The present invention is directed to novel polypeptides having sequencesimilarity to Stra6, a murine retinoic acid responsive protein, and to nucleicacid molecules encoding those polypeptides. Also provided herein are vectorsand host cells comprising those nucleic acid sequences, chimeric polypeptidemolecules comprising the polypeptides of the present invention fused toheterologous polypeptide sequences, antibodies which bind to the polypeptidesof the present invention and to methods for producing the polypeptides of thepresent invention.