Abstract

Kinesin-14 microtubule-based motors have an N-terminal tail attaching the catalytic core to its load and usually move towards microtubule minus ends, whilst most other kinesins have a C-terminal tail and move towards plus ends. Loss of conserved sequences external to the motor domain causes kinesin-14 to switch to plus-end motility, showing that an N-terminal attachment is compatible with plus-end motility. However, there has been no systematic study on the role of attachment position in minus-end motility. We therefore examined the motility of monomeric kinesin-14s differing only in their attachment point. We find that a C-terminal attachment point causes kinesin-14s to become plus-end-directed, with microtubule corkscrewing rotation direction and pitch in motility assays similar to that of kinesin-1, suggesting that both C-kinesin kinesins-14 and N-kinesin kinesin-1 share a highly conserved catalytic core function with an intrinsic plus-end bias. Thus, an N-terminal attachment is one of the requirements for minus-end motility in kinesin-14.

Details

Title
Anchoring geometry is a significant factor in determining the direction of kinesin-14 motility on microtubules
Author
Yamagishi, Masahiko 1 ; Sumiyoshi, Rieko 1 ; Drummond, Douglas R. 2 ; Yajima, Junichiro 3 

 The University of Tokyo, Department of Life Sciences, Graduate School of Arts and Sciences, Tokyo, Japan (GRID:grid.26999.3d) (ISNI:0000 0001 2151 536X) 
 Kyushu University, Centre for Promotion of International Education and Research, Faculty of Agriculture, Fukuoka, Japan (GRID:grid.177174.3) (ISNI:0000 0001 2242 4849); Kyushu University, School of Interdisciplinary Science and Innovation, Fukuoka, Japan (GRID:grid.177174.3) (ISNI:0000 0001 2242 4849) 
 The University of Tokyo, Department of Life Sciences, Graduate School of Arts and Sciences, Tokyo, Japan (GRID:grid.26999.3d) (ISNI:0000 0001 2151 536X); Komaba Institute for Science, The University of Tokyo, Tokyo, Japan (GRID:grid.26999.3d) (ISNI:0000 0001 2151 536X); The University of Tokyo, Research Center for Complex Systems Biology, Tokyo, Japan (GRID:grid.26999.3d) (ISNI:0000 0001 2151 536X); Universal Biological Institute, The University of Tokyo, Tokyo, Japan (GRID:grid.26999.3d) (ISNI:0000 0001 2151 536X) 
Publication year
2022
Publication date
2022
Publisher
Nature Publishing Group
e-ISSN
20452322
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2714222590
Copyright
© The Author(s) 2022. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.