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:000036436	activin receptor type-1 isoform 1, signal peptide removed phosphorylated 1 (mouse)	mACVR1/iso:1/SigPep-/Phos:1		acts_upstream_of_or_within	GO:0007178	cell surface receptor protein serine/threonine kinase signaling pathway			PMID:11376112	IDA	NCBITaxon:10090		UniProtKB:P37172-1	20080301	PRO:CNA