3.4.24.B9 ADAM9 endopeptidase cell-cell junction ADAM9 localises to cell-cell junctions and colocalises with cell-cell junction proteins in endothelial cells. Expression is required in two adjacent cells for localisation to cell-cell junctions. ADAM9 can self-associate through ectodomain interactions. The soluble ADAM9 ectodomain cannot increase endothelial monolayer permeability or inhibit monocyte-endothelial adhesion, but can inhibit monocyte-endothelial transmigration 5911 752668