ArticlebioRxiv : the preprint server for biology2023
Spin-Coupled Electron Densities of Iron-Sulfur Cluster Imaged by
Article in bioRxiv : the preprint server for biology, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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11 authors at 2 institutions in 2 countries.
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Abstract
Iron-sulfur clusters are inorganic cofactors found in many proteins involved in fundamental biological processes including DNA processing. The prokaryotic DNA repair enzyme PhrB, a member of the protein family of cryptochromes and photolyases, carries a four-iron-four-sulfur cluster [4Fe4S] in addition to the catalytic cofactor flavin adenine dinucleotide (FAD) and a second pigment 6,7-dimethyl-8-ribityllumazine (DMRL). The light-induced redox reactions of this multi-cofactor protein complex were recently shown as two interdependent photoreductions of FAD and DMRL mediated by the [4Fe4S] cluster functioning as an electron cache to hold a fine balance of electrons. Here, we apply the more traditional temperature-scan cryo-trapping technique in protein crystallography and the newly developed technology of
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