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Stimulation of Microtubule Aster Formation and Spindle Assembly by the Small GTPase Ran

Wilde, Andrew, Zheng, Yixian·1999·Science

Abstract

Ran, a small guanosine triphosphatase, is suggested to have additional functions beyond its well-characterized role in nuclear trafficking. Guanosine triphosphate–bound Ran, but not guanosine diphosphate–bound Ran, stimulated polymerization of astral microtubules from centrosomes assembled on Xenopus sperm. Moreover, a Ran allele with a mutation in the effector domain (RanL43E) induced the formation of microtubule asters and spindle assembly, in the absence of sperm nuclei, in a γTuRC (γ-tubulin ring complex)– and XMAP215 ( Xenopus microtubule associated protein)–dependent manner. Therefore, Ran could be a key signaling molecule regulating microtubule polymerization during mitosis.

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Metadata

Authors
Wilde, A., & Zheng, Y.
Venue
Science
Published
1999-05-21
Volume
284
Issue
5418
Pages
1359-1362
ISSN
  • 0036-8075 (ISSN-L)
  • 1095-9203
OpenAlex
W1966723276
Cited by
395
References
0
FWCI
11.57
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Stimulation of Microtubule Aster Formation and Spindle Assembly by the Small GTPase Ran. https://app.cochat.ai/papers/10.1126/science.284.5418.1359
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Wilde, A., & Zheng, Y. (1999). Stimulation of Microtubule Aster Formation and Spindle Assembly by the Small GTPase Ran. Science. https://doi.org/10.1126/science.284.5418.1359

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.