s18 Cp18 CH18_DROME Chorion membrane (egg shell) protein; plays a role in protecting the egg from the environment. CG6517 Chorion protein S18 172 MMKFMCICLCAISAVSANSYGRSRGGYGGAPVGGYAYQVQPALTVKAIVPSYGGGYGGNHGGYGGAYESVPVPVSSAYSGANVGSQYSGSGYGGAPPVDAQAIALAKLALAAPSAGAPLVWKEAPRYAQPVYPPTSYVNQEYGHSEKVKGGSAAAAASSVAAGKKGYKRPSY