[4Fe4S]2+ clusters exhibit ground-state paramagnetism.
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ABSTRACT:
SUBMITTER: Rupnik K
PROVIDER: S-EPMC3088508 | biostudies-literature | 2011 May
REPOSITORIES: biostudies-literature
Publications
[4Fe4S]2+ clusters exhibit ground-state paramagnetism.
Rupnik Kresimir K Lee Chi Chung CC Hu Yilin Y Ribbe Markus W MW Hales Brian J BJ
Journal of the American Chemical Society 20110413 18
Two proteins involved in nitrogen fixation contain ferredoxin-type [4Fe4S] clusters that exist in paramagnetic ground state upon oxidation, a property never observed since the discovery of ferredoxins 50 years ago. This unique characteristic suggests a specific coupling in these clusters necessary for nitrogen fixation and implies an evolutionary connection between the clusters in the two proteins. ...[more]
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