Effector that suppresses the host mitogen-activated protein kinase (MAPK)-based plant defense activated by the Phytophthora elicitor to promote colonization of the Phytophthora pathogen (PubMed:18390593, PubMed:23530601, Ref.4). Neither directly inhibits MAPK kinase activity nor interacts with MAPK proteins but acts downstream by suppressing transcriptional activation of resistance marker genes such as FRK1, WRKY22 and WRKY29 (Ref.4). Confers avirulence in the presence of resistance protein Rps1k in host (PubMed:23530601). The RxLR-dEER motif acts to carry the protein into the host cell cytoplasm through binding to cell surface phosphatidylinositol-3-phosphate. The C-terminal region contains 1 L, 2 W and 2 Y motifs. W, Y and L motifs are present in at least half of the identified oomycete RXLR-dEER effector candidates and W and Y are critical for the functions of the very large number of predicted oomycete effectors that contain them. Results in loss of the avirulence phenotype on soybean cultivar containing the resistance protein Rps1k. Belongs to the RxLR effector family.