteomic analysis of Xenopus laevis in vitro–assembled chromosomes with RNA interference and live cell imaging in HeLa cells to identify novel factors required for proper chromosome segregation. The first of these is Bod1, a protein
McClelland, Sarah E. +25 more
core +1 more source
Step-wise assembly, maturation and dynamic behavior of the human CENP-P/O/R/Q/U kinetochore sub-complex [PDF]
Kinetochores are multi-protein megadalton assemblies that are required for attachment of microtubules to centromeres and, in turn, the segregation of chromosomes in mitosis. Kinetochore assembly is a cell cycle regulated multi-step process.
Tobias Ulbricht +47 more
core +1 more source

