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. 2019 Mar 27;47(9):4393–4405. doi: 10.1093/nar/gkz198

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© The Author(s) 2019. 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/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.

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Figure 5. — Comparison of Escherichia coli RecA-NT and UmuC-CT complexes with RecA. (A) Schematic representation of RecA filament on ssDNA. Arrow indicates the only free interaction site on the RecA surface at the 3′-end of RecA filament. (B) Schematic and structural comparison of the two complexes. (C) Interface energetic scores depicted as colored surfaces for RecA bound to RecA-NT (left), not bound to any motif (middle) and bound to UmuC-CT (right). Blue and red colors correspond to estimated favorable-unfavorable surface energy. (D) Zoomed-in interaction interface between E. coli UmuC-CT and RecA. The corresponding part of the structure is indicated with a dashed line in part (B). UmuC-CT residues S370, R367 and Q372 that have been shown to crosslink to the RecA position 113 are highlighted. The RecA S117 residue located at the interface is also highlighted.