Term Name:	quaternary ammonium group binding
Synonyms:	quaternary amine binding
Definition:	Binding to a quaternary ammonium group, including glycine betaine, choline, carnitine and proline. A quaternary ammonium group is any compound that can be regarded as derived from ammonium hydroxide or an ammonium salt by replacement of all four hydrogen atoms of the NH4+ ion by organic groups.
Ontology:	GO: Molecular Function [GO:0050997]    QuickGO    AmiGO