IDEAS home Printed from https://ideas.repec.org/a/plo/pcbi00/1003329.html
   My bibliography  Save this article

Mapping the Structural and Dynamical Features of Kinesin Motor Domains

Author

Listed:
  • Guido Scarabelli
  • Barry J Grant

Abstract

Kinesin motor proteins drive intracellular transport by coupling ATP hydrolysis to conformational changes that mediate directed movement along microtubules. Characterizing these distinct conformations and their interconversion mechanism is essential to determining an atomic-level model of kinesin action. Here we report a comprehensive principal component analysis of 114 experimental structures along with the results of conventional and accelerated molecular dynamics simulations that together map the structural dynamics of the kinesin motor domain. All experimental structures were found to reside in one of three distinct conformational clusters (ATP-like, ADP-like and Eg5 inhibitor-bound). These groups differ in the orientation of key functional elements, most notably the microtubule binding α4–α5, loop8 subdomain and α2b-β4-β6-β7 motor domain tip. Group membership was found not to correlate with the nature of the bound nucleotide in a given structure. However, groupings were coincident with distinct neck-linker orientations. Accelerated molecular dynamics simulations of ATP, ADP and nucleotide free Eg5 indicate that all three nucleotide states could sample the major crystallographically observed conformations. Differences in the dynamic coupling of distal sites were also evident. In multiple ATP bound simulations, the neck-linker, loop8 and the α4–α5 subdomain display correlated motions that are absent in ADP bound simulations. Further dissection of these couplings provides evidence for a network of dynamic communication between the active site, microtubule-binding interface and neck-linker via loop7 and loop13. Additional simulations indicate that the mutations G325A and G326A in loop13 reduce the flexibility of these regions and disrupt their couplings. Our combined results indicate that the reported ATP and ADP-like conformations of kinesin are intrinsically accessible regardless of nucleotide state and support a model where neck-linker docking leads to a tighter coupling of the microtubule and nucleotide binding regions. Furthermore, simulations highlight sites critical for large-scale conformational changes and the allosteric coupling between distal functional sites.Author Summary: Kinesin motor proteins transport cargo along microtubule tracks to support essential cellular functions including cell growth, axonal signaling and the separation of chromosomes during cell division. All kinesins contain one or more conserved motor domains that modulate binding and movement along microtubules via cycles of ATP hydrolysis. Important conformational transitions occurring during this cycle have been characterized with extensive crystallographic studies. However, the link between the observed conformations and the mechanisms involved in conformational change and microtubule interaction modulation remain unclear. Here we describe a comprehensive principal component analysis of available motor domain crystallographic structures supplemented with extensive unbiased conventional and accelerated molecular dynamics simulations that together characterize the response of kinesin motor domains to ATP binding and hydrolysis. Our studies reveal atomic details of conformational transitions, as well as novel nucleotide-dependent dynamical couplings, of distal regions and residues potentially important for the allosteric link between nucleotide and microtubule binding sites.

Suggested Citation

  • Guido Scarabelli & Barry J Grant, 2013. "Mapping the Structural and Dynamical Features of Kinesin Motor Domains," PLOS Computational Biology, Public Library of Science, vol. 9(11), pages 1-13, November.
  • Handle: RePEc:plo:pcbi00:1003329
    DOI: 10.1371/journal.pcbi.1003329
    as

    Download full text from publisher

    File URL: https://journals.plos.org/ploscompbiol/article?id=10.1371/journal.pcbi.1003329
    Download Restriction: no

    File URL: https://journals.plos.org/ploscompbiol/article/file?id=10.1371/journal.pcbi.1003329&type=printable
    Download Restriction: no

    File URL: https://libkey.io/10.1371/journal.pcbi.1003329?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    References listed on IDEAS

    as
    1. Sarah Rice & Abel W. Lin & Daniel Safer & Cynthia L. Hart & Nariman Naber & Bridget O. Carragher & Shane M. Cain & Elena Pechatnikova & Elizabeth M. Wilson-Kubalek & Michael Whittaker & Edward Pate & , 1999. "A structural change in the kinesin motor protein that drives motility," Nature, Nature, vol. 402(6763), pages 778-784, December.
    2. Barry J Grant & Alemayehu A Gorfe & J Andrew McCammon, 2009. "Ras Conformational Switching: Simulating Nucleotide-Dependent Conformational Transitions with Accelerated Molecular Dynamics," PLOS Computational Biology, Public Library of Science, vol. 5(3), pages 1-10, March.
    Full references (including those not matched with items on IDEAS)

