2W0N:
reference: Plasticity of the PAS domain and a potential role for signal transduction in the histidine kinase DcuS., Etzkorn M, Kneuper H, Dunnwald P, Vijayan V, Kramer J, Griesinger C, Becker S, Unden G, Baldus M, Nat Struct Mol Biol. 2008 Oct;15(10):1031-9. Epub 2008 Sep 28. PMID: 18820688

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