Bi

Mitotic centrosomes are assembled upon inter-dependent solid- and liquid-like scaffolds

Datum
22.09.2023
Zeit
11:00 - 12:00
Sprecher
Isaac Siu-Shing Wong
Zugehörigkeit
Sir William Dunn School of Pathology, University of Oxford
Sprache
en
Hauptthema
Biologie
Host
Tony Hyman
Beschreibung
Mitotic centrosomes are formed when centrioles recruit pericentriolar material (PCM) around themselves. The PCM comprises several hundred proteins, and its physical nature is hotly debated. In flies, Spd-2/CEP192 recruits Polo/PLK-1 and Cnn/CDK5RAP2 (fly/human nomenclature) to the centriole, and these form a solid-like scaffold that recruits PCM clients. Here we show that Spd-2 also recruits a liquid-like scaffold to centrioles that depends on Aurora A and TACC and is analogous to the liquid-like spindle domain (LISD) in mammalian acentrosomal meiotic spindles. The Polo/Cnn and Aurora A/TACC scaffolds can assemble and recruit PCM clients independently of one another, but centrosome function is severely perturbed in the absence of either scaffold. Thus, mitotic centrosomes in flies assemble upon co-existing solid- and liquid-like scaffolds organised by Spd-2/CEP192 and either Polo/PLK1 or Aurora A, respectively.

Letztmalig verändert: 23.09.2023, 07:35:33

Veranstaltungsort

Max Planck Institute of Molecular Cell Biology and Genetics (MPI-CBG Galleria)Pfotenhauerstraße10801307Dresden
Telefon
+49 351 210-0
Fax
+49 351 210-2000
E-Mail
MPI-CBG
Homepage
http://www.mpi-cbg.de

Veranstalter

Max Planck Institute of Molecular Cell Biology and GeneticsPfotenhauerstraße10801307Dresden
Telefon
+49 351 210-0
Fax
+49 351 210-2000
E-Mail
MPI-CBG
Homepage
http://www.mpi-cbg.de
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