CGB GI:4502789 chorionic gonadotropin beta 3 subunit precursor 1 memfqgllll lllsmggtwa skeplrprcr pinatlavek egcpvcitvn 50 51 tticagycpt mtrvlqgvlp alpqvvcnyr dvrfesirlp gcprgvnpvv 100 101 syavalscqc alcrrsttdc ggpkdhpltc ddprfqdsss skapppslps 150 151 psrlpgpsdt pilpq