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. 2020 Dec;26(12):2017–2030. doi: 10.1261/rna.075846.120

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© 2020 Jahagirdar et al.; Published by Cold Spring Harbor Laboratory Press for the RNA Society

This article is distributed exclusively by the RNA Society for the first 12 months after the full-issue publication date (see http://rnajournal.cshlp.org/site/misc/terms.xhtml). After 12 months, it is available under a Creative Commons License (Attribution-NonCommercial 4.0 International), as described at http://creativecommons.org/licenses/by-nc/4.0/.

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FIGURE 4. — Cryo-EM structure of the 30S-activated-high-Mg²⁺ particle. (A) Front view (left panel) of the cryo-EM map obtained for the 30S-activated-high-Mg²⁺ particle. The framed area is shown as a zoomed-in view in the right panel. The main landmarks of the 30S subunit are labeled. The rRNA is shown in light gray, and the r-proteins are shown in green. Helix 44 is shown in goldenrod orange. (B) Molecular model of the 30S-activated-high-Mg²⁺ particle. The rRNA and the r-proteins are colored as in panel A. (C) Temperature map of the 30S-activated-high-Mg²⁺ molecular model. The rRNA is colored according to the r.m.s.d. deviation (Å) with respect to the structure of the 30S subunit obtained by X-ray crystallography (PDB ID 4V4Q).