May have roles in neural function. Ectopic expression augments motility of gliomas. Promotes also axonal regeneration (By similarity). May also have functions in cellular differentiation (By similarity). Induces differentiation of fibroblast into myofibroblast and myofibroblast ameboid migration. 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. Interacts with the latency-associated peptides (LAP) of TGFB1 and TGFB2; the interaction results in a decrease in TGFB autoinduction (By similarity). Interacts with FLNA. Expressed in lung (at protein level). In embryos of gestational week (gw) 24, detected mostly in the epithelial cells of saccular surfaces. In gw 39, detected in the cells lining the alveolar surfaces as well as in the mesenchyme (at protein level). Down-regulated in emphysematous lung compared to normal lung. Phosphorylated on Ser-59. Phosphorylation decreases stability and activity.