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Doan Tuong-Van Le & Thomas Eckert & Günther Woehlke, 2013. "Computer Simulation of Assembly and Co-operativity of Hexameric AAA ATPases," PLOS ONE, Public Library of Science, vol. 8(7), pages 1-19, July.
    2. César Augusto F de Oliveira & Barry J Grant & Michelle Zhou & J Andrew McCammon, 2011. "Large-Scale Conformational Changes of Trypanosoma cruzi Proline Racemase Predicted by Accelerated Molecular Dynamics Simulation," PLOS Computational Biology, Public Library of Science, vol. 7(10), pages 1-7, October.
    3. Takema Sasaki & Kei Saito & Daisuke Inoue & Henrik Serk & Yuki Sugiyama & Edouard Pesquet & Yuta Shimamoto & Yoshihisa Oda, 2023. "Confined-microtubule assembly shapes three-dimensional cell wall structures in xylem vessels," Nature Communications, Nature, vol. 14(1), pages 1-14, December.
    4. Hongyang Li & Xin-Qiu Yao & Barry J Grant, 2018. "Comparative structural dynamic analysis of GTPases," PLOS Computational Biology, Public Library of Science, vol. 14(11), pages 1-19, November.
    5. Chunting Zhang & Changmiao Guo & Ryan W. Russell & Caitlin M. Quinn & Mingyue Li & John C. Williams & Angela M. Gronenborn & Tatyana Polenova, 2022. "Magic-angle-spinning NMR structure of the kinesin-1 motor domain assembled with microtubules reveals the elusive neck linker orientation," Nature Communications, Nature, vol. 13(1), pages 1-12, December.
    6. Mireia Andreu-Carbó & Cornelia Egoldt & Marie-Claire Velluz & Charlotte Aumeier, 2024. "Microtubule damage shapes the acetylation gradient," Nature Communications, Nature, vol. 15(1), pages 1-14, December.
    7. Matthieu P. M. H. Benoit & Lu Rao & Ana B. Asenjo & Arne Gennerich & Hernando Sosa, 2024. "Cryo-EM unveils kinesin KIF1A’s processivity mechanism and the impact of its pathogenic variant P305L," Nature Communications, Nature, vol. 15(1), pages 1-18, December.
    8. Juan Manuel Ortiz-Sanchez & Sara E Nichols & Jacqueline Sayyah & Joan Heller Brown & J Andrew McCammon & Barry J Grant, 2012. "Identification of Potential Small Molecule Binding Pockets on Rho Family GTPases," PLOS ONE, Public Library of Science, vol. 7(7), pages 1-13, July.
    9. Ju Zhou & Anhui Wang & Yinlong Song & Nan Liu & Jia Wang & Yan Li & Xin Liang & Guohui Li & Huiying Chu & Hong-Wei Wang, 2023. "Structural insights into the mechanism of GTP initiation of microtubule assembly," Nature Communications, Nature, vol. 14(1), pages 1-17, December.
    10. Ammu Prasanna Kumar & Suryani Lukman, 2018. "Allosteric binding sites in Rab11 for potential drug candidates," PLOS ONE, Public Library of Science, vol. 13(6), pages 1-46, June.
    11. Neeru Sharma & Uddhavesh Sonavane & Rajendra Joshi, 2020. "Comparative MD simulations and advanced analytics based studies on wild-type and hot-spot mutant A59G HRas," PLOS ONE, Public Library of Science, vol. 15(10), pages 1-22, October.
    12. Suryani Lukman & Barry J Grant & Alemayehu A Gorfe & Guy H Grant & J Andrew McCammon, 2010. "The Distinct Conformational Dynamics of K-Ras and H-Ras A59G," PLOS Computational Biology, Public Library of Science, vol. 6(9), pages 1-9, September.
    13. Abhijeet Kapoor & Alex Travesset, 2014. "Mechanism of the Exchange Reaction in HRAS from Multiscale Modeling," PLOS ONE, Public Library of Science, vol. 9(10), pages 1-12, October.
    14. Tianyang Liu & Fiona Shilliday & Alexander D. Cook & Mohammad Zeeshan & Declan Brady & Rita Tewari & Colin J. Sutherland & Anthony J. Roberts & Carolyn A. Moores, 2022. "Mechanochemical tuning of a kinesin motor essential for malaria parasite transmission," Nature Communications, Nature, vol. 13(1), pages 1-17, December.
    15. Rudy Clausen & Buyong Ma & Ruth Nussinov & Amarda Shehu, 2015. "Mapping the Conformation Space of Wildtype and Mutant H-Ras with a Memetic, Cellular, and Multiscale Evolutionary Algorithm," PLOS Computational Biology, Public Library of Science, vol. 11(9), pages 1-26, September.

    More about this item

    Statistics

    Access and download statistics

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:plo:pcbi00:1003329. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: ploscompbiol (email available below). General contact details of provider: https://journals.plos.org/ploscompbiol/ .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.