4YWZ:
reference: Structure and mechanism of the essential two-component signal-transduction system WalKR in Staphylococcus aureus., Ji Q, Chen PJ, Qin G, Deng X, Hao Z, Wawrzak Z, Yeo WS, Quang JW, Cho H, Luo GZ, Weng X, You Q, Luan CH, Yang X, Bae T, Yu K, Jiang H, He C, Nat Commun. 2016 Mar 18;7:11000. doi: 10.1038/ncomms11000. PMID: 26987594

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