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. 2020 Oct 30;48(20):11721–11736. doi: 10.1093/nar/gkaa866

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© The Author(s) 2020. 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 2. — Crystal structure of PaP3 TerS. (A) Top and side views of the quaternary structure of PaP3 TerS. The overall diameter of the molecule is 105 Å, with a height of 50 Å. One of the nine HTH motifs is circled in red. (B) Top view of TerS nonamer with helices shown as cylinders. The oligomerization core is color-coded as in panel A and the rest of TerS in gray. The nine subunits are labeled ‘a’ through ‘i’. A black dot indicates the position of N45, and continuous yellow lines represent the distance between protomers. Only six TerS chains (colored in red) make a salt bridge between R56 and D21.