Scaffold protein that may play a role in cell adhesion, cell spreading and in the reorganization of the actin cytoskeleton. May inhibit cell growth (By similarity). Regulates cranial neural crest migration. Acts together with prickle1 to control axial elongation (By similarity). Detected along actin stress fibers. The N-terminal and the C-terminal halves of the protein can associate with each other, thereby hindering interactions with other proteins. Belongs to the prickle / espinas / testin family.