Methylation of CENP-A/Cse4 on arginine 143 and lysine 131 regulates kinetochore stability in yeast.
Methylation of CENP-A/Cse4 on arginine 143 and lysine 131 regulates kinetochore stability in yeast.
复制标题
CENP-A/Cse4 在精氨酸 143 和赖氨酸 131 上的甲基化调节酵母中着丝粒的稳定性。
DOI:
10.1093/genetics/iyad028
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发表时间:
2023-04-06
期刊:
影响因子:
3.3
通讯作者:
Ehrenhofer-Murray, Ann E.
中科院分区:
文献类型:
--
作者:
Nguyen, Tra My Tran;Munhoven, Arno;Samel-Pommerencke, Anke;Kshirsagar, Rucha;Cuomo, Alessandro;Bonaldi, Tiziana;Ehrenhofer-Murray, Ann E.
Post-translational modifications on histones are well known to regulate chromatin structure and function, but much less information is available on modifications of the centromeric histone H3 variant and their effect at the kinetochore. Here, we report two modifications on the centromeric histone H3 variant CENP-A/Cse4 in the yeast Saccharomyces cerevisiae, methylation at arginine 143 (R143me) and lysine 131 (K131me), that affect centromere stability and kinetochore function. Both R143me and K131me lie in the core region of the centromeric nucleosome, near the entry/exit sites of the DNA from the nucleosome. Unexpectedly, mutation of Cse4-R143 (cse4-R143A) exacerbated the kinetochore defect of mutations in components of the NDC80 complex of the outer kinetochore (spc25-1) and the MIND complex (dsn1-7). The analysis of suppressor mutations of the spc25-1 cse4-R143A growth defect highlighted residues in Spc24, Ndc80, and Spc25 that localize to the tetramerization domain of the NDC80 complex and the Spc24-Spc25 stalk, suggesting that the mutations enhance interactions among NDC80 complex components and thus stabilize the complex. Furthermore, the Set2 histone methyltransferase inhibited kinetochore function in spc25-1 cse4-R143A cells, possibly by methylating Cse4-K131. Taken together, our data suggest that Cse4-R143 methylation and Cse4-K131 methylation affect the stability of the centromeric nucleosome, which is detrimental in the context of defective NDC80 tetramerization and can be compensated for by strengthening interactions among NDC80 complex components.
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影响因子:
16
作者:
Hewawasam G;Shivaraju M;Mattingly M;Venkatesh S;Martin-Brown S;Florens L;Workman JL;Gerton JL
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作者:
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