176483-80-0Relevant articles and documents
DNA hydrolysis catalyzed by tris(diisopropyl-1,4,7-triazacyclononanes) ethane metal complexes
Cheng, Chien-Chung,Huang, Yan-Chen,Liu, Ming-Chan
, p. 1201 - 1208 (2007/10/03)
Novel trinuclear coordinated ligands were designed using three of 1,4,7-triazacyclononane moieties with a tribromo linker. These ligands show greater capability and potency in association with various metal ions. Tris(diisopropyl-1,4,7-triazacyclononanes)ethane (2) associated with Cu 2+ and Ce4+ ions shows better reactivity to achieve DNA hydrolysis at 37 °C at pH 8 for 5 hr. Using high resolution of polyacrylamide gel electrophoresis, DNA cleavage reaction in Tris-HCl buffer causes a nicking site at the single-stranded region. Alternatively, the reaction in HEPES buffer shows a random DNA cleavage included the double-stranded region. Hydrolysis of phosphodiester bond mediated by trinuclear metal complex is capable of performing at the physiological temperature 37 °C, but it has a lower reactivity compared to mono- and di-nuclear metal complexes. The result suggests that trinuclear metal complexes have a bulky environment to prevent from going toward the phosphodiester bond. The design of an efficient chemical hydrolyase will be a challenge in order to construct a coordinate ligand with the enhancement of hydrolytic activity and the reduction of the steric environment.
Structural characterization of the first example of a bis(μ-thiolato)dicopper(II) complex. Relevance to proposals for the electron transfer sites in cytochrome c oxidase and nitrous oxide reductase
Houser, Robert P.,Halfen, Jason A.,Young Jr., Victor G.,Blackburn, Ninian J.,Tolman, William B.
, p. 10745 - 10746 (2007/10/02)
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