Results 1 to 10 of about 1,498,374 (404)

Movement of Lipid Droplets in the Arabidopsis Pollen Tube Is Dependent on the Actomyosin System

Plants, 2023
The growth of pollen tubes, which depends on actin filaments, is pivotal for plant reproduction. Pharmacological experiments showed that while oryzalin and brefeldin A treatments had no significant effect on the lipid droplets (LDs) trafficking, while 2 ...
Lang Yang, Jinhong Liu, Ching-Kiu Wong, Boon Leong Lim   +3 more
doaj   +1 more source

Envisioning a role for nuclear actin in prophase I spermatocytes

Frontiers in Cell and Developmental Biology, 2023
Actin is a multi-functional protein that is involved in numerous cellular processes including cytoskeleton regulation, cell migration, and cellular integrity.
Jana Petrusová, Jasper Manning, Dominik Filipp   +2 more
doaj   +1 more source

Discovery of the first unconventional myosin: Acanthamoeba myosin-I

Frontiers in Physiology, 2023
Having characterized actin from Acanthamoeba castellanii (Weihing and Korn, Biochemistry, 1971, 10, 590–600) and knowing that myosin had been isolated from the slime mold Physarum (Hatano and Tazawa, Biochim. Biophys.
Thomas D. Pollard, Thomas D. Pollard, Edward D. Korn   +2 more
doaj   +1 more source

Wrangling Actin Assemblies: Actin Ring Dynamics during Cell Wound Repair

Cells, 2022
To cope with continuous physiological and environmental stresses, cells of all sizes require an effective wound repair process to seal breaches to their cortex.
Justin Hui, Viktor Stjepić, Mitsutoshi Nakamura, Susan M. Parkhurst   +3 more
doaj   +1 more source

Competition between myosin II and βH-spectrin regulates cytoskeletal tension

eLife, 2023
Spectrins are membrane cytoskeletal proteins generally thought to function as heterotetramers comprising two α-spectrins and two β-spectrins. They influence cell shape and Hippo signaling, but the mechanism by which they influence Hippo signaling has ...
Consuelo Ibar, Krishna Chinthalapudi, Sarah M Heissler, Kenneth D Irvine   +3 more
doaj   +1 more source

Linking the Landscape of MYH9-Related Diseases to the Molecular Mechanisms that Control Non-Muscle Myosin II-A Function in Cells

Cells, 2020
The MYH9 gene encodes the heavy chain (MHCII) of non-muscle myosin II A (NMII-A). This is an actin-binding molecular motor essential for development that participates in many crucial cellular processes such as adhesion, cell migration, cytokinesis and ...
Gloria Asensio-Juárez, Clara Llorente-González, Miguel Vicente-Manzanares   +2 more
doaj   +1 more source

Single-molecule imaging reveals the concerted release of myosin from regulated thin filaments

eLife, 2021
Regulated thin filaments (RTFs) tightly control striated muscle contraction through calcium binding to troponin, which enables tropomyosin to expose myosin-binding sites on actin. Myosin binding holds tropomyosin in an open position, exposing more myosin-
Quentin M Smith, Alessio V Inchingolo, Madalina-Daniela Mihailescu, Hongsheng Dai, Neil M Kad   +4 more
doaj   +1 more source

Stay in Touch—The Cortical ER of Moss Protonemata in Osmotic Stress Situations

Plants, 2020
Plasmolysis is usually introduced to cell biology students as a tool to illustrate the plasma membrane: hypertonic solutions cause the living protoplast to shrink by osmotic water loss; hence, it detaches from the surrounding cell wall.
Dominik Harant, Ingeborg Lang
doaj   +1 more source

SUMOylation of nuclear actin [PDF]

, 2009
Actin, a major component of the cytoplasm, is also abundant in the nucleus. Nuclear actin is involved in a variety of nuclear processes including transcription, chromatin remodeling, and intranuclear transport.
Alessandro Arduini, Aslan, Ball, Camacho, Camacho, Carlos J. Camacho, Chik, Chuang, Comeau, Comeau, Dantan-Gonzalez, Dignam, dos Remedios, Dundr, Field, Frances V. Fuller-Pace, Hay, Hofmann, Hofmann, Jacobs, James L. Lessard, Jockusch, Johnson, Kalderon, Karakozova, Kozakov, Kudo, Kudryashova, Lin, Lorenz, Louvet, Mandell, Matic, Matsuzaki, McDonald, Panse, Pendleton, Pestic-Dragovich, Posern, Primal de Lanerolle, Reverter, Rodriguez, Rosas-Acosta, Samantha M. Nicol, Schoenenberger, Schoenenberger, Stuven, Thom, Vertegaal, Wada, Wang, Westphal, Wilma A. Hofmann   +52 more
core   +5 more sources

Catastrophic disassembly of actin filaments via Mical-mediated oxidation. [PDF]

, 2017
Actin filament assembly and disassembly are vital for cell functions. MICAL Redox enzymes are important post-translational effectors of actin that stereo-specifically oxidize actin's M44 and M47 residues to induce cellular F-actin disassembly.
Ge, Peng, Grintsevich, Elena E, Reisler, Emil, Sawaya, Michael R, Terman, Jonathan R, Yesilyurt, Hunkar Gizem, Zhou, Z Hong   +6 more
core   +3 more sources