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Conventional kinesin is a two-headed homodimeric motor protein, which is able to walk along microtubules processively by hydrolyzing ATP. Its neck linkers, which connect the two motor domains and can undergo a docking/undocking transition,…

生物大分子 · 定量生物学 2015-05-27 András Czövek , Gergely J Szöllősi , Imre Derényi

Dimeric molecular motors walk on polar tracks by binding and hydrolyzing one ATP per step. Despite tremendous progress, the waiting state for ATP binding in the well-studied kinesin that walks on microtubule (MT), remains controversial. One…

亚细胞过程 · 定量生物学 2022-06-08 Ryota Takaki , Mauro L. Mugnai , Yonathan Goldtzvik , D. Thirumalai

Two headed motor proteins, such as kinesin and dynein, hidrolyze environmental ATP in order to propel unidirectionally along cytoskeletal filaments such as microtubules. In the case of kinesin, protein heads bind primarily on the alpha…

统计力学 · 物理学 2007-05-23 G. P. Tsironis , K. Lindenberg

Conventional kinesin is a motor protein, which is able to walk along a microtubule processively. The exact mechanism of the stepping motion and force generation of kinesin is still far from clear. In this paper we argue that neck linker…

生物物理 · 物理学 2009-01-25 Andras Czovek , Gergely J. Szollosi , Imre Derenyi

How ATP binding initiates the docking process of kinesin's neck linker is a key question in understanding kinesin mechanism. It is believed that the formation of an extra turn structure by the first three amino acids of neck linker (LYS325,…

生物物理 · 物理学 2014-10-14 Yi-Zhao Geng , Qing Ji , Shu-Xia Liu , Shiwei Yan

Conventional kinesin is a homodimeric motor protein that unidirectionally transports organelles along filamentous microtubule (MT) by hydrolyzing ATP molecules. This study shows that the load modulations of ATP turnover and head diffusion…

生物物理 · 物理学 2009-07-13 Dagong Fan , Wenwei Zheng , Ruizheng Hou , Fuli Li , Zhisong Wang

Kinesin-1 is an ATP-driven, two-headed motor protein that transports intracellular cargoes along microtubule. Based on recent experimental observations, we formulate a mechanochemical model for it, in which forward/backward/futile cycle of…

生物物理 · 物理学 2021-12-30 Beibei Shen , Yunxin Zhang

How molecular motors like Kinesin regulates the affinity to the rail protein in the process of ATP hydrolysis remains to be uncovered. To understand the regulation mechanism, we investigate the structural fluctuation of KIF1A in different…

生物大分子 · 定量生物学 2008-02-04 Ryo Kanada , Fumiko Takagi , Macoto Kikuchi

Microtubules are filamentous tubular protein polymers which are essential for a range of cellular behaviour, and are generally straight over micron length scales. However, in some gliding assays, where microtubules move over a carpet of…

亚细胞过程 · 定量生物学 2018-08-02 Simon P Pearce , Matthias Heil , Oliver E Jensen , Gareth W Jones , Andreas Prokop

Kinesin and related motor proteins utilize ATP fuel to propel themselves along the external surface of microtubules in a processive and directional fashion. We show that the observed step-like motion is possible through time varying charge…

生物大分子 · 定量生物学 2007-05-23 A. Ciudad , J. M. Sancho , G. P. Tsironis

Mixtures of microtubules and molecular motors form active materials with diverse dynamical behaviors that vary based on their constituents' molecular properties. We map the non-equilibrium phase diagram of microtubules and tip-accumulating…

软凝聚态物质 · 物理学 2021-08-04 Bezia Lemma , Noah P. Mitchell , Radhika Subramanian , Daniel J. Needleman , Zvonimir Dogic

The cytoskeleton is regulated by a plethora of enzymes that influence the stability and dynamics of cytoskeletal filaments. Molecular motors of the kinesin-8 protein family depolymerise microtubules in a length-dependent manner, and…

亚细胞过程 · 定量生物学 2014-10-29 Louis Reese , Anna Melbinger , Erwin Frey

The cytoskeleton relies on diverse populations of motors, filaments, and binding proteins acting in concert to enable non-equilibrium processes ranging from mitosis to chemotaxis. Its versatile reconfigurability, programmed by interactions…

Among the multiple steps constituting the kinesin's mechanochemical cycle, one of the most interesting events is observed when kinesins move an 8-nm step from one microtubule (MT)-binding site to another. The stepping motion that occurs…

软凝聚态物质 · 物理学 2009-11-13 Changbong Hyeon , José N. Onuchic

Biomolecular motor proteins that generate forces by consuming chemical energy obtained from ATP hydrolysis are pivotal for organizing broad cytoskeletal structures in living cells. The control of such cytoskeletal structures benefits…

软凝聚态物质 · 物理学 2021-12-30 Shunya Araki , Kazusa Beppu , Arif Md. Rashedul Kabir , Akira Kakugo , Yusuke T. Maeda

A model for the unidirectional movement of dynein is presented based on structural observations and biochemical experimental results available. In this model, the binding affinity of dynein for microtubule is independent of its nucleotide…

生物大分子 · 定量生物学 2007-08-18 Ping Xie , Shuo-Xing Dou , Peng-Ye Wang

Motor-proteins are responsible for transport inside cells. Harnessing their activity is key towards developing new nano-technologies, or functional biomaterials. Cytoskeleton-like networks, recently tailored in vitro, result from the…

软凝聚态物质 · 物理学 2016-06-21 Pau Guillamat , Jordi Ignés-Mullol , Francesc Sagués

Kinesins move processively toward the plus end of microtubules by hydrolyzing ATP for each step. From an enzymatic perspective, the mechanism of mechanical motion coupled to the nucleotide chemistry is often well explained using a…

生物物理 · 物理学 2019-03-27 Changbong Hyeon , Stefan Klumpp , José N. Onuchic

Cytoskeletal networks are foundational examples of active matter and central to self-organized structures in the cell. In vivo, these networks are active and heavily crosslinked. Relating their large-scale dynamics to properties of their…

Kinesins are processive motor proteins that move along microtubules in a stepwise manner, and their motion is powered by the hydrolysis of ATP. Recent experiments have investigated the coupling between the individual steps of single kinesin…

软凝聚态物质 · 物理学 2009-11-10 Anatoly B. Kolomeisky , Evgeny B. Stukalin , Alex A. Popov
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