Bora phosphorylation substitutes in trans for T-loop phosphorylation in Aurora A to promote mitotic entry.
Bora phosphorylation substitutes in trans for T-loop phosphorylation in Aurora A to promote mitotic entry.
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DOI:
10.1038/s41467-021-21922-w
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发表时间:
2021-03-26
影响因子:
16.6
通讯作者:
Pintard L
中科院分区:
文献类型:
--
作者:
Tavernier N;Thomas Y;Vigneron S;Maisonneuve P;Orlicky S;Mader P;Regmi SG;Van Hove L;Levinson NM;Gasmi-Seabrook G;Joly N;Poteau M;Velez-Aguilera G;Gavet O;Castro A;Dasso M;Lorca T;Sicheri F;Pintard L
Polo-like kinase 1 (Plk1) is instrumental for mitotic entry and progression. Plk1 is activated by phosphorylation on a conserved residue Thr210 in its activation segment by the Aurora A kinase (AURKA), a reaction that critically requires the co-factor Bora phosphorylated by a CyclinA/B-Cdk1 kinase. Here we show that phospho-Bora is a direct activator of AURKA kinase activity. We localize the key determinants of phospho-Bora function to a 100 amino acid region encompassing two short Tpx2-like motifs and a phosphoSerine-Proline motif at Serine 112, through which Bora binds AURKA. The latter substitutes in trans for the Thr288 phospho-regulatory site of AURKA, which is essential for an active conformation of the kinase domain. We demonstrate the importance of these determinants for Bora function in mitotic entry both in Xenopus egg extracts and in human cells. Our findings unveil the activation mechanism of AURKA that is critical for mitotic entry. Tavernier et al. decipher the mechanism by which the intrinsically disordered protein Bora, phosphorylated by Cyclin-Cdk, potentiates AURKA activity towards Polo-like kinase 1. Furthermore, they demonstrate the importance of this mechanism for timely mitotic entry in Xenopus and human cells.
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DOI:
10.15252/embj.201797902
发表时间:
2018-04-13
期刊:
The EMBO journal
影响因子:
--
作者:
Burgess SG;Mukherjee M;Sabir S;Joseph N;Gutiérrez-Caballero C;Richards MW;Huguenin-Dezot N;Chin JW;Kennedy EJ;Pfuhl M;Royle SJ;Gergely F;Bayliss R
通讯作者:
Bayliss R
影响因子:
5.8
作者:
Pintard L;Archambault V
通讯作者:
Archambault V
影响因子:
14.8
作者:
Cyphers, Soreen;Ruff, Emily F.;Levinson, Nicholas M.
通讯作者:
Levinson, Nicholas M.
影响因子:
48
作者:
Gibson, Daniel G.;Young, Lei;Smith, Hamilton O.
通讯作者:
Smith, Hamilton O.
影响因子:
5.1
作者:
Harashima, Hirofumi;Schnittger, Arp
通讯作者:
Schnittger, Arp