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Ca\n                    <jats:sup>2+<\/jats:sup>\n                    binding induces conformational changes that modulate the activities of EF-hand proteins. Moreover, these proteins occasionally modify their activities by coordinating metals other than Ca\n                    <jats:sup>2+<\/jats:sup>\n                    , including Mg\n                    <jats:sup>2+<\/jats:sup>\n                    , Pb\n                    <jats:sup>2+<\/jats:sup>\n                    and Zn\n                    <jats:sup>2+<\/jats:sup>\n                    , within their EF-hands. EFhd1 and EFhd2 are homologous EF-hand proteins with similar structures. Although separately localized within cells, both are actin-binding proteins that modulate F-actin rearrangement through Ca\n                    <jats:sup>2+<\/jats:sup>\n                    -independent actin-binding and Ca\n                    <jats:sup>2+<\/jats:sup>\n                    -dependent actin-bundling activity. Although Ca\n                    <jats:sup>2+<\/jats:sup>\n                    is known to affect the activities of EFhd1 and EFhd2, it is not known whether their actin-related activities are affected by other metals. Here, the crystal structures of the EFhd1 and EFhd2 core domains coordinating Zn\n                    <jats:sup>2+<\/jats:sup>\n                    ions within their EF-hands are reported. The presence of Zn\n                    <jats:sup>2+<\/jats:sup>\n                    within EFhd1 and EFhd2 was confirmed by analyzing anomalous signals and the difference between anomalous signals using data collected at the peak positions as well as low-energy remote positions at the Zn\n                    <jats:italic>K<\/jats:italic>\n                    -edge. EFhd1 and EFhd2 were also found to exhibit Zn\n                    <jats:sup>2+<\/jats:sup>\n                    -independent actin-binding and Zn\n                    <jats:sup>2+<\/jats:sup>\n                    -dependent actin-bundling activity. This suggests the actin-related activities of EFhd1 and EFhd2 could be regulated by Zn\n                    <jats:sup>2+<\/jats:sup>\n                    as well as Ca\n                    <jats:sup>2+<\/jats:sup>\n                    .\n                  <\/jats:p>","DOI":"10.1107\/s2052252523001501","type":"journal-article","created":{"date-parts":[[2023,2,23]],"date-time":"2023-02-23T05:04:15Z","timestamp":1677128655000},"page":"233-245","update-policy":"https:\/\/doi.org\/10.1107\/cm_01","source":"Crossref","is-referenced-by-count":6,"title":["Structural and biochemical insights into Zn\n                    <sup>2+<\/sup>\n                    -bound EF-hand proteins, EFhd1 and EFhd2"],"prefix":"10.1107","volume":"10","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-2614-2221","authenticated-orcid":true,"given":"Sang A","family":"Mun","sequence":"first","affiliation":[{"id":[{"id":"https:\/\/ror.org\/024kbgz78","id-type":"ROR","asserted-by":"publisher"}],"department":["School of Life Sciences"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2564-5422","authenticated-orcid":true,"given":"Jongseo","family":"Park","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/024kbgz78","id-type":"ROR","asserted-by":"publisher"}],"department":["School of Life Sciences"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jung Youn","family":"Kang","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/024kbgz78","id-type":"ROR","asserted-by":"publisher"}],"department":["School of Life Sciences"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7779-9282","authenticated-orcid":true,"given":"Taein","family":"Park","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/024kbgz78","id-type":"ROR","asserted-by":"publisher"}],"department":["Steitz Center for Structural Biology"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0076-4345","authenticated-orcid":true,"given":"Minwoo","family":"Jin","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/024kbgz78","id-type":"ROR","asserted-by":"publisher"}],"department":["School of Life Sciences"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jihyeong","family":"Yang","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/024kbgz78","id-type":"ROR","asserted-by":"publisher"}],"department":["School of Life Sciences"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1272-5805","authenticated-orcid":true,"given":"Soo Hyun","family":"Eom","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/024kbgz78","id-type":"ROR","asserted-by":"publisher"}],"department":["School of Life Sciences"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"329","published-online":{"date-parts":[[2023,3,1]]},"reference":[{"key":"jt5066_bb1","doi-asserted-by":"crossref","first-page":"352","DOI":"10.1107\/S0907444912001308","volume":"68","author":"Afonine","year":"2012","journal-title":"Acta Cryst. 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