Developmentally regulated GTP binding protein 1 (DRG1) controls microtubule dynamics

Abstract

The mitotic spindle, essential for segregating the sister chromatids into the two evolving daughter cells, is composed of highly dynamic cytoskeletal filaments, the microtubules. The dynamics of microtubules are regulated by numerous microtubule associated proteins. We identify here Developmentally regulated GTP binding protein 1 (DRG1) as a microtubule binding protein with diverse microtubule-associated functions. In vitro, DRG1 can diffuse on microtubules, promote their polymerization, drive microtubule formation into bundles, and stabilize microtubules. HeLa cells with reduced DRG1 levels show delayed progression from prophase to anaphase because spindle formation is slowed down. To perform its microtubule-associated functions, DRG1, although being a GTPase, does not require GTP hydrolysis. However, all domains are required as truncated versions show none of the mentioned activities besides microtubule binding.

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Item Type:	Article
Authors/Creators:	Schellhaus, A.K. Moreno-Andrés, D. Chugh, M. Yokoyama, H. Moschopoulou, A. De, S. https://orcid.org/0000-0003-1675-0773 Bono, F. Hipp, K. Schäffer, E. Antonin, W.
Copyright, Publisher and Additional Information:	© The Author(s) 2017. Open Access: This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
Keywords:	Cell Division; Epithelial Cells; GTP-Binding Proteins; HeLa Cells; Humans; Microtubules; Protein Binding; Protein Multimerization
Dates:	Accepted: 3 August 2017 Published (online): 30 August 2017 Published: 30 August 2017
Institution:	The University of Sheffield
Academic Units:	The University of Sheffield > Faculty of Medicine, Dentistry and Health (Sheffield) > Department of Neuroscience (Sheffield)
Depositing User:	Symplectic Sheffield
Date Deposited:	01 May 2020 16:35
Last Modified:	02 May 2020 19:50
Status:	Published
Publisher:	Springer Science and Business Media LLC
Refereed:	Yes
Identification Number:	10.1038/s41598-017-10088-5
Related URLs:	PubMed URL
Open Archives Initiative ID (OAI ID):	oai:eprints.whiterose.ac.uk:160180

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Developmentally regulated GTP binding protein 1 (DRG1) controls microtubule dynamics

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