1XKZ:
reference: X-ray crystal structure of the acylated beta-lactam sensor domain of BlaR1 from Staphylococcus aureus and the mechanism of receptor activation for signal transduction., Birck C, Cha JY, Cross J, Schulze-Briese C, Meroueh SO, Schlegel HB, Mobashery S, Samama JP, J Am Chem Soc 2004 Nov 3;126(43):13945-7. PMID: 15506754

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