Cargando…
CRL4(Cdt2) ubiquitin ligase regulates Dna2 and Rad16 (XPF) nucleases by targeting Pxd1 for degradation
Structure-specific endonucleases (SSEs) play key roles in DNA replication, recombination, and repair. SSEs must be tightly regulated to ensure genome stability but their regulatory mechanisms remain incompletely understood. Here, we show that in the fission yeast Schizosaccharomyces pombe, the activ...
Autores principales: | , , , , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Public Library of Science
2020
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7394458/ https://www.ncbi.nlm.nih.gov/pubmed/32692737 http://dx.doi.org/10.1371/journal.pgen.1008933 |
_version_ | 1783565235029803008 |
---|---|
author | Zhang, Jia-Min Zheng, Jin-Xin Ding, Yue-He Zhang, Xiao-Ran Suo, Fang Ren, Jing-Yi Dong, Meng-Qiu Du, Li-Lin |
author_facet | Zhang, Jia-Min Zheng, Jin-Xin Ding, Yue-He Zhang, Xiao-Ran Suo, Fang Ren, Jing-Yi Dong, Meng-Qiu Du, Li-Lin |
author_sort | Zhang, Jia-Min |
collection | PubMed |
description | Structure-specific endonucleases (SSEs) play key roles in DNA replication, recombination, and repair. SSEs must be tightly regulated to ensure genome stability but their regulatory mechanisms remain incompletely understood. Here, we show that in the fission yeast Schizosaccharomyces pombe, the activities of two SSEs, Dna2 and Rad16 (ortholog of human XPF), are temporally controlled during the cell cycle by the CRL4(Cdt2) ubiquitin ligase. CRL4(Cdt2) targets Pxd1, an inhibitor of Dna2 and an activator of Rad16, for degradation in S phase. The ubiquitination and degradation of Pxd1 is dependent on CRL4(Cdt2), PCNA, and a PCNA-binding degron motif on Pxd1. CRL4(Cdt2)-mediated Pxd1 degradation prevents Pxd1 from interfering with the normal S-phase functions of Dna2. Moreover, Pxd1 degradation leads to a reduction of Rad16 nuclease activity in S phase, and restrains Rad16-mediated single-strand annealing, a hazardous pathway of repairing double-strand breaks. These results demonstrate a new role of the CRL4(Cdt2) ubiquitin ligase in genome stability maintenance and shed new light on how SSE activities are regulated during the cell cycle. |
format | Online Article Text |
id | pubmed-7394458 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | Public Library of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-73944582020-08-13 CRL4(Cdt2) ubiquitin ligase regulates Dna2 and Rad16 (XPF) nucleases by targeting Pxd1 for degradation Zhang, Jia-Min Zheng, Jin-Xin Ding, Yue-He Zhang, Xiao-Ran Suo, Fang Ren, Jing-Yi Dong, Meng-Qiu Du, Li-Lin PLoS Genet Research Article Structure-specific endonucleases (SSEs) play key roles in DNA replication, recombination, and repair. SSEs must be tightly regulated to ensure genome stability but their regulatory mechanisms remain incompletely understood. Here, we show that in the fission yeast Schizosaccharomyces pombe, the activities of two SSEs, Dna2 and Rad16 (ortholog of human XPF), are temporally controlled during the cell cycle by the CRL4(Cdt2) ubiquitin ligase. CRL4(Cdt2) targets Pxd1, an inhibitor of Dna2 and an activator of Rad16, for degradation in S phase. The ubiquitination and degradation of Pxd1 is dependent on CRL4(Cdt2), PCNA, and a PCNA-binding degron motif on Pxd1. CRL4(Cdt2)-mediated Pxd1 degradation prevents Pxd1 from interfering with the normal S-phase functions of Dna2. Moreover, Pxd1 degradation leads to a reduction of Rad16 nuclease activity in S phase, and restrains Rad16-mediated single-strand annealing, a hazardous pathway of repairing double-strand breaks. These results demonstrate a new role of the CRL4(Cdt2) ubiquitin ligase in genome stability maintenance and shed new light on how SSE activities are regulated during the cell cycle. Public Library of Science 2020-07-21 /pmc/articles/PMC7394458/ /pubmed/32692737 http://dx.doi.org/10.1371/journal.pgen.1008933 Text en © 2020 Zhang et al http://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. |
spellingShingle | Research Article Zhang, Jia-Min Zheng, Jin-Xin Ding, Yue-He Zhang, Xiao-Ran Suo, Fang Ren, Jing-Yi Dong, Meng-Qiu Du, Li-Lin CRL4(Cdt2) ubiquitin ligase regulates Dna2 and Rad16 (XPF) nucleases by targeting Pxd1 for degradation |
title | CRL4(Cdt2) ubiquitin ligase regulates Dna2 and Rad16 (XPF) nucleases by targeting Pxd1 for degradation |
title_full | CRL4(Cdt2) ubiquitin ligase regulates Dna2 and Rad16 (XPF) nucleases by targeting Pxd1 for degradation |
title_fullStr | CRL4(Cdt2) ubiquitin ligase regulates Dna2 and Rad16 (XPF) nucleases by targeting Pxd1 for degradation |
title_full_unstemmed | CRL4(Cdt2) ubiquitin ligase regulates Dna2 and Rad16 (XPF) nucleases by targeting Pxd1 for degradation |
title_short | CRL4(Cdt2) ubiquitin ligase regulates Dna2 and Rad16 (XPF) nucleases by targeting Pxd1 for degradation |
title_sort | crl4(cdt2) ubiquitin ligase regulates dna2 and rad16 (xpf) nucleases by targeting pxd1 for degradation |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7394458/ https://www.ncbi.nlm.nih.gov/pubmed/32692737 http://dx.doi.org/10.1371/journal.pgen.1008933 |
work_keys_str_mv | AT zhangjiamin crl4cdt2ubiquitinligaseregulatesdna2andrad16xpfnucleasesbytargetingpxd1fordegradation AT zhengjinxin crl4cdt2ubiquitinligaseregulatesdna2andrad16xpfnucleasesbytargetingpxd1fordegradation AT dingyuehe crl4cdt2ubiquitinligaseregulatesdna2andrad16xpfnucleasesbytargetingpxd1fordegradation AT zhangxiaoran crl4cdt2ubiquitinligaseregulatesdna2andrad16xpfnucleasesbytargetingpxd1fordegradation AT suofang crl4cdt2ubiquitinligaseregulatesdna2andrad16xpfnucleasesbytargetingpxd1fordegradation AT renjingyi crl4cdt2ubiquitinligaseregulatesdna2andrad16xpfnucleasesbytargetingpxd1fordegradation AT dongmengqiu crl4cdt2ubiquitinligaseregulatesdna2andrad16xpfnucleasesbytargetingpxd1fordegradation AT dulilin crl4cdt2ubiquitinligaseregulatesdna2andrad16xpfnucleasesbytargetingpxd1fordegradation |