4YTG:
reference: Structure and mechanism of a bacterial host-protein citrullinating virulence factor, Porphyromonas gingivalis peptidylarginine deiminase., Goulas T, Mizgalska D, Garcia-Ferrer I, Kantyka T, Guevara T, Szmigielski B, Sroka A, Millan C, Uson I, Veillard F, Potempa B, Mydel P, Sola M, Potempa J, Gomis-Ruth FX, Sci Rep. 2015 Jul 1;5:11969. doi: 10.1038/srep11969. PMID: 26132828

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