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 transmembrane receptor protein serine/threonine kinase signaling pathway PMID:11376112 IDA NCBITaxon:10090 UniProtKB:P37172-1 20080301 PRO:CNA