Results 71 to 80 of about 66,778 (245)
Molecular Biology of the Cell, 2019 Spindle microtubules, whose dynamics vary over time and at different locations, cooperatively drive chromosome segregation. Measurements of microtubule dynamics and spindle ultrastructure can provide insight into the behaviors of microtubules, helping elucidate the mechanism of chromosome segregation.
Yu, Che-Hang +8 more
openaire +3 more sources
Anaphase initiation in Saccharomyces cerevisiae is controlled by the APC-dependent degradation of the anaphase inhibitor Pds1p. [PDF]
Genes & Development, 1996 Anaphase initiation has been postulated to be controlled through the ubiquitin-dependent proteolysis of an unknown inhibitor. This process involves the anaphase promoting complex (APC), a specific ubiquitin ligase that has been shown to be involved in mitotic cyclin degradation.
Jan-Michael Peters +3 more
openaire +3 more sources
PEK14: A Kinesin‐4 Necessary for Male‐Derived Fertility in Arabidopsis thaliana
Cytoskeleton, EarlyView.ABSTRACT Of the 61 kinesins annotated in Arabidopsis thaliana, many are still without assigned function. Here, we have screened an insertional mutant library of Arabidopsis pollen‐expressed kinesins for fertility defects. Insertional mutants for three kinesins showed a significant reduction in seed set.
Isabella N. Mendes +6 more
wiley +1 more source
Chromosome Bridges Maintain Kinetochore-Microtubule Attachment throughout Mitosis and Rarely Break during Anaphase. [PDF]
PLoS ONE, 2016 Accurate chromosome segregation during cell division is essential to maintain genome stability, and chromosome segregation errors are causally linked to genetic disorders and cancer.
Judit Pampalona +6 more
doaj +1 more source
Real time observation of anaphase in vitro. [PDF]
Proceedings of the National Academy of Sciences, 1996 We used digital fluorescence microscopy to make real-time observations of anaphase chromosome movement and changes in microtubule organization in spindles assembled in Xenopus egg extracts. Anaphase chromosome movement in these extracts resembled that seen in living vertebrate cells.
Arshad Desai +2 more
openaire +3 more sources
Making Two out of One: Kinesin Motors Driving Plant Cell Division
Cytoskeleton, EarlyView.ABSTRACT The Kinesin superfamily of microtubule dependent motors is present in all eukaryotes. Not all of the subfamilies are represented in all kingdoms, and the ones that are do not always show conserved functions. Tight control of the cytoskeleton is essential for proper progression and completion of mitosis and cytokinesis, and key functions are ...
Choy Kriechbaum, Sabine Müller
wiley +1 more source
An Orthogonal Way of Writing the Tubulin Code
Cytoskeleton, EarlyView.ABSTRACT The Elongator complex has long been characterized for its role in tRNA modification and modulation of protein translation. Beyond these established functions, recent findings reveal an unexpected role for Elongator in directly interacting and tuning microtubule dynamics and properties, broadening its biological significance in eukaryotic cells.
Vicente Jose Planelles‐Herrero +1 more
wiley +1 more source
Nature Communications, 2020 The spindle assembly checkpoint (SAC) safeguards chromosome segregation by regulating the anaphase promoting complex/cyclosome (APC/C), allowing chromosomes to correctly attach to mitotic spindles. Here the authors reveal a role for Cullin–RING ubiquitin
Sang-Min Jang +12 more
doaj +1 more source
The multilayer regulation of the metaphase-to-anaphase transition [PDF]
Cell Cycle, 2009 The fluctuating activity of the cyclin-dependent kinases (Cdks) is critical for the periodic phosphorylation of a given Cdk substrate. Previous studies have been focus on the positive role of Cdk-dependent protein phosphorylation in cell cycle progression.
Yanchang Wang +2 more
openaire +3 more sources
Cytoskeleton, EarlyView.ABSTRACT Pollen is a male gametophyte of angiosperms. Following meiosis, the microspore undergoes an asymmetric division called pollen mitosis I (PMI), which produces two cells of different sizes: a large vegetative cell and a small generative cell. Polarized nuclear migration and positioning during PMI are important for successful pollen development ...
Yoko Mizuta +5 more
wiley +1 more source