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. 2021 Jul 19;12:711158. doi: 10.3389/fmicb.2021.711158

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Copyright © 2021 Sumyk, Himpich, Foong, Herrmann, Pos and Tam.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Crystal structures of AbTetR and the minocycline bound AbTetR-Gln116Ala variant. (A) Crystal structure of TetR of A. baumannii AYE (rainbow color, N terminus: blue, C terminus: red). (B) Superimposition of AbTetR-A (green) and AbTetR-B (blue). (C) Binary structure of two dimeric Gln116Ala variants in complex with minocycline. Minocycline molecules are depicted as spheres (carbon: black; oxygen: red; nitrogen: blue). (D) Superimposition of the four monomers of minocycline-bound Gln116Ala (Gln116Ala-A: green, Gln116Ala-B: cyan, Gln116Ala-C: magenta, Gln116Ala-D: yellow).