Effector that interacts with isoforms of host protein phosphatase type 1c (PP1c), mimicking a regulatory subunit and causing their re-localization within the host nucleus (PubMed:26822079). The holoenzymes formed with PP1c isoforms act to promote late blight by attenuating jasmonic acid (JA)- and salicylic acid (SA)-mediated transcriptional responses of the host plant (PubMed:26822079). Interacts with the potato PP1c family proteins PP1c-1, PP1c-2 and PP1c-3. Expression is up-regulated during the biotrophic phase of infection on potato plants. The RxLR-dEER motif acts to carry the protein into the host cell cytoplasm through binding to cell surface phosphatidylinositol-3-phosphate. The KVTF motif (residues 138 to 141) is required for the interaction with the PP1c family proteins PP1c-1, PP1c-2 and PP1c-3. Belongs to the RxLR effector family.