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. 2022 Jan 5;11:790101. doi: 10.3389/fcimb.2021.790101

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Copyright © 2022 Yu, Liu, Luo, Zhao, Alzan and He

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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Subunit interfaces of BoLDH. (A) The tetrameric state of BoLDH. BoLDH consists of four identical subunits, and colored in green, scan, magenta and yellow, respectively. (B) Comparison between apo Bifidobacterium longum (Bl) LDH (1lld) and BoLDH. The apo BoLDH (scan) were superimposed on and BlLDH without ligands (green). (C) The interface of subunit A and subunit B. Carton models of subunits A and B are displayed in different colors (green and scan). (D) The interface of subunit A and subunit C. Carton models of subunits A and C are displayed in different colors (green and magenta). (E) The interface of subunit A and subunit D. Carton models of subunits A and D are displayed in different colors (green and yellow). The dashed lines represent the hydrogen bonds and salt-bridges between the respective donor and acceptor atoms. These pictures were produced using the software PyMOL 4.30.