May have roles in neural function. Ectopic expression promotes axonal regeneration. Augments also motility of gliomas (By similarity). May also have roles in cellular differentiation (By similarity). Induces differentiation of fibroblast into myofibroblast and myofibroblast ameboid migration (By similarity). Increases retinoic-acid regulation of lipid-droplet biogenesis (By similarity). Down-regulates the expression of TGFB1 and TGFB2 but not of TGFB3 (By similarity). May play a role in the regulation of alveolar generation (By similarity). Interacts with FLNA. Interacts with the latency-associated peptides (LAP) of TGFB1 and TGFB2; the interaction results in a decrease in TGFB autoinduction. Phosphorylated on Ser-59. Phosphorylation decreases stability and activity.