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:000000015	follistatin	activin-binding protein|FS|FST		acts_upstream_of_or_within	GO:0032926	negative regulation of activin receptor signaling pathway			PIRSF:PIRSF002278	ISS		PIRSF:PIRSF002278	PIRSF:PIRSF002278|UniProtKB:P19883|UniProtKB:P47931	20080301	PRO:CNA