Insights from ¹²⁵Te and ⁵⁷Fe nuclear resonance vibrational spectroscopy: a [4Fe-4Te] cluster from two points of view.

ABSTRACT: Iron-sulfur clusters are common building blocks for electron transport and active sites of metalloproteins. Their comprehensive investigation is crucial for understanding these enzymes, which play important roles in modern biomimetic catalysis and biotechnology applications. We address this issue by utilizing (Et₄N)₃[Fe₄Te₄(SPh)₄], a tellurium modified version of a conventional reduced [4Fe-4S]⁺ cluster, and performed both ⁵⁷Fe- and ¹²⁵Te-NRVS to reveal its characteristic vibrational features. Our analysis exposed major differences in the resulting ⁵⁷Fe spectrum profile as compared to that of the respective [4Fe-4S] cluster, and between the ⁵⁷Fe and ¹²⁵Te profiles. DFT c

SUBMITTER: Wittkamp F 

PROVIDER: S-EPMC6761874 | biostudies-literature | 2019 Aug

REPOSITORIES: biostudies-literature