Fig. 6.
Graphic summary of results. Barsindicate which residues fall into each of the following categories:Mediates KD-GABA, mutation of this residue alters microscopic affinity for GABA; Mediates Efficacy, mutation of this residue reduces efficacy of P4S;Accessible to MTS, we can detect reaction of MTSEA-biotin with a cysteine introduced at this position; In Binding Pocket, the rate at which MTSEA-biotin reacts with a cysteine introduced at this residue is slowed by the presence of both GABA and SR-95531. Relative Rxn. Rate, The height of thebar is scaled to the log ofk2 for each mutant with MTSEA-biotin.