Results 51 to 60 of about 82,635 (293)

A single protofilament is sufficient to support unidirectional walking of dynein and kinesin. [PDF]

PLoS ONE, 2012
Cytoplasmic dynein and kinesin are two-headed microtubule motor proteins that move in opposite directions on microtubules. It is known that kinesin steps by a 'hand-over-hand' mechanism, but it is unclear by which mechanism dynein steps.
Keitaro Shibata, Michi Miura, Yuta Watanabe, Kei Saito, Atsuko Nishimura, Ken'ya Furuta, Yoko Y Toyoshima   +6 more
doaj   +1 more source

Chronic Hypoxia Disrupts Spermatogenesis Through ASXL2–EZH2–Mediated Microtubule Destabilization

Advanced Science, EarlyView.
This study reveals the mechanism by which chronic hypoxia impairs spermatogenesis via the ASXL2–EZH2 axis, hindering the transition of spermatids from round to elongated forms. Key findings reveal that under hypoxic conditions, downregulated ASXL2 expression reduces EZH2 binding to the CEP162 promoter, leading to decreased H3K27me3 modification and ...
Jun Yin, Mengjie Zhang, Wenying Liu, Wenlong Shen, Debao Li, Hongming Miao, Fang Deng, Gang Zhang, Yi Tian, Yi Zhang, Zhihu Zhao, Bing Ni   +11 more
wiley   +1 more source

Transport by molecular motors in the presence of static defects [PDF]

, 2009
The transport by molecular motors along cytoskeletal filaments is studied theoretically in the presence of static defects. The movements of single motors are described as biased random walks along the filament as well as binding to and unbinding from the
A. Ebneth, A. Parmeggiani, A. Seitz, A. Seitz, A.B. Kolomeisky, B. Schmittmann, B.M. Paschal, C. Leduc, E.-M. Mandelkow, G. Tripathy, G.A. Klein, G.M. Schütz, H. Hagiwara, H. Hess, I.M. Crevel, J. Beeg, J. Howard, J. Krug, J.-C. Larcher, J.C. Bulisnki, K. Nishinari, K. Tokuraku, L.A. Lopez, L.J. Davis, L.S.B. Goldstein, M. Vershinin, M. Vershinin, M.G.L. Heuvel Van den, M.J.I. Müller, M.J.I. Müller, M.R. Evans, N. Mirin, N.A. Reed, P. Pierobon, R. Dixit, R. Lipowsky, R. Lipowsky, R. Sato-Harada, Reinhard Lipowsky, S. Heins, S. Klumpp, S. Klumpp, S. Klumpp, S. Klumpp, S. Klumpp, S. Klumpp, S. Klumpp, S. Konzack, S. Lakämper, S.A. Janowsky, Stefan Klumpp, T.M. Nieuwenhuizen, Yan Chai   +52 more
core   +3 more sources

KDM4A Erases the H3R17me2a Mark, Facilitating Chromosome Condensation

Advanced Science, EarlyView.
This study reveals a reversible histone modification switch governing chromosome condensation during mitosis. PKCα‐activated KDM4A removes H3R17me2a, permitting Suv39h1‐driven H3K9me3 deposition. This epigenetic transition recruits the chromosomal passenger complex and triggers Aurora B‐dependent H3S10 phosphorylation, coordinating chromatin remodeling
Yena Cho, Jee Won Hwang, Gyu Hwan Hyun, Sangkyu Lee, Dae‐Geun Song, Su‐Nam Kim, Yong Kee Kim   +6 more
wiley   +1 more source

Single molecule imaging reveals differences in microtubule track selection between Kinesin motors.

PLoS Biology, 2009
Cells generate diverse microtubule populations by polymerization of a common alpha/beta-tubulin building block. How microtubule associated proteins translate microtubule heterogeneity into specific cellular functions is not clear.
Dawen Cai, Dyke P McEwen, Jeffery R Martens, Edgar Meyhofer, Kristen J Verhey   +4 more
doaj   +1 more source

Understanding and Overcoming Antibody‐Drug Conjugate Resistance: Biological Mechanisms and Emerging Analytical Frameworks in Breast Cancer

Advanced Science, EarlyView.
Antibody–drug conjugates (ADCs) transform breast cancer therapy, yet resistance limits their durability. Emerging evidence reveals that ADC failure is not solely tumor‐intrinsic but shaped by dynamic tumor–microenvironment interactions that alter drug delivery, processing, and response.
Minji Seo, Jangsoon Lee, Naoto T. Ueno
wiley   +1 more source

Granule-Dependent NK Cell Killing of Cryptococcus Requires Kinesin to Reposition the Cytolytic Machinery for Directed Cytotoxicity

Cell Reports, 2018
Summary: Cryptococcus is the most important cause of fungal meningitis in immunocompromised individuals. Host defense against Cryptococcus involves direct killing by NK cells.
Henry Ogbomo, Martina Timm-McCann, Tavish Barnes, Richard F. Xiang, Khusraw Jamil, Anutosh Ganguly, Danuta Stack, Shaunna M. Huston, Shu Shun Li, Pina Colarusso, Christopher H. Mody   +10 more
doaj   +1 more source

Ectopic A-lattice seams destabilize microtubules [PDF]

, 2014
Natural microtubules typically include one A-lattice seam within an otherwise helically symmetric B-lattice tube. It is currently unclear how A-lattice seams influence microtubule dynamic instability.
A des Georges, A Desai, A Dimitrov, A Grafmuller, AA Hyman, B Vitre, D Chretien, D Chretien, D Chretien, D Chretien, D Panda, D Sept, DJ Odde, DN Drechsel, DP Dias, DR Drummond, E Nogales, EM Mandelkow, EM Mandelkow, FM Coquelle, G Brouhard, G Margolin, H Bowne-Anderson, H Sui, IM Crevel, JG Cueva, JL Hoog, JR McIntosh, JR Simon, JS Kaye, KE Busch, L Amos, L Sandblad, LG Tilney, LM Rice, M Braun, M Caplow, M Caplow, M Katsuki, M Katsuki, M Kikkawa, MK Gardner, MK Gardner, N Galjart, P Bieling, R Dallai, RA Walker, RA Walker, SP Maurer, SP Maurer, T Mitchison, T Mitchison, Y Komarova, YH Song, ZC Zhu   +54 more
core   +1 more source

Kinesin‐Induced Buckling Reveals the Limits of Microtubule Self‐Repair

Advanced Science, EarlyView.
This study shows that kinesin‐driven buckling induces extensive microtubule lattice damage that often exceeds intrinsic self‐repair and leads to filament failure. While curvature, motor motility, and force individually cause limited damage, their combination overwhelms repair.
Shweta Nandakumar, Jonas Bosche, Mirko Wieczorek, Constantin Matteo Albrecht, Belinda König, Mona Grünewald, Ludger Santen, Stefan Diez, Reza Shaebani, Laura Schaedel   +9 more
wiley   +1 more source

Kinesin-5 Is Dispensable for Bipolar Spindle Formation and Elongation in Candida albicans, but Simultaneous Loss of Kinesin-14 Activity Is Lethal

mSphere, 2019
Mitotic spindles assume a bipolar architecture through the concerted actions of microtubules, motors, and cross-linking proteins. In most eukaryotes, kinesin-5 motors are essential to this process, and cells will fail to form a bipolar spindle without ...
Irsa Shoukat, Corey Frazer, John S. Allingham   +2 more
doaj   +1 more source