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:000036553	smad1 isoform 1 phosphorylated and ubiquitinated 1 (human)	hSMAD1/iso:1/PhosUbiq:1|UniProtKB:Q15797-1, Ser-463/Ser-465, MOD:00046|MOD:01148		acts_upstream_of_or_within	GO:0030514	negative regulation of BMP signaling pathway			PMID:12857866	IDA	NCBITaxon:9606		UniProtKB:Q15797-1	20080301	PRO:CNA