4D6Y:
reference: Snapshots of Conformational Changes Shed Light into the NtrX Receiver Domain Signal Transduction Mechanism., Fernandez I, Otero LH, Klinke S, Carrica MD, Goldbaum FA, J Mol Biol. 2015 Jun 23. pii: S0022-2836(15)00350-2. doi:, 10.1016/j.jmb.2015.06.010. PMID: 26113057

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