Misregulation of cell cycle-dependent methylation of budding yeast CENP-A contributes to chromosomal instability.
Misregulation of cell cycle-dependent methylation of budding yeast CENP-A contributes to chromosomal instability.
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DOI:
10.1091/mbc.e23-03-0108
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发表时间:
2023-09-01
影响因子:
3.3
通讯作者:
Basrai, Munira A.
中科院分区:
文献类型:
--
作者:
Mishra, Prashant K.;Au, Wei-Chun;Castineira, Pedro G.;Ali, Nazrin;Stanton, John;Boeckmann, Lars;Takahashi, Yoshimitsu;Costanzo, Michael;Boone, Charles;Bloom, Kerry S.;Thorpe, Peter H.;Basrai, Munira A.
Centromere (CEN) identity is specified epigenetically by specialized nucleosomes containing evolutionarily conserved CEN-specific histone H3 variant CENP-A (Cse4 in Saccharomyces cerevisiae, CENP-A in humans), which is essential for faithful chromosome segregation. However, the epigenetic mechanisms that regulate Cse4 function have not been fully defined. In this study, we show that cell cycle-dependent methylation of Cse4-R37 regulates kinetochore function and high-fidelity chromosome segregation. We generated a custom antibody that specifically recognizes methylated Cse4-R37 and showed that methylation of Cse4 is cell cycle regulated with maximum levels of methylated Cse4-R37 and its enrichment at the CEN chromatin occur in the mitotic cells. Methyl-mimic cse4-R37F mutant exhibits synthetic lethality with kinetochore mutants, reduced levels of CEN-associated kinetochore proteins and chromosome instability (CIN), suggesting that mimicking the methylation of Cse4-R37 throughout the cell cycle is detrimental to faithful chromosome segregation. Our results showed that SPOUT methyltransferase Upa1 contributes to methylation of Cse4-R37 and overexpression of UPA1 leads to CIN phenotype. In summary, our studies have defined a role for cell cycle-regulated methylation of Cse4 in high-fidelity chromosome segregation and highlight an important role of epigenetic modifications such as methylation of kinetochore proteins in preventing CIN, an important hallmark of human cancers.
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影响因子:
14.9
作者:
Schwer B;Erdjument-Bromage H;Shuman S
通讯作者:
Shuman S
DOI:
10.1083/jcb.201405028
发表时间:
2014-10-27
期刊:
The Journal of cell biology
影响因子:
--
作者:
Snider CE;Stephens AD;Kirkland JG;Hamdani O;Kamakaka RT;Bloom K
通讯作者:
Bloom K
影响因子:
3.3
作者:
Nguyen, Tra My Tran;Munhoven, Arno;Samel-Pommerencke, Anke;Kshirsagar, Rucha;Cuomo, Alessandro;Bonaldi, Tiziana;Ehrenhofer-Murray, Ann E.
通讯作者:
Ehrenhofer-Murray, Ann E.
影响因子:
7.5
作者:
Srivastava S;Zasadzińska E;Foltz DR
通讯作者:
Foltz DR
影响因子:
3.9
作者:
Lipson, Rebecca S.;Webb, Kristofor J.;Clarke, Steven G.
通讯作者:
Clarke, Steven G.