Effect of Oxidation and Protonation States on [2Fe–2S] Cluster Nitrosylation Giving {Fe(NO)<sub>2</sub>}<sup>9</sup> Dinitrosyl Iron Complexes (DNICs)
作者:Christine E. Schiewer、Christina S. Müller、Sebastian Dechert、Marie Bergner、Juliusz A. Wolny、Volker Schünemann、Franc Meyer
DOI:10.1021/acs.inorgchem.8b02927
日期:2019.1.7
iron complexes (DNICs) is physiologically important. Biomimetic studies on the reaction of synthetic [2Fe–2S] clusters with NO have so far been limited to diferric modelcomplexes. This work now compares the nitrosylation of [2Fe–2S] clusters with SN- or NN-chelating benzimidazolate/thiophenolate or bis(benzimidazolate) capping ligands in their diferric (12– and 22–) and mixed-valent (FeIIFeIII, 13–
Model of the MitoNEET [2Fe−2S] Cluster Shows Proton Coupled Electron Transfer
作者:Marie Bergner、Sebastian Dechert、Serhiy Demeshko、Claudia Kupper、James M. Mayer、Franc Meyer
DOI:10.1021/jacs.6b09180
日期:2017.1.18
transfer (PCET) at the SN} ligated site, pointing at a potential functional role of the enzyme's unique His ligand. Full PCET thermodynamic square schemes for the mitoNEET model 52- and a related homoleptic SN/SN} capped [2Fe-2S] cluster 42- are established, and kinetics of PCET reactivity are investigated by double-mixing stopped-flow experiments for both complexes. While the N-H bond dissociation free
Diphenyl disulfide compounds having an inhibiting activity against the production of Interleukin-1β (IL-1β) or the release of Tumor Necrosis Factorα (TNFα), which are useful in the treatment or prophylaxis of the diseases such as chronic rheumatism and sepsis.