{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,11]],"date-time":"2026-10-11T03:32:44Z","timestamp":1791689564086,"version":"4.3.4"},"reference-count":31,"publisher":"Oxford University Press (OUP)","issue":"3","license":[{"start":{"date-parts":[[2020,3,25]],"date-time":"2020-03-25T00:00:00Z","timestamp":1585094400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001691","name":"JSPS","doi-asserted-by":"publisher","award":["JP25550026"],"award-info":[{"award-number":["JP25550026"]}],"id":[{"id":"10.13039\/501100001691","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001691","name":"JSPS","doi-asserted-by":"publisher","award":["JP18H04978"],"award-info":[{"award-number":["JP18H04978"]}],"id":[{"id":"10.13039\/501100001691","id-type":"DOI","asserted-by":"publisher"}]},{"name":"NIFS Collaborative Research Program","award":["NIFS17KOCA002"],"award-info":[{"award-number":["NIFS17KOCA002"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2020,5,22]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>Ataxia-telangiectasia (AT) and MRE11-defective Ataxia-telangiectasia-like disorder (ATLD) patients show progressive cerebellar ataxia. ATM, mutated in AT, can be activated in response to oxidative stress as well as DNA damage, which could be linked to disease-related neurodegeneration. However, the role of MRE11 in oxidative stress responses has been elusive. Here, we showed that MRE11 could participate in ATM activation during oxidative stress in an NBS1\/RAD50-independent manner. Importantly, MRE11 was indispensable for ATM activation. We identified FXR1 as a novel MRE11-binding partner by mass spectrometry. We confirmed that FXR1 could bind with MRE11 and showed that both localize to the cytoplasm. Notably, MRE11 and FXR1 partly localize to the mitochondria, which are the major source of cytoplasmic reactive oxygen species (ROS). The contribution of FXR1 to DNA double-strand break damage responses seemed minor and limited to HR repair, considering that depletion of FXR1 perturbed chromatin association of homologous recombination repair factors and sensitized cells to camptothecin. During oxidative stress, depletion of FXR1 by siRNA reduced oxidative stress responses and increased the sensitivity to pyocyanin, a mitochondrial ROS inducer. Collectively, our findings suggest that MRE11 and FXR1 might contribute to cellular defense against mitochondrial ROS as a cytoplasmic complex.<\/jats:p>","DOI":"10.1093\/jrr\/rraa011","type":"journal-article","created":{"date-parts":[[2020,2,27]],"date-time":"2020-02-27T07:21:41Z","timestamp":1582788101000},"page":"368-375","source":"Crossref","is-referenced-by-count":13,"title":["FXR1 is a novel MRE11-binding partner and participates in oxidative stress responses"],"prefix":"10.1093","volume":"61","author":[{"given":"Fei","family":"Qi","sequence":"first","affiliation":[{"name":"Department of Interdisciplinary Environment, Graduate School of Human and Environmental Sciences, Kyoto University, Yoshidanihonmatsucho, Sakyo-ku, Kyoto 606-8501, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Qingmei","family":"Meng","sequence":"first","affiliation":[{"name":"Department of Interdisciplinary Environment, Graduate School of Human and Environmental Sciences, Kyoto University, Yoshidanihonmatsucho, Sakyo-ku, Kyoto 606-8501, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ikue","family":"Hayashi","sequence":"first","affiliation":[{"name":"Graduate School of Biomedical Sciences, Hiroshima University, Hiroshima, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Junya","family":"Kobayashi","sequence":"first","affiliation":[{"name":"Department of Interdisciplinary Environment, Graduate School of Human and Environmental Sciences, Kyoto University, Yoshidanihonmatsucho, Sakyo-ku, Kyoto 606-8501, Japan"},{"name":"Department of Genome Repair Dynamics, Radiation Biology Center, Graduate School of Biostudies, Kyoto University, Yoshidakonoecho, Sakyo-ku, Kyoto 606-8501, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"286","published-online":{"date-parts":[[2020,3,25]]},"reference":[{"key":"2020061712032980100_ref1","doi-asserted-by":"crossref","first-page":"195","DOI":"10.1266\/ggs.15-00010","article-title":"Chromatin modification and NBS1: Their relationship in DNA double-strand break repair","volume":"90","author":"Saito","year":"2016","journal-title":"Genes Genet Syst"},{"key":"2020061712032980100_ref2","doi-asserted-by":"crossref","first-page":"711","DOI":"10.1146\/annurev-biochem-060614-034335","article-title":"Mechanisms of ATM activation","volume":"84","author":"Paull","year":"2015","journal-title":"Annu Rev Biochem"},{"key":"2020061712032980100_ref3","doi-asserted-by":"crossref","first-page":"191","DOI":"10.1007\/978-981-10-6722-8_13","volume-title":"DNA Repair 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