Abstract
ABSTRACTDNA binding study of a vanadium(V) complex, Oxo-chloro-bis-N-phenylbenzohydroxamto-vanadium(V), derived from N-phenylbenzohydroxamic acid(PBHA) form a violet color complex with vanadium (V) in presence of hydrochloric acid is performed using absorption, fluorescence and viscometric techniques. The binding parameters of the PBHA-V(V) complex using calf thymus DNA (ct-DNA) and torula yeast RNA (t-RNA) have been determined. The complex shows the ability of cooperatively minor groove binding with ct-DNA as indicated by remarkable hyperchromicity and a blue shift of the absorption spectra. Quenching of metal complex calculation was carried out with Stern-Volmer equation and Ksv was found to be 2.32 ± 0.18 × 104 M−1, while in the case of t-RNA, enhancement is observed and that means the compound was not able to displace the Ethidium Bromide(EB)-t-RNA complex. Molecular docking was also applied to predict the mode of interaction of the hydroxamic acid with ct-DNA and t-RNA. DNA binding results of the complex are compared with those of the parent ligand.
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