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:O00238-1	bone morphogenetic protein receptor type-1B isoform 1 (human)	hBMPR1B/iso:1		acts_upstream_of_or_within	GO:0030509	BMP signaling pathway			PMID:10051328	IDA	NCBITaxon:9606		UniProtKB:O00238-1	20080301	PRO:CNA