A Functional Model for the Rieske Center: Full Characterization of a Biomimetic N‐Ligated [2Fe‐2S] Cluster in Different Protonation States. Issue 31 (18th June 2013)

• Record Type: Journal Article
• Authors: Albers, Antonia; Bayer, Thomas; Demeshko, Serhiy; Dechert, Sebastian; Meyer, Franc
• Is Part Of: Chemistry. Volume 19:Issue 31(2013)
• Page Start: 10101
• Page End: 10106
• Publication Date: 2013-06-18
• Subjects: Chemistry -- Periodicals; 540
• DOI: 10.1002/chem.201301760
• Languages: English
• ISSNs: 0947-6539

Abstract

<abstract abstract-type="graphical" xml:lang="en"> <title> <x xml:space="preserve">Abstract</x> </title> <p> <bold>Give and take both</bold>: A bis(benzimidazolate)‐capped biomimetic [2Fe‐2S] cluster has been characterized in different protonation states, both in the diferric and mixed‐valent forms. Protonation does not lead to structural changes of the [2Fe‐2S] core, but facilitates its reduction and causes pronounced valence localization in the mixed‐valent state. Concerted proton and electron transfer back to the diferric cluster emulates a key step in the function of mitochondrial Rieske proteins (see scheme).<boxed-text content-type="graphic" position="anchor" orientation="portrait"><graphic position="anchor" mimetype="image" xlink:href="ark:/27927/pgg2771p4d1" orientation="portrait" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink" /></boxed-text></p> </abstract>