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Loss of NSE-4 Perturbs Genome Stability and DNA Repair in Caenorhabditis elegans

文献类型: 外文期刊

作者: Odiba, Arome Solomon 1 ; Ezechukwu, Chiemekam Samuel 1 ; Liao, Guiyan 1 ; Li, Siqiao 1 ; Chen, Zhongliang 5 ; Liu, Xihui 5 ; Fang, Wenxia 1 ; Jin, Cheng 1 ; Wang, Bin 1 ;

作者机构: 1.Guangxi Acad Sci, State Key Lab Nonfood Biomass & Enzyme Technol, Nanning 530007, Peoples R China

2.Chinese Acad Sci, Inst Microbiol, State Key Lab Mycol, Beijing 100101, Peoples R China

3.Univ Nigeria, Dept Genet & Biotechnol, Nsukka 410001, Nigeria

4.Univ Nigeria, Dept Zool & Environm Biol, Nsukka 410001, Nigeria

5.Guangxi Acad Agr Sci, Sugarcane Res Inst, Guangxi Key Lab Sugarcane Genet Improvement, Nanning 530007, Peoples R China

关键词: C; elegans; DNA repair; meiosis; mitosis; NSE-4; SMC-5; 6 complex

期刊名称:INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES ( 影响因子:6.208; 五年影响因子:6.628 )

ISSN:

年卷期: 2022 年 23 卷 13 期

页码:

收录情况: SCI

摘要: The Structural Maintenance of Chromosomes (SMC) complex plays an important role in maintaining chromosome integrity, in which the SMC5/6 complex occupies a central position by facilitating mitotic and meiotic processes as well as DNA repair. NSE-4 Kleisin is critical for both the organization and function of the SMC5/6 complex, bridging NSE1 and NSE3 (MAGE related) with the head domains of the SMC5 and SMC6 proteins. Despite the conservation in protein sequence, no functional relevance of the NSE-4 homologous protein (NSE-4) in Caenorhabditis elegans has been reported. Here, we demonstrated the essential role of C. elegans NSE-4 in genome maintenance and DNA repair. Our results showed that NSE-4 is essential for the maintenance of chromosomal structure and repair of a range of chemically induced DNA damage. Furthermore, NSE-4 is involved in inter-sister repair during meiosis. NSE-4 localizes on the chromosome and is indispensable for the localization of NSE-1. Collectively, our data from this study provide further insight into the evolutionary conservation and diversification of NSE-4 function in the SMC-5/6 complex.

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