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. 2020 Sep 2;6(36):eabc0023. doi: 10.1126/sciadv.abc0023

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Copyright © 2020 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 NonCommercial License 4.0 (CC BY-NC).

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Fig. 2 — In the MS2 coat protein dimer, the C-terminal α helices αA and αB of one monomer (rainbow-colored) are positioned roughly end to end to each other in a groove formed by the same helices in the other monomer (light gray). The MS2-like EMS014 and ESE021 coat proteins are closely related, but while the fold of the EMS014 CP closely follows that of MS2, in the ESE021 CP, the αB helices are swapped between the two monomers.