5IS1:
reference: Structural Studies on the Extracellular Domain of Sensor Histidine Kinase YycG from Staphylococcus aureus and Its Functional Implications., Kim T, Choi J, Lee S, Yeo KJ, Cheong HK, Kim KK, J Mol Biol. 2016 Jul 4. pii: S0022-2836(16)30241-8. doi:, 10.1016/j.jmb.2016.06.019. PMID: 27389096

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