PRO_ID	Object_term	Object_syny	Modifier	Relation	Ontology_ID	Ontology_term	Relative_to	Interaction_with	Evidence_source	Evidence_code	Taxon	Inferred_from	DB_ID	Date	Assigned_by	Comment
PR:P27040-4	activin receptor type-2B isoform ActR-IIB4 (mouse)	mACVR2B/iso:ActR-IIB4		located_in	GO:0005886	plasma membrane			PMID:1310075	IDA	NCBITaxon:10090		UniProtKB:P27040-4	20080301	PRO:CNA	
PR:P27040-4	activin receptor type-2B isoform ActR-IIB4 (mouse)	mACVR2B/iso:ActR-IIB4		part_of	GO:0048179	activin receptor complex			PMID:1310075	IDA	NCBITaxon:10090		UniProtKB:P27040-4	20080301	PRO:CNA