Navigation Strategies of Motor Proteins on Decorated Tracks

Z. Bertalan, Z. Budrikis, C.A.M. La Porta, S. Zapperi

Research output: Contribution to journalArticleScientificpeer-review

4 Citations (Scopus)
165 Downloads (Pure)

Abstract

Motor proteins display widely different stepping patterns as they move on microtubule tracks, from the deterministic linear or helical motion performed by the protein kinesin to the uncoordinated random steps made by dynein. How these different strategies produce an efficient navigation system needed to ensure correct cellular functioning is still unclear. Here, we show by numerical simulations that deterministic and random motor steps yield different outcomes when random obstacles decorate the microtubule tracks: kinesin moves faster on clean tracks but its motion is strongly hindered on decorated tracks, while dynein is slower on clean tracks but more efficient in avoiding obstacles. Further simulations indicate that dynein’s advantage on decorated tracks is due to its ability to step backwards. Our results explain how different navigation strategies are employed by the cell to optimize motor driven cargo transport.
Original languageEnglish
Article numbere0136945
Pages (from-to)1-12
JournalPloS one
Volume10
Issue number8
DOIs
Publication statusPublished - 2015
MoE publication typeA1 Journal article-refereed

Keywords

  • proteins

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