4MBR:
reference: Characterization of fibrinogen binding by glycoproteins Srr1 and Srr2 of Streptococcus agalactiae., Seo HS, Misanov G, Seepersaud R, Doran KS, Dubrovska I, Shuvalova L, Anderson WF, Iverson TM, Sullam PM, J Biol Chem. 2013 Oct 28. PMID: 24165132

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