{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,20]],"date-time":"2026-06-20T00:29:46Z","timestamp":1781915386712,"version":"3.54.5"},"reference-count":64,"publisher":"American Society for Microbiology","issue":"16","license":[{"start":{"date-parts":[[2017,8,15]],"date-time":"2017-08-15T00:00:00Z","timestamp":1502755200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.asm.org\/non-commercial-tdm-license"}],"funder":[{"DOI":"10.13039\/100000060","name":"HHS | NIH | National Institute of Allergy and Infectious Diseases","doi-asserted-by":"publisher","award":["1R01AI103173"],"award-info":[{"award-number":["1R01AI103173"]}],"id":[{"id":"10.13039\/100000060","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100000060","name":"HHS | NIH | National Institute of Allergy and Infectious Diseases","doi-asserted-by":"publisher","award":["1R21AI107171"],"award-info":[{"award-number":["1R21AI107171"]}],"id":[{"id":"10.13039\/100000060","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100000057","name":"HHS | NIH | National Institute of General Medical Sciences","doi-asserted-by":"publisher","award":["1R01GM111795"],"award-info":[{"award-number":["1R01GM111795"]}],"id":[{"id":"10.13039\/100000057","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100000011","name":"Howard Hughes Medical Institute","doi-asserted-by":"publisher","award":["Faculty Scholar"],"award-info":[{"award-number":["Faculty Scholar"]}],"id":[{"id":"10.13039\/100000011","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100000861","name":"Burroughs Wellcome Fund","doi-asserted-by":"publisher","award":["Investigators in the Pathogenesis of Infectious Disease"],"award-info":[{"award-number":["Investigators in the Pathogenesis of Infectious Disease"]}],"id":[{"id":"10.13039\/100000861","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["journals.asm.org"],"crossmark-restriction":true},"short-container-title":["J Bacteriol"],"published-print":{"date-parts":[[2017,8,15]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n          <jats:p>\n            The ferric uptake regulator (Fur) family of DNA-binding proteins represses and\/or activates gene transcription via divalent metal ion-dependent signal sensing. The\n            <jats:named-content content-type=\"genus-species\">Borrelia burgdorferi<\/jats:named-content>\n            Fur homologue, also known as\n            <jats:named-content content-type=\"genus-species\">Borrelia<\/jats:named-content>\n            oxidative stress regulator (BosR), promotes spirochetal adaptation to the mammalian host by directly repressing the lipoproteins required for tick colonization and indirectly activating those required for establishing infection in the mammal. Here, we examined whether the DNA-binding activity of BosR was regulated by any of the four most prevalent transition metal ions in\n            <jats:named-content content-type=\"genus-species\">B. burgdorferi<\/jats:named-content>\n            , Mn, Fe, Cu, and Zn. Our data indicated that in addition to a structural site occupied by Zn(II), BosR had two regulatory sites that could be occupied by Zn(II), Fe(II), or Cu(II) but not by Mn(II). While Fe(II) had no effect, Cu(II) and Zn(II) had a dose-dependent inhibitory effect on the BosR DNA-binding activity. Competition experiments indicated that Cu(II) had a higher affinity for BosR than Zn(II) or Fe(II). A BosR deficiency in\n            <jats:named-content content-type=\"genus-species\">B. burgdorferi<\/jats:named-content>\n            resulted in a significant increase in the Cu level but no significant change in the levels of Mn, Fe, or Zn. These data suggest that Cu regulates BosR activity, and BosR in turn regulates Cu homeostasis in\n            <jats:named-content content-type=\"genus-species\">B. burgdorferi<\/jats:named-content>\n            . While this regulatory paradigm is characteristic of the Fur family, BosR is the first one shown to be responsive to Cu(II), which may be an adaptation to the potentially high level of Cu present in the Lyme disease spirochete.\n          <\/jats:p>\n          <jats:p>\n            <jats:bold>IMPORTANCE<\/jats:bold>\n            Transition metal ions serve an essential role in the metabolism of all living organisms. Members of the ferric uptake regulator (Fur) family play critical roles in regulating the cellular homeostasis of transition metals in diverse bacteria, and their DNA-binding activity is often regulated by coordination of the cognate divalent metal ions. To date, regulators with metal ion specificity to Fe(II), Mn(II), Zn(II), and Ni(II) have all been described. In this study, we demonstrate that BosR, the sole Fur homologue in\n            <jats:named-content content-type=\"genus-species\">Borrelia burgdorferi<\/jats:named-content>\n            , is responsive to Cu(II) and regulates Cu homeostasis in this bacterium, which may be an adaption to potentially Cu-rich milieu in the Lyme disease spirochete. This study has expanded the repertoire of the Fur family's metal ion specificity.\n          <\/jats:p>","DOI":"10.1128\/jb.00276-17","type":"journal-article","created":{"date-parts":[[2017,6,6]],"date-time":"2017-06-06T00:30:13Z","timestamp":1496709013000},"update-policy":"https:\/\/doi.org\/10.1128\/asmj-crossmark-policy-page","source":"Crossref","is-referenced-by-count":18,"title":["BosR Is A Novel Fur Family Member Responsive to Copper and Regulating Copper Homeostasis in Borrelia burgdorferi"],"prefix":"10.1128","volume":"199","author":[{"given":"Peng","family":"Wang","sequence":"first","affiliation":[{"name":"Division of Geographic Medicine and Infectious Diseases, Tufts Medical Center, Boston, Massachusetts, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zhuoteng","family":"Yu","sequence":"additional","affiliation":[{"name":"Division of Geographic Medicine and Infectious Diseases, Tufts Medical Center, Boston, Massachusetts, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Thomas J.","family":"Santangelo","sequence":"additional","affiliation":[{"name":"Department of Biochemistry and Molecular Biology, Colorado State University, Fort Collins, Colorado, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"John","family":"Olesik","sequence":"additional","affiliation":[{"name":"Trace Element Research Laboratory, The Ohio State University, Columbus, Ohio, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yufeng","family":"Wang","sequence":"additional","affiliation":[{"name":"Department of Biology, University of Texas at San Antonio, San Antonio, Texas, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3113-6958","authenticated-orcid":false,"given":"Ekaterina","family":"Heldwein","sequence":"additional","affiliation":[{"name":"Department of Molecular Biology and Microbiology, Tufts University School of 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