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The structure of complex 2 shows distorted pentagonal\u2010bipyramidal geometry, as confirmed by a single\u2010crystal XRD diffraction study. The interactions of complexes with bovine serum albumin (BSA) and calf thymus DNA (CT\u2010DNA) are investigated using UV\u2010visible and fluorescence spectroscopic techniques. It has been observed that CT\u2010DNA interacts with complexes through groove binding mode and the binding constants for complexes <jats:bold>1<\/jats:bold> and <jats:bold>2<\/jats:bold> are 8.7\u2009\u00d7\u200910<jats:sup>3<\/jats:sup>\u2009M<jats:sup>\u22121<\/jats:sup> and 8.6\u2009\u00d7\u200910<jats:sup>3<\/jats:sup>\u2009M<jats:sup>\u22121<\/jats:sup>, respectively, and BSA quenching constants for complexes <jats:bold>1<\/jats:bold> and <jats:bold>2<\/jats:bold> are 0.0628\u2009\u00d7\u200910<jats:sup>6<\/jats:sup>\u2009M<jats:sup>\u22121<\/jats:sup> and 0.0163\u2009\u00d7\u200910<jats:sup>6<\/jats:sup>\u2009M<jats:sup>\u22121<\/jats:sup>, respectively. The ability of complexes to cleave DNA is investigated using the gel electrophoresis method with pBR322 plasmid DNA. Furthermore, the cytotoxic effect of the complexes is evaluated against the HeLa cell line using an MTT assay. The complexes are subjected to density functional theory calculations to gain insight into their molecular geometries and are in accordance with the results of docking studies. Furthermore, based on molecular docking studies, the intermolecular interactions responsible for the stronger binding affinities between metal complexes and DNA are discussed.<\/jats:p>","DOI":"10.1155\/2022\/8696420","type":"journal-article","created":{"date-parts":[[2022,8,17]],"date-time":"2022-08-17T16:05:05Z","timestamp":1660752305000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":7,"title":["Oxoperoxovanadium Complexes of Hetero Ligands: X\u2010Ray Crystal Structure, Density Functional Theory, and Investigations on DNA\/BSA Interactions, Cytotoxic, and Molecular Docking Studies"],"prefix":"10.1155","volume":"2022","author":[{"given":"Saraswathi","family":"Kothandan","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Krishnan","family":"Thirumoorthy","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Antonio","family":"Rodr\u00edguez-Di\u00e9guez","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7936-1850","authenticated-orcid":false,"given":"Angappan","family":"Sheela","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2022,8,17]]},"reference":[{"key":"e_1_2_8_1_2","doi-asserted-by":"publisher","DOI":"10.1002\/ijc.33588"},{"key":"e_1_2_8_2_2","doi-asserted-by":"publisher","DOI":"10.3322\/caac.21332"},{"key":"e_1_2_8_3_2","doi-asserted-by":"publisher","DOI":"10.2174\/1871520618666180420165821"},{"key":"e_1_2_8_4_2","first-page":"555","article-title":"An overview of the optical and electrochemical methods for detection of DNA-drug interactions","volume":"61","author":"Aleksi\u0107 M. 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