VMO1 GI:222144305 vitelline membrane outer layer 1 isoform 3 1 mergagakll plllllratg ftcaqtdgrn gytavievts ggpwgdwawp 50 51 emcpdgffas gfslkveppq gipgddtaln girlhcargn vlgnthvlgr 100 101 me