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. 2016 Jun 28;7:1010. doi: 10.3389/fmicb.2016.01010

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Copyright © 2016 Ortiz de Orué Lucana, Hickey, Hensel, Klare, Geremia, Tiufiakova and Torda.

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) or licensor 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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Dimer similarities from bacterial octamers (left) and the eukaryotic decamer (right). Label colors correspond to protein colors. The heme (gray) coordinates come from 5CX7. PDB codes PduOC: 5CX7, HbpS: 3FPV; OrfY: 2A2L; Ybr137wp: 4CLC.