Effector protein that contributes to pathogen virulence (PubMed:29671919). Targets members of the RABA GTPases subfamily to inhibit vesicular secretion, leading to an accumulation of secretory proteins in the endoplasmic reticulum (PubMed:29671919). Interacts with Arabidopsis thaliana RABA GTPases including RABA1a, RABA1b, RABA1c, RABA1d, RABA1f, RABA2a, RABA2c, RABA2d, RABA4a, RABA4b and RABA4c. The subcellular localization to plasma and vesicular membranes is most likely the result of binding of RxLR24 to membrane-localized RABA proteins. Expressed early in the interaction with Arabidopsis plants. 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 part (residues 105 to 155) is required for the binding to RABA GTPasesproteins, causes redirection of the truncated effector to the cytoplasm, and leads tio the loss of the ability to inhibit the host secretory pathway. Belongs to the RxLR effector family.