function:Ligand for members of the frizzled family of seven transmembrane receptors. Probable developmental protein. May be a signaling molecule important in CNS development. Is likely to signal over only few cell diameters.,similarity:Belongs to the Wnt family.,subunit:Interacts with PORCN. Interacts with RSPO1, RSPO2 and RSPO3.,
Secreted, extracellular space, extracellular matrix . Secreted .
Testis,