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Fig. 1 Overall structure of AxqNOR and interhelical dimer interactions.
Overall structure of AxqNOR and interhelical dimer interactions. (A) Dimeric AxqNOR in plane of the lipid bilayer (orange lines) colored by chain (A in teal and B in maroon), with heme groups denoted as purple and cyan sticks. (B) AxqNOR viewed from the periplasmic side showing transmembrane helices numbered with roman numerals, with heme and nonheme iron (FeB) ligating histidines shown as sticks. Calcium is shown as green spheres, and FeB is shown as red spheres. (C) Hydrophobic interactions between TMHII of each respective Val495Ala molecule with the density map contoured at 7σ around the residues, with the wild-type exhibiting a consistent arrangement. Chai C. Gopalasingam et al. Sci Adv 2019;5:eaax1803 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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