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Tuning multiple motor travel via single motor velocity.

ABSTRACT: Microtubule-based molecular motors often work in small groups to transport cargos in cells. A key question in understanding transport (and its regulation in vivo) is to identify the sensitivity of multiple-motor-based motion to various single molecule properties. Whereas both single-motor travel distance and microtubule binding rate have been demonstrated to contribute to cargo travel, the role of single-motor velocity is yet to be explored. Here, we recast a previous theoretical study, and make explicit a potential contribution of velocity to cargo travel. We test this possibility experimentally, and demonstrate a strong negative correlation between single-motor velocity and cargo travel for transport driven by two motors. Our study thus discovers a previously unappreciated role of single-motor velocity in regulating multiple-motor transport.

SUBMITTER: Xu J

PROVIDER: S-EPMC3418377 | biostudies-literature | 2012 Sep

REPOSITORIES: biostudies-literature

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Tuning multiple motor travel via single motor velocity.

Xu Jing J Shu Zhanyong Z King Stephen J SJ Gross Steven P SP

Traffic (Copenhagen, Denmark) 20120703 9

Microtubule-based molecular motors often work in small groups to transport cargos in cells. A key question in understanding transport (and its regulation in vivo) is to identify the sensitivity of multiple-motor-based motion to various single molecule properties. Whereas both single-motor travel distance and microtubule binding rate have been demonstrated to contribute to cargo travel, the role of single-motor velocity is yet to be explored. Here, we recast a previous theoretical study, and make ...[more]

PMID: 22672518

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