Cell death dependent on holins LrgAB repressed by a novel ArsR family regulator CdsR

文献类型： 外文期刊

第一作者： Zhang, Xin

作者： Zhang, Xin;Chen, Yuhan;Yan, Tinglu;Wang, Hengjie;Zhang, Ruibin;Xu, Yanrong;Hou, Yujia;Peng, Qi;Song, Fuping;Chen, Yuhan

作者机构：

期刊名称：CELL DEATH DISCOVERY （ 影响因子：7.0； 五年影响因子：6.6 ）

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年卷期： 2024 年 10 卷 1 期

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收录情况： SCI

摘要： The cell death and survival paradox in various biological processes requires clarification. While spore development causes maternal cell death in Bacillus species, the involvement of other cell death pathways in sporulation remains unknown. Here, we identified a novel ArsR family transcriptional regulator, CdsR, and found that the deletion of its encoding gene cdsR causes cell lysis and inhibits sporulation. To our knowledge, this is the first report of an ArsR family transcriptional regulator governing cell death. We found that CdsR directly repressed lrgAB expression. Furthermore, lrgAB overexpression resulted in cell lysis without sporulation, akin to the cdsR mutant, suggesting that LrgAB, a holin-like protein, induces cell death in Bacillus spp. The lrgAB mutation increases abnormal cell numbers during spore development. In conclusion, we propose that a novel repressor is vital for inhibiting LrgAB-dependent cell lysis.

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