The role of NEDD1 phosphorylation by Aurora A in chromosomal microtubule nucleation and spindle function
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- dc.contributor.author Pinyol, Roserca
- dc.contributor.author Scrofani, Jacopo, 1984-ca
- dc.contributor.author Vernos, Isabelle, 1959-ca
- dc.date.accessioned 2015-04-30T07:23:50Z
- dc.date.available 2015-04-30T07:23:50Z
- dc.date.issued 2013ca
- dc.description.abstract Chromatin directs de novo microtubule (MT) nucleation in dividing cells by generating a gradient of GTP-bound Ran protein (RanGTP) that controls the activity of a number of spindle assembly factors (SAFs). It is now well established that these MTs are essential for the assembly of a functional bipolar spindle. Although it has been shown that RanGTP-dependent MT nucleation requires γ-tubulin and a number of RanGTP-regulated proteins, the mechanism involved is still poorly understood. We previously showed that the mitotic kinase Aurora A, which is activated in a RanGTP-dependent manner in mitotic cells, has a role in this pathway. Here we show that Aurora A interacts with and phosphorylates the γTURC adaptor protein NEDD1 at a single residue, Ser405. Ser405 phosphorylation is not required for centrosomal MT nucleation but is critical for MT nucleation in the vicinity of the chromosomes in mitotic cells. Moreover, it is essential for RanGTP aster formation and chromatin-driven MT assembly in Xenopus egg extracts. Our data suggest that one important function of Aurora A in mitotic cells is to promote MT nucleation around the chromatin by phosphorylating NEDD1, and thereby to promote functional spindle assembly.
- dc.description.sponsorship This work was supported by grants Consolider-Ingenio 2010 CENTROSOME_3D CSD2006-00023 and/nBFU2009-10202. J.S. is supported by a PhD student fellowship from La Caixa
- dc.format.mimetype application/pdfca
- dc.identifier.citation Pinyol R, Scrofani J, Vernos I. The role of NEDD1 phosphorylation by Aurora A in chromosomal microtubule nucleation and spindle function. Curr Biol. 2013 Jan 21;23(2):143-9. DOI: 10.1016/j.cub.2012.11.046ca
- dc.identifier.doi http://dx.doi.org/10.1016/j.cub.2012.11.046
- dc.identifier.issn 0960-9822ca
- dc.identifier.uri http://hdl.handle.net/10230/23504
- dc.language.iso engca
- dc.publisher Elsevierca
- dc.relation.ispartof Current Biology. 2013 Jan 21;23(2):143-9
- dc.relation.projectID info:eu-repo/grantAgreement/ES/2PN/CSD2006-00023
- dc.relation.projectID info:eu-repo/grantAgreement/ES/3PN/BFU2009-10202
- dc.rights This is the published version of an article http://dx.doi.org/10.1016/j.cub.2012.11.046 that appeared in the journal Current Biology [© Elsevier Inc ]. It is published in an Open Archive under an Elsevier user license. Details of this licence are available here: http://www.elsevier.com/about/open-access/open-access-policies/oa-license-policy/elsevier-user-licenseca
- dc.rights.accessRights info:eu-repo/semantics/openAccessca
- dc.subject.other Microtúbuls
- dc.subject.other Proteïnes
- dc.subject.other Cicle cel·lular
- dc.title The role of NEDD1 phosphorylation by Aurora A in chromosomal microtubule nucleation and spindle functionca
- dc.type info:eu-repo/semantics/articleca
- dc.type.version info:eu-repo/semantics/publishedVersionca