>9D20_1|Chains A, C[auth E]|Activin receptor type-2B|Homo sapiens (9606)
ETRECIYYNANWELERTNQSGLERCEGEQDKRLHCYASWRNSSGTIELVKKGCWLDDFNCYDRQECVATEENPQVYFCCCEGNFCNERFTHLPE
>9D20_2|Chains B, D|Protein delta homolog 1|Homo sapiens (9606)
ANSCTPNPCENDGVCTDIGGDFRCRCPAGFIDKTCSRPVTNCASSPCQNGGTCLQHTQVSYECLCKPEFTGLTCVKKRALS