Immunogen sequence: TIDLKQALLI HNRKLERVKE QLKLSLENKN GIAQTGELTV VLDGLVIEQE NITNCSSSPT IEIQENGDAL HENGEPSART TARLAVEGTN GIDNHV Highest antigen sequence identity to the following orthologs: Mouse - 83%, Rat - 82%. WW domain-containing proteins are found in