A TCR binds to antagonist ligands with lower affinities and faster dissociation rates than to agonists.
Lyons DS, Lieberman SA, Hampl J, Boniface JJ, Chien Y, Berg LJ, Davis MM. A TCR binds to antagonist ligands with lower affinities and faster dissociation rates than to agonists. Immunity. 1996 Jul; 5(1):53-61.