Results 141 to 150 of about 923,115 (353)

Methylated histones on mitotic chromosomes promote topoisomerase IIα function for high fidelity chromosome segregation

iScience, 2023
Summary: DNA Topoisomerase IIα (TopoIIα) decatenates sister chromatids, allowing their segregation in mitosis. Without the TopoIIα Strand Passage Reaction (SPR), chromosome bridges and ultra-fine DNA bridges (UFBs) arise in anaphase.
Sanjana Sundararajan, Hyewon Park, Shinji Kawano, Marnie Johansson, Bunu Lama, Tomoko Saito-Fujita, Noriko Saitoh, Alexei Arnaoutov, Mary Dasso, Zhengqiang Wang, Daniel Keifenheim, Duncan J. Clarke, Yoshiaki Azuma   +12 more
doaj  

NONRANDOM SEGREGATION OF CHROMOSOMES IN DROSOPHILA MALES [PDF]

, 1965
W. James Peacock
openalex   +1 more source

The NLS3 Motif in TPX2 Regulates Spindle Architecture in Xenopus Egg Extracts

Cytoskeleton, EarlyView.
ABSTRACT A bipolar spindle composed of microtubules and many associated proteins functions to segregate chromosomes during cell division in all eukaryotes, yet both spindle size and architecture vary dramatically across different species and cell types.
Guadalupe E. Pena, Xiao Zhou, Lauren Slevin, Christopher Brownlee, Rebecca Heald   +4 more
wiley   +1 more source

A CHROMOSOMAL TRANSLOCATION IN SORDARIA FIMICOLA AND IRREGULAR SEGREGATION OF CHROMOSOMES [PDF]

, 1967
B. S. Cox, J. J. B. Gill
openalex   +1 more source

Mechanical Coupling With the Nuclear Envelope Shapes the Schizosaccharomyces pombe Mitotic Spindle

Cytoskeleton, EarlyView.
ABSTRACT The fission yeast Schizosaccharomyces pombe divides via closed mitosis, meaning that spindle elongation and chromosome segregation transpire entirely within the closed nuclear envelope. Both the spindle and nuclear envelope must undergo shape changes and exert varying forces on each other during this process.
Marcus A. Begley, Taylor Mahoney, Christian Pagán Medina, Parsa Zareiesfandabadi, Matthew B. Rapp, Mastawal Tirfe, Sharonda J. LeBlanc, Meredith D. Betterton, Mary Williard Elting   +8 more
wiley   +1 more source

Nuclear Entanglement: New Insights Into the Role of Cytoskeleton and Nucleoskeleton in Plant Nuclear Function

Cytoskeleton, EarlyView.
ABSTRACT Of the three types of cytoskeleton known in animals—actin, microtubules, and intermediate filaments—only actin and microtubules exist in plants. Both play important roles in cellular shaping, organelle movement, organization of the endomembrane system, and cell signaling.
Norman R. Groves, Katelyn Amstutz, Lily A. Schumacher, Iris Meier   +3 more
wiley   +1 more source

p53 Prohibits Propagation of Chromosome Segregation Errors that Produce Structural Aneuploidies

Cell Reports, 2017
Summary: The presence of an abnormal karyotype has been shown to be profoundly detrimental at the cellular and organismal levels but is an overt hallmark of cancer.
Mar Soto, Jonne A. Raaijmakers, Bjorn Bakker, Diana C.J. Spierings, Peter M. Lansdorp, Floris Foijer, René H. Medema   +6 more
doaj  

Regular Segregation of Seven Asynaptic Sex Chromosomes in the Male ofAsphaera DanielaBechyné (Coleoptera, Alticidae) [PDF]

, 1968
Niilo Virkki
openalex   +1 more source

LZTS2 Negatively Regulates Centrosomal CEP135 Levels and Microtubule Nucleation

Cytoskeleton, EarlyView.
ABSTRACT The microtubule cytoskeleton is a fundamental functional component of the cell. In vertebrate proliferating cells, centrosomes are the primary microtubule organizing center (MTOC), and their dysregulation has been linked to genomic instability and cancer.
Catarina Peneda, Joana N. Bugalhao, Marco Antonio Dias Louro, Andreia Henriques‐Soares, Monica Bettencourt‐Dias   +4 more
wiley   +1 more source

In Vitro Live Cell Imaging Reveals Nuclear Dynamics and Role of the Cytoskeleton During Asymmetric Division of Pollen Mitosis I in Nicotiana Benthamiana

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, Masako Igarashi, Tomomi Shinagawa, Ikuma Kaneshiro, Haoto Anan, Daisuke Kurihara   +5 more
wiley   +1 more source