Effector that suppresses plant defense responses during the early stages of pathogen infection (PubMed:21653195). Suppresses cell death induced by effectors and PAMPs in plant hosts (PubMed:21653195). Avh240 dimerizes and localizes at the plasma membrane to interfere with aspartic protease AP1 secretion, which presents an effective mechanism by which effector proteins suppress plant apoplastic immunity (By similarity). Homodimer (By similarity). Interacts with host soybean aspartic protease AP1 (By similarity). Plasma membrane localization is independent on self-dimerization but required for virulence. Expression is strongly up-regulated during the early stages of infection. The RxLR-dEER motif acts to carry the protein into the host cell cytoplasm through binding to cell surface phosphatidylinositol-3-phosphate. The alpha 1 and alpha 2 helices (residues 58-108) are required for the localization the plasma membrane. Belongs to the RxLR effector family.