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dc.contributor.authorLi, Xin
Kolomeisky, Anatoly B.
dc.date.accessioned 2014-12-10T15:47:10Z
dc.date.available 2014-12-10T15:47:10Z
dc.date.issued 2014
dc.identifier.citation Li, Xin and Kolomeisky, Anatoly B.. "Theoretical Analysis of Microtubule Dynamics at All Times." The Journal of Physical Chemistry B, 118, no. 48 (2014) 13777-13784. http://dx.doi.org/10.1021/jp507206f.
dc.identifier.urihttp://hdl.handle.net/1911/78733
dc.description.abstract Microtubules are biopolymers consisting of tubulin dimer subunits. As a major component of cytoskeleton they are essential for supporting most important cellular processes such as cell division, signaling, intracellular transport and cell locomotion. The hydrolysis of guanosine triphosphate (GTP) molecules attached to each tubulin subunit supports the nonequilibrium nature of microtubule dynamics. One of the most spectacular properties of microtubules is their dynamic instability when their growth from continuous attachment of tubulin dimers stochastically alternates with periods of shrinking. Despite the critical importance of this process to all cellular activities, its mechanism remains not fully understood. We investigated theoretically microtubule dynamics at all times by analyzing explicitly temporal evolution of various length clusters of unhydrolyzed subunits. It is found that the dynamic behavior of microtubules depends strongly on initial conditions. Our theoretical findings provide a microscopic explanation for recent experiments which found that the frequency of catastrophes increases with the lifetime of microtubules. It is argued that most growing microtubule configurations cannot transit in one step into a shrinking state, leading to a complex overall temporal behavior. Theoretical calculations combined with Monte Carlo computer simulations are also directly compared with experimental observations, and good agreement is found.
dc.language.iso eng
dc.rights This is an author's peer-reviewed final manuscript, as accepted by the publisher. The published article is copyrighted by the American Chemical Society.
dc.title Theoretical Analysis of Microtubule Dynamics at All Times
dc.type Journal article
dc.contributor.funder Welch Foundation
dc.contributor.funder National Science Foundation
dc.citation.journalTitle The Journal of Physical Chemistry B
dc.contributor.org Center for Theoretical Biological Physics
dc.subject.keywordcytoskeleton proteins
dynamic instability
aging
dynamic processes
dc.citation.volumeNumber 118
dc.citation.issueNumber 48
dc.contributor.publisher American Chemical Society
dc.type.dcmi Text
dc.identifier.doihttp://dx.doi.org/10.1021/jp507206f
dc.identifier.pmid 25390471
dc.identifier.grantID C-1559 (Welch Foundation)
dc.identifier.grantID CHE-1360979 (National Science Foundation)
dc.identifier.grantID PHY-1427654 (National Science Foundation)
dc.type.publication post-print
dc.citation.firstpage 13777
dc.citation.lastpage 13784


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