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. 2023 Jul 25;14:4483. doi: 10.1038/s41467-023-40095-2

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© The Author(s) 2023

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 2 — Affinities measured as in Fig. 1 for phosphorylated (A) PhoR, (B) KdpD, (C) DevS, and (D) PrrB, for their respective cognate (gray) and some non-cognate (green) RRs implicated in crosstalk with the HKs. The affinities as mean ± S.E.M. from at least three repeats are indicated. Detailed measurements leading to the affinity estimates are in Figs. S8 and S9, including for any non-cognate RRs with weaker affinities than the cognate ones. The error bars represent mean ± S.E.M (n = 4 independent experiments for KdpD~P with KdpE and DevS~P with DevR interaction, n = 3 independent experiments for remaining bar plots).