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:000000647	smad1 isoform 1 phosphorylated 1	BMP receptor-activated smad1|SMAD1/iso:1/Phos:1		enables	GO:0000981	DNA-binding transcription factor activity, RNA polymerase II-specific			PMID:10708949	TAS				20080301	PRO:CNA