ACVR2A/B EGF-CFC Coreceptor p-ACVR1B:ACVR2:EGF-CFC PhosphoALK4:ActRII:EGF-CFC Complex Reactome DB_ID: 1181140 Reactome Database ID Release 431181140 Reactome, http://www.reactome.org ReactomeREACT_111667 has a Stoichiometric coefficient of 2