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

Journal Article · · Nature (London)
 [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

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.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
1571970
Journal Information:
Nature (London), Vol. 566, Issue 7744; ISSN 0028-0836
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 24 works
Citation information provided by
Web of Science

References (35)

Direction determination in the minus-end-directed kinesin motor ncd journal October 1998
Targeted molecular dynamics: A new approach for searching pathways of conformational transitions journal June 1994
Structure and Functional Role of Dynein's Microtubule-Binding Domain journal December 2008
The 2.8 Å crystal structure of the dynein motor domain journal March 2012
Helix sliding in the stalk coiled coil of dynein couples ATPase and microtubule binding journal February 2009
Scalable molecular dynamics with NAMD journal January 2005
Structure of human cytoplasmic dynein-2 primed for its power stroke journal December 2014
Dynein achieves processive motion using both stochastic and coordinated stepping journal January 2012
Optimization of the Additive CHARMM All-Atom Protein Force Field Targeting Improved Sampling of the Backbone ϕ, ψ and Side-Chain χ 1 and χ 2 Dihedral Angles journal August 2012
An extended microtubule-binding structure within the dynein motor domain journal December 1997
Cytoplasmic dynein transports cargos via load-sharing between the heads journal November 2014
The power stroke of myosin VI and the basis of reverse directionality journal December 2006
Structural mechanism of the dynein power stroke journal April 2014
High-Resolution Microtubule Structures Reveal the Structural Transitions in αβ-Tubulin upon GTP Hydrolysis journal May 2014
Functions and mechanics of dynein motor proteins journal September 2013
Creating biomolecular motors based on dynein and actin-binding proteins journal November 2016
Single-Molecule Analysis of Dynein Processivity and Stepping Behavior journal July 2006
Optical trapping journal September 2004
Force-Induced Bidirectional Stepping of Cytoplasmic Dynein journal November 2007
Insights into dynein motor domain function from a 3.3-Å crystal structure journal March 2012
Direct observation shows superposition and large scale flexibility within cytoplasmic dynein motors moving along microtubules journal September 2015
Kinesin’s Front Head Is Gated by the Backward Orientation of Its Neck Linker journal March 2015
Myosin V Walks Hand-Over-Hand: Single Fluorophore Imaging with 1.5-nm Localization journal June 2003
Cytoplasmic dynein regulates its attachment to microtubules via nucleotide state-switched mechanosensing at multiple AAA domains journal May 2015
Angular measurements of the dynein ring reveal a stepping mechanism dependent on a flexible stalk journal May 2017
Cytoplasmic Dynein Moves Through Uncoordinated Stepping of the AAA+ Ring Domains journal December 2011
AAA+ Ring and Linker Swing Mechanism in the Dynein Motor journal February 2009
Structural Basis for Microtubule Binding and Release by Dynein journal September 2012
Tension on the linker gates the ATP-dependent release of dynein from microtubules journal August 2014
Insights into the Distinct Mechanisms of Action of Taxane and Non-Taxane Microtubule Stabilizers from Cryo-EM Structures journal March 2017
Bidirectional Helical Motility of Cytoplasmic Dynein around Microtubules journal January 2015
Kinesin's Front Head is Gated by the Backward Orientation of its Neck Linker journal February 2016
Determination of microtubule polarity by cryo-electron microscopy journal September 1996
The Affinity of the Dynein Microtubule-binding Domain Is Modulated by the Conformation of Its Coiled-coil Stalk journal April 2005
Bidirectional helical motility of cytoplasmic dynein around microtubules journal July 2014

Cited By (8)

Pac1/LIS1 stabilizes an uninhibited conformation of dynein to coordinate its localization and activity journal April 2020
Lis1 activates dynein motility by modulating its pairing with dynactin journal April 2020
Dynein harnesses active fluctuations of microtubules for faster movement journal January 2020
Cargo adaptors regulate stepping and force generation of mammalian dynein–dynactin journal September 2019
Structural basis for two-way communication between dynein and microtubules journal February 2020
Coupling of ATPase activity, microtubule binding, and mechanics in the dynein motor domain journal May 2019
Small stepping motion of processive dynein revealed by load-free high-speed single-particle tracking journal January 2020
Processivity of molecular motors under vectorial loads journal August 2020

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