6W2Y:
reference: Structures of metabotropic GABAB receptor., Papasergi-Scott MM, Robertson MJ, Seven AB, Panova O, Mathiesen JM, Skiniotis G, Nature. 2020 Jun 24. pii: 10.1038/s41586-020-2469-4. doi:, 10.1038/s41586-020-2469-4. PMID: 32580208

This OCA Structure page
uses Jmol, developed by the Jmol Development Team (documentation).