molecular tag activity [GO_0141047]

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.

molecular tag activity

ID: GO_0141047

Class

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.

Use this term to annotate conjugated tags, not for conjugating enzymes. At the time of writing, all known gene products with this activity are ubiquitin-like, either based on overall sequence similarity or the presence of common motifs and structures.

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Classification

Alternative Names

Synonym Scope Reference
covalent modifier broad synonym
tag exact synonym