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. 2019 Sep 20;431(20):3960–3974. doi: 10.1016/j.jmb.2019.04.022

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© 2019 The Authors

This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).

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Fig. 4 — The unique features of σ⁵⁴. (a) Density showing the interaction between RI of σ⁵⁴ and the GAFTGA (cyan) sequence on L1 in RPi (PDB ID: 5NSS) using ChimeraX v0.1. (b) The ELH swings into the cleft, resulting in a kink in the DNA of 30° in RPip (PDB ID: 6GH6). (c) The ELH stabilizes the open bubble in RPo (PDB ID: 6GH5).