May function as activator of the canonical Wnt signaling pathway, in association with DVL3, upstream of CTNNB1/beta-catenin. Positively regulates Toll-like receptor (TLR) signaling in response to agonist probably by competing with the negative FLII regulator for MYD88-binding. Interacts (via N-terminus) with DVL3. Interacts with FLII. Weakly interacts with MYD88 in resting cells. Following LPS-stimulation, the interaction with MYD88 is rapidly enhanced; the complex gradually dissociates to basal levels after 6 hours of stimulation. Interaction with MYD88 is regulated by LPS-induced phosphorylation at Ser-202. In the presence of LPS, competes with FLII for MYD88-binding. Widely expressed, with highest levels in heart and skeletal muscle. Ser-190 and Ser-202 are phosphorylated in response to LPS stimulation. Ser-202 phosphorylation regulates the LPS-induced interaction with MYD88. Belongs to the LRRFIP family.