Multi-site phosphorylation of yeast Mif2/CENP-C promotes inner kinetochore assembly.
Curr Biol
; 33(4): 688-696.e6, 2023 02 27.
Article
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| MEDLINE
| ID: mdl-36736323
ABSTRACT
Kinetochores control eukaryotic chromosome segregation by connecting chromosomal centromeres to spindle microtubules. Duplication of centromeric DNA necessitates kinetochore disassembly and subsequent reassembly on nascent sisters. To search for a regulatory mechanism that controls the earliest steps of this process, we studied Mif2/CENP-C, an essential basal component of the kinetochore. We found that phosphorylation of a central region of Mif2 (Mif2-PEST) enhances inner kinetochore assembly. Eliminating Mif2-PEST phosphorylation sites progressively impairs cellular fitness. The most severe Mif2-PEST mutations are lethal in cells lacking otherwise non-essential inner kinetochore factors. These data show that multi-site phosphorylation of Mif2/CENP-C controls inner kinetochore assembly.
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Texto completo:
1
Bases de datos:
MEDLINE
Asunto principal:
Cinetocoros
/
Proteínas de Saccharomyces cerevisiae
Idioma:
En
Revista:
Curr Biol
Asunto de la revista:
BIOLOGIA
Año:
2023
Tipo del documento:
Article