Results 101 to 110 of about 534,301 (305)

The Incredible Shrinking Spindle [PDF]

Developmental Cell, 2018
As cell size decreases during the reductive divisions of early development, intracellular structures must shrink to fit. In this issue of Developmental Cell, Lacroix et al. (2018) identify a conserved mechanism of spindle scaling in nematode and sea urchin embryos whereby spindle microtubule polymerization rates decrease as development proceeds.
Brownlee, Christopher, Heald, Rebecca
openaire   +5 more sources

Microtubule organization during successive microsporogenesis in Allium cepa and simultaneous cytokinesis in Nicotiana tabacum

Biologia Plantarum, 2011
Microtubule cytoskeleton organization during microspore mother cell (MMC) meiosis in Allium cepa L. and microsporogenesis in Nicotiana tabacum L. was examined. The MMC microtubules (MTs) were short and well dispersed in the cytoplasm of both taxa. As the
Y. N. Zhang, D. M. Wei, Y. Y. Song, L. Chen, X. Y. Zhu, H. Q. Tian   +5 more
doaj   +1 more source

Illuminating spindle convex bodies and minimizing the volume of spherical sets of constant width

, 2011
A subset of the d-dimensional Euclidean space having nonempty interior is called a spindle convex body if it is the intersection of (finitely or infinitely many) congruent d-dimensional closed balls.
B.V. Dekster, B.V. Dekster, C.A. Rogers, C.B. Allendoerfer, E. Meissner, H. Hadwiger, H. Martini, I. Dumer, I. Papadoperakis, J. Kahn, K. Bezdek, K. Bezdek, K. Bezdek, Károly Bezdek, L.A. Santaló, L.A. Santaló, M. Aigner, M. Lassak, O. Schramm, P. Erdős, P. Erdős, P.W. Fowler, T. Bayen, V. Boltyanski, V. Boltyanski, W. Blaschke   +25 more
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Activation of ADF/cofilin by phosphorylation-regulated Slingshot phosphatase is required for the meiotic spindle assembly in Xenopus laevis oocytes [PDF]

, 2013
We identify Xenopus ADF/cofilin (XAC) and its activator, Slingshot phosphatase (XSSH), as key regulators of actin dynamics essential for spindle microtubule assembly during Xenopus oocyte maturation.
Abe, Hiroshi, De Bock, Pieter-Jan, Fujiki, Saburo, Gevaert, Kris, Iwase, Shohei, Kuchitsu, Miyako, Ono, Shoichiro, Sato, Ryuhei, Tawada, Toshinobu, Yamagishi, Yuka   +9 more
core   +1 more source

Concentrating on the mitotic spindle [PDF]

Journal of Cell Biology, 2015
In eukaryotes, the microtubule-based spindle drives chromosome segregation. In this issue, Schweizer et al. (2015; J. Cell Biol. http://dx.doi.org/10.1083/jcb.201506107) find that the spindle area is demarcated by a semipermeable organelle barrier. Molecular crowding, which is microtubule independent, causes the enrichment and/or retention of crucial ...
Anne Marie Ladouceur, Paul S. Maddox
openaire   +3 more sources

Exportins can inhibit major mitotic assembly events in vitro: membrane fusion, nuclear pore formation, and spindle assembly

Nucleus, 2020
Xenopus egg extracts are a powerful in vitro tool for studying complex biological processes, including nuclear reconstitution, nuclear membrane and pore assembly, and spindle assembly.
Matthew S. Nord, Cyril Bernis, Sarah Carmona, Dennis C. Garland, Anna Travesa, Douglass J. Forbes   +5 more
doaj   +1 more source

The mechanism of anaphase spindle elongation: uncoupling of tubulin incorporation and microtubule sliding during in vitro spindle reactivation. [PDF]

, 1988
To study tubulin polymerization and microtubule sliding during spindle elongation in vitro, we developed a method of uncoupling the two processes. When isolated diatom spindles were incubated with biotinylated tubulin (biot-tb) without ATP, biot-tb was ...
CANDE, W. Zacheus, Masuda, H, McDonald, K   +2 more
core  

A three-step MTOC fragmentation mechanism facilitates bipolar spindle assembly in mouse oocytes

Nature Communications, 2015
Assembly of a bipolar microtubule spindle is essential for accurate chromosome segregation. In somatic cells, spindle bipolarity is determined by the presence of exactly two centrosomes. Remarkably, mammalian oocytes do not contain canonical centrosomes.
D. Clift, M. Schuh
semanticscholar   +1 more source

Intelligent Sensing of Thermal Error of CNC Machine Tool Spindle Based on Multi-Source Information Fusion

Sensors
Aiming at the shortcomings of single-sensor sensing information characterization ability, which is easily interfered with by external environmental factors, a method of intelligent perception is proposed in this paper. This method integrates multi-source
Zeqing Yang, Beibei Liu, Yanrui Zhang, Yingshu Chen, Hongwei Zhao, Guofeng Zhang, Wei Yi, Zonghua Zhang   +7 more
doaj   +1 more source

HIM-10 is required for kinetochore structure and function on Caenorhabditis elegans holocentric chromosomes. [PDF]

, 2001
Macromolecular structures called kinetochores attach and move chromosomes within the spindle during chromosome segregation. Using electron microscopy, we identified a structure on the holocentric mitotic and meiotic chromosomes of Caenorhabditis elegans ...
Albertson, Albertson, Albertson, Amon, Buchwitz, Dernburg, Fire, Gonczy, Harlow, Heald, Hedgecock, Hodgkin, Howman, Kainta, Kimble, Lombillo, Maney, McDonald, McEwen, Mello, Moore, Nabetani, Newman, Nicklas, O'Connell, Rappleye, Roos, Savoian, Shah, Sharp, Sharp, Wigge, Yanagida, Yao   +33 more
core   +2 more sources