5DL2:
reference: Structural and functional analysis of RopB - a major virulence regulator in Streptococcus pyogenes., Makthal N, Gavagan M, Do H, Olsen RJ, Musser JM, Kumaraswami M, Mol Microbiol. 2015 Dec 29. doi: 10.1111/mmi.13294. PMID: 26714274

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