>6H3R_1|Chains A, B|Mothers against decapentaplegic homolog|Homo sapiens (9606)
GSSPVVKRLLGWKKSAGGSGGAGGGEQNGQEEKWSEKAVKSLVKKLKKTGRLDELEKAITTQNMNTKCVTIPRSLDGRLQVSHRKGLPHVIYCRLWRWPDLHSHHELKAIENCEYAFNLKKDEVCVNPYHYQRVETPSS
>6H3R_2|Chains C, D|DNA (5'-D(P*GP*AP*GP*TP*GP*TP*CP*TP*GP*CP*AP*GP*AP*CP*AP*CP*TP*C)-3')|Homo sapiens (9606)
GAGTGTCTGCAGACACTC