Results 51 to 60 of about 66,778 (245)

The copy-number and varied strengths of MELT motifs in Spc105 balance the strength and responsiveness of the spindle assembly checkpoint

eLife, 2020
During mitosis, the Spindle Assembly Checkpoint (SAC) maintains genome stability while also ensuring timely anaphase onset. To maintain genome stability, the SAC must be strong to delay anaphase even if just one chromosome is unattached, but for timely ...
Babhrubahan Roy, Simon JY Han, Adrienne Nicole Fontan, Ajit P Joglekar   +3 more
doaj   +1 more source

Condensin II resolves chromosomal associations to enable anaphase I segregation in Drosophila male meiosis. [PDF]

PLoS Genetics, 2008
Several meiotic processes ensure faithful chromosome segregation to create haploid gametes. Errors to any one of these processes can lead to zygotic aneuploidy with the potential for developmental abnormalities.
Tom A Hartl, Sarah J Sweeney, Peter J Knepler, Giovanni Bosco   +3 more
doaj   +1 more source

Polo‐Like Kinase 1 Phosphorylation Tunes the Functional Viscoelastic Properties of the Centrosome Scaffold

Advanced Science, EarlyView.
To enable mitotic spindle assembly during cell division, centrosomes must bear tensile stresses generated by microtubule‐mediated pulling forces. Micro‐rheology reveals that PLK‐1 phosphorylation of the scaffold protein SPD‐5 tunes the viscoelasticity, size, and morphology of the centrosome scaffold in C. elegans.
Matthew Amato, June Ho Hwang, Manolo U. Rios, Nicole E. Familiari, Michael K. Rosen, Jeffrey B. Woodruff   +5 more
wiley   +1 more source

Multipolar spindle pole coalescence is a major source of kinetochore mis-attachment and chromosome mis-segregation in cancer cells. [PDF]

PLoS ONE, 2009
Many cancer cells display a CIN (Chromosome Instability) phenotype, by which they exhibit high rates of chromosome loss or gain at each cell cycle. Over the years, a number of different mechanisms, including mitotic spindle multipolarity, cytokinesis ...
William T Silkworth, Isaac K Nardi, Lindsey M Scholl, Daniela Cimini   +3 more
doaj   +1 more source

When the Clock Is Ticking: The Role of Mitotic Duration in Cell Fate Determination

BioEssays, EarlyView.
Recently, several studies identified mechanisms by which cells measure mitotic duration and how this influences cell fate, leading to normal cell cycle progression or G1 arrest. In light of drug‐resistant cancer cells that continue proliferating even after mitotic errors, understanding these mechanisms opens the door for new potential therapeutic ...
Cornelia Sala, Elmar Schiebel
wiley   +1 more source

Meiotic behavior of small chromosomes in maize

Frontiers in Plant Science, 2013
The typical behavior of chromosomes in meiosis is that homologous pairs synapse, recombine and then separate at anaphase I. At anaphase II, sister chromatids separate.
James A. Birchler, Fangpu eHan
doaj   +1 more source

A theoretical model of anaphase

Mathematical Biosciences
This paper develops a theory for anaphase in cells. After a brief description of microtubules, the mitotic spindle and the centrosome, a mathematical model for anaphase is introduced and developed in the context of the cell cytoplasm and liquid crystalline structures.
Brian D. Sleeman, Iain W. Stewart
openaire   +3 more sources

Ubiquitination in cancer: mechanisms and therapeutic opportunities

Cancer Communications, EarlyView.
Abstract Ubiquitination, a key post‐translational modification, plays an essential role in tumor biology by regulating fundamental cellular processes, such as metabolism and cell death. Additionally, it interacts with other post‐translational modifications, which are closely linked to tumorigenesis, tumor progression, the tumor microenvironment, and ...
Susi Zhu, Xu Zhang, Waner Liu, Zhe Zhou, Siyu Xiong, Jie Li, Xiang Chen, Cong Peng   +7 more
wiley   +1 more source

The Anaphase-Promoting Complex/Cyclosome Is Required for Anaphase Progression in Multinucleated Ashbya gossypii Cells [PDF]

Eukaryotic Cell, 2007
ABSTRACT Regulated protein degradation is essential for eukaryotic cell cycle progression. The anaphase-promoting complex/cyclosome (APC/C) is responsible for the protein destruction required for the initiation of anaphase and the exit from mitosis, including the degradation of securin and B-type cyclins.
Gladfelter, A. S., Sustreanu, N., Hungerbuehler, A. K., Voegeli, S., Galati, V., Philippsen, P.   +5 more
openaire   +3 more sources

Internal Ubiquitin Electrophiles for Covalent Trapping and Inhibition of Deubiquitinases

ChemBioChem, EarlyView.
GA: Genetically encoded internal electrophiles in ubiquitin (Ub) enable the profiling of multivalent interaction interfaces, addressing a key limitation of current Ub‐based activity‐based probes. In this study, these probes capture a Ub–deubiquitinase interaction with minimal structural perturbation and serve as selective diUb probes that covalently ...
Nipuni M. Pannala, Rishi S. Patel, Abhijith Saseendran Anit, Debapriya Bhattacharya, Kristos Negron Teron, Bryon Drown, Rudi Fasan, Chittaranjan Das   +7 more
wiley   +1 more source