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:000000105	nodal protein	NODAL		enables	GO:0016015	morphogen activity			PIRSF:PIRSF037400	ISS		PIRSF:PIRSF037400	PIRSF:PIRSF037400|UniProtKB:P43021|UniProtKB:Q96S42	20080301	PRO:CNA	
PR:000000105	nodal protein	NODAL		acts_upstream_of_or_within	GO:0007368	determination of left/right symmetry			PIRSF:PIRSF037400	ISS		PIRSF:PIRSF037400	PIRSF:PIRSF037400|UniProtKB:P43021|UniProtKB:Q96S42	20080301	PRO:CNA