Structural studies of periplasmic proteins from the type IV secretion system of Xanthomonas citri (Xac) - Oliveira, Luciana Coutinho de; Souza, Diorge Paulo de; Wienk, Hans; Ingen, Hugo Van; Favaro, Denize; Boelens, Rolf; Farah, Chuck Shaker; Salinas, Roberto Kopke (Annual Meeting of the Brazilian Biochemistry and Molecular Biology Society (SBBq), 2014)