as a result of binding to l-aa-d-ala-d-ala groups in wall intermediates , glycopeptides inhibit , apparently by steric hindrance , the formation of the backbone glycan chains ( catalysed by peptidoglycan polymerase ) from the simple wall subunits as they are extruded through the cytoplasmic membrane .
C0017953
glycopeptides
C0030958
peptidoglycan