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. 2016 May 25;44(13):6471–6481. doi: 10.1093/nar/gkw470

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© The Author(s) 2016. Published by Oxford University Press on behalf of Nucleic Acids Research.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by-nc/4.0/), which permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is properly cited. For commercial re-use, please contact journals.permissions@oup.com

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Figure 3. — RelA adopts an extended conformation on the ribosome. (A) Schematic showing the domain organization of E. coli RelA with HD (magenta), SYNTH (pink), TGS (green), HELICAL (blue), CC (yellow) and ACT (orange) subdomains. (B) Overview of RelA-SRC with subdomains colored according to (A) and A/R-tRNA (light blue). (C and D) Complementary views showing isolated electron density of RelA with fitted homology models for TGS (green, PDB2EKI) and ACT (orange, PDB2KO1) subdomains, as well as model poly-Alanine helices fitted to the helical linker region (blue) and density for CC colored in yellow. (E–G) As (B–D) with 12 Å filtered maps and additional fitted homology models for HD (magenta) and SYNTH (pink) based on PDB1VJ7 (24).