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Title: Directionality of dynein is controlled by the angle and length of its stalk

Abstract

The ability of cytoskeletal motors to move unidirectionally along filamentous tracks is central to their role in cargo transport, motility and cell division. Kinesin and myosin motor families have a subclass that moves towards the opposite end of the microtubule or actin filament with respect to the rest of the motor family, whereas all dynein motors that have been studied so far exclusively move towards the minus end of the microtubule. Guided by cryo-electron microscopy and molecular dynamics simulations, we sought to understand the mechanism that underpins the directionality of dynein by engineering a Saccharomyces cerevisiae dynein that is directed towards the plus end of the microtubule. Here, using single-molecule assays, we show that elongation or shortening of the coiled-coil stalk that connects the motor to the microtubule controls the helical directionality of dynein around microtubules. By changing the length and angle of the stalk, we successfully reversed the motility towards the plus end of the microtubule. These modifications act by altering the direction in which the dynein linker swings relative to the microtubule, rather than by reversing the asymmetric unbinding of the motor from the microtubule. Lastly, because the length and angle of the dynein stalk are fully conserved amongmore » species, our findings provide an explanation for why all dyneins move towards the minus end of the microtubule.« less

Authors:
 [1];  [2];  [3];  [2];  [4]
  1. Univ. of California, Berkeley, CA (United States). Dept. of Physics
  2. Medical Research Council, Lab. of Molecular Biology, Division of Structural Studies, Cambridge (United Kingdom)
  3. Istanbul Technical Univ., Istanbul, Turkey). Dept. of Mechanical Engineering
  4. Univ. of California, Berkeley, CA (United States). Dept. of Physics; Univ. of California, Berkeley, CA (United States). Dept. of Molecular and Cellular Biology
Publication Date:
Research Org.:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1571970
Grant/Contract Number:  
AC02-05CH11231
Resource Type:
Accepted Manuscript
Journal Name:
Nature (London)
Additional Journal Information:
Journal Name: Nature (London); Journal Volume: 566; Journal Issue: 7744; Journal ID: ISSN 0028-0836
Publisher:
Nature Publishing Group
Country of Publication:
United States
Language:
English
Subject:
59 BASIC BIOLOGICAL SCIENCES

Citation Formats

Can, Sinan, Lacey, Samuel, Gur, Mert, Carter, Andrew P., and Yildiz, Ahmet. Directionality of dynein is controlled by the angle and length of its stalk. United States: N. p., 2019. Web. doi:10.1038/s41586-019-0914-z.
Can, Sinan, Lacey, Samuel, Gur, Mert, Carter, Andrew P., & Yildiz, Ahmet. Directionality of dynein is controlled by the angle and length of its stalk. United States. https://doi.org/10.1038/s41586-019-0914-z
Can, Sinan, Lacey, Samuel, Gur, Mert, Carter, Andrew P., and Yildiz, Ahmet. Wed . "Directionality of dynein is controlled by the angle and length of its stalk". United States. https://doi.org/10.1038/s41586-019-0914-z. https://www.osti.gov/servlets/purl/1571970.
@article{osti_1571970,
title = {Directionality of dynein is controlled by the angle and length of its stalk},
author = {Can, Sinan and Lacey, Samuel and Gur, Mert and Carter, Andrew P. and Yildiz, Ahmet},
abstractNote = {The ability of cytoskeletal motors to move unidirectionally along filamentous tracks is central to their role in cargo transport, motility and cell division. Kinesin and myosin motor families have a subclass that moves towards the opposite end of the microtubule or actin filament with respect to the rest of the motor family, whereas all dynein motors that have been studied so far exclusively move towards the minus end of the microtubule. Guided by cryo-electron microscopy and molecular dynamics simulations, we sought to understand the mechanism that underpins the directionality of dynein by engineering a Saccharomyces cerevisiae dynein that is directed towards the plus end of the microtubule. Here, using single-molecule assays, we show that elongation or shortening of the coiled-coil stalk that connects the motor to the microtubule controls the helical directionality of dynein around microtubules. By changing the length and angle of the stalk, we successfully reversed the motility towards the plus end of the microtubule. These modifications act by altering the direction in which the dynein linker swings relative to the microtubule, rather than by reversing the asymmetric unbinding of the motor from the microtubule. Lastly, because the length and angle of the dynein stalk are fully conserved among species, our findings provide an explanation for why all dyneins move towards the minus end of the microtubule.},
doi = {10.1038/s41586-019-0914-z},
journal = {Nature (London)},
number = 7744,
volume = 566,
place = {United States},
year = {Wed Feb 06 00:00:00 EST 2019},
month = {Wed Feb 06 00:00:00 EST 2019}
}

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Cited by: 24 works
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Works referenced in this record:

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Force-Induced Bidirectional Stepping of Cytoplasmic Dynein
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AAA+ Ring and Linker Swing Mechanism in the Dynein Motor
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Structure of human cytoplasmic dynein-2 primed for its power stroke
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Works referencing / citing this record:

Pac1/LIS1 stabilizes an uninhibited conformation of dynein to coordinate its localization and activity
journal, April 2020

  • Marzo, Matthew G.; Griswold, Jacqueline M.; Markus, Steven M.
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Lis1 activates dynein motility by modulating its pairing with dynactin
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Dynein harnesses active fluctuations of microtubules for faster movement
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Cargo adaptors regulate stepping and force generation of mammalian dynein–dynactin
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Structural basis for two-way communication between dynein and microtubules
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Coupling of ATPase activity, microtubule binding, and mechanics in the dynein motor domain
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Cargo adaptors regulate stepping and force generation of mammalian dynein–dynactin
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Small stepping motion of processive dynein revealed by load-free high-speed single-particle tracking
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Processivity of molecular motors under vectorial loads
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