Steric modulation

A second GABA receptor subtype, the GABA-B receptor (Fig. 8—12) is not allo-sterically modulated by benzodiazepines but binds selectively to the muscle relaxant baclofen. Its physiological role is not well known yet, but does not appear to be closely linked to anxiety disorders or to anxiolytics. 

Mechanisms of Type III Polyketide Synthase Functional Diversity From Steric Modulation to the Reaction Partitioning Model... 

Zaitsev V, Rosokha SV, Head-Gordon M, Kochi JK (2006) Steric modulations in the reversible dimerizations of phenalenyl radicals via unusually weak carbon-centered n- and (T-bonds. J Org Chem 71 520-526... 

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