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Fig. 1 Cryo-EM structure of yeast Elp123 showing its active site.
Cryo-EM structure of yeast Elp123 showing its active site. (A) Atomic model of Elp123 shown from front and top. The FeS cluster (orange and yellow) and the 5′dA molecule (green) are highlighted. Elp1, Elp2, and Elp3 domain organization is shown schematically and labeled in the upper panel. Scale bar, 25 Å. (B) Close-up of the active site of Elp3. Model and respective density of the [4Fe4S] cluster and the 5′dA molecule are shown. The coordinating cysteine residues are labeled, and the additional density next to the fourth iron atom is indicated by a question mark (upper left). Residues involved in FeS cluster and SAM coordination are shown with their respective densities (lower left). Organization of the active site including ligands and involved protein residues (right). Maria I. Dauden et al. Sci Adv 2019;5:eaaw2326 Copyright © 2019 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution License 4.0 (CC BY).
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