Term Name:	molecular tag activity
Synonyms:	tag
Definition:	A molecular function exhibited by a protein that is covalently attached (AKA tagged or conjugated) to another molecule (for example a protein or a lipid) where it acts as a marker, recognized by the cellular apparatus to target the tagged protein for some cellular process such as modification, sequestration, transport or degradation.
Ontology:	GO: Molecular Function [GO:0141047]    QuickGO    AmiGO