RSPO4 GI:90970328 R-spondin family, member 4 isoform 2 precursor 1 mraplcllll vahavdmlal nrrkkqvgtg lggnctgcii cseengcstc 50 51 qqrlflfirr egirqygkcl hdcppgyfgi rgqevnrckk cgatcescfs 100 101 qdfcirckrq fylykgkclp tcppgtlahq ntrecqersp gqkkgrkdrr 150 151 prkdrkldrr ldvrprqpgl qp