>9N4K_1|Chains A, D[auth F]|Activin receptor type-2B|Homo sapiens (9606)
SGRGEAETRECIYYNANWELERTNQSGLERCEGEQDKRLHCYASWRNSSGTIELVKKGCWLDDFNCYDRQECVATEENPQVYFCCCEGNFCNERFTHLPEAGGPEVTYEPPPTAPTGGGTHTCPPCPAPELLG
>9N4K_2|Chains B, C[auth E]|Bone morphogenetic protein 6|Homo sapiens (9606)
SASSRRRQQSRNRSTQSQDVARVSSASDYNSSELKTACRKHELYVSFQDLGWQDWIIAPKGYAANYCDGECSFPLNAHMNATNHAIVQTLVHLMNPEYVPKPCCAPTKLNAISVLYFDDNSNVILKKYRNMVVRACGCH
>9N4K_3|Chains E[auth C], F[auth D]|Activin receptor type-1|Homo sapiens (9606)
MEDEKPKVNPKLYMCVCEGLSCGNEDHCEGQQCFSSLSINDGFHVYQKGCFQVYEQGKMTCKTPPSPGQAVECCQGDWCNRNITAQLPTKGKSFPGTQNFHLETGGGTHTCPPCPAPELLG