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Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
The heterodimeric extracellular GABAB1b receptor VFTs in the active state (PDB ID: 4MS4). Residues important for the Lobe 1-Lobe 1 and Lobe 2-Lobe 2 interactions are displayed in the yellow boxes. The approximate position of the binding pocket is displayed as a grey mesh in GABAB1.