Mediates aggregation, biofilm formation and adhesion to a range of extracellular matrix (ECM) proteins, such as fibronectin, fibrinogen, laminin and collagen types I, II, III, and V. Mediates adhesion to intestinal epithelial cells. Homotrimer. The C-terminal translocator domain is localized in the outer membrane and the passenger domain is at the cell surface. Expression is negatively regulated by H-NS. The signal peptide, cleaved at the inner membrane, guides the autotransporter protein to the periplasmic space. Then, insertion of the C-terminal translocator domain in the outer membrane forms a hydrophilic pore for the translocation of the passenger domain to the bacterial cell surface. Belongs to the autotransporter-2 (AT-2) (TC 1.B.40) family.