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:000000070	activin receptor type-2A	activin receptor type IIA|ACTR-IIA|ACTRIIA|ACVR2|ACVR2A		enables	GO:0048185	activin binding			PIRSF:PIRSF500457	ISS		PIRSF:PIRSF500457|UniProtKB:P27037|UniProtKB:P27038|UniProtKB:Q8BRV4	PIRSF:PIRSF500457|UniProtKB:P27037|UniProtKB:P27038|UniProtKB:Q8BRV4	20080301	PRO:CNA	
PR:000000070	activin receptor type-2A	activin receptor type IIA|ACTR-IIA|ACTRIIA|ACVR2|ACVR2A		acts_upstream_of_or_within	GO:0032924	activin receptor signaling pathway			PIRSF:PIRSF500457	ISS		PIRSF:PIRSF500457|UniProtKB:P27037|UniProtKB:P27038|UniProtKB:Q8BRV4	PIRSF:PIRSF500457|UniProtKB:P27037|UniProtKB:P27038|UniProtKB:Q8BRV4	20080301	PRO:CNA