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:000000030	thrombospondin subgroup B			enables	GO:0008201	heparin binding			PIRSF:PIRSF002479	ISS		PIRSF:PIRSF002479	PIRSF:PIRSF002479	20080301	PRO:CNA