title: Insights into the structure of class B GPCRs.
abstract: The secretin-like (class B) family of G protein-coupled receptors (GPCRs) are key players in hormonal homeostasis and are interesting drug targets for the treatment of several metabolic disorders (such as type 2 diabetes, osteoporosis, and obesity) and nervous system diseases (such as migraine, anxiety, and depression). The recently solved crystal structures of the transmembrane domains of the human glucagon receptor and human corticotropin-releasing factor receptor 1 have opened up new opportunities to study the structure and function of class B GPCRs. The current review shows how these structures offer more detailed explanations to previous biochemical and pharmacological studies of class B GPCRs, and provides new insights into their interactions with ligands.
authors.affiliation: Heptares Therapeutics Ltd, BioPark, Broadwater Road, Welwyn Garden City, AL7 3AX, UK.
authors.forename: Kaspar
authors.initials: K
authors.lastname: Hollenstein
authors.affiliation: Division of Medicinal Chemistry, Faculty of Sciences, Amsterdam Institute for Molecules, Medicines and Systems (AIMMS), VU University Amsterdam, De Boelelaan 1083, 1081 HV Amsterdam, The Netherlands.
authors.forename: Chris
authors.initials: C
authors.lastname: de Graaf
authors.affiliation: Heptares Therapeutics Ltd, BioPark, Broadwater Road, Welwyn Garden City, AL7 3AX, UK.
authors.forename: Andrea
authors.initials: A
authors.lastname: Bortolato
authors.affiliation: The National Center for Drug Screening and the CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences (CAS), 189 Guo Shou Jing Road, Shanghai, 201203, China.
authors.forename: Ming-Wei
authors.initials: MW
authors.lastname: Wang
authors.affiliation: Heptares Therapeutics Ltd, BioPark, Broadwater Road, Welwyn Garden City, AL7 3AX, UK. Electronic address: fiona.marshall@heptares.com.
authors.forename: Fiona H
authors.initials: FH
authors.lastname: Marshall
authors.affiliation: Department of Integrative Structural and Computational Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037, USA. Electronic address: stevens@scripps.edu.
authors.forename: Raymond C
authors.initials: RC
authors.lastname: Stevens
mesh_terms: D000595:Amino Acid Sequence; D018360:Crystallography, X-Ray; D006801:Humans; D008958:Models, Molecular; D008969:Molecular Sequence Data; D011487:Protein Conformation; D043562:Receptors, G-Protein-Coupled / Q000737:chemistry*; D011964:Receptors, Gastrointestinal Hormone / Q000737:chemistry*
chemical_list: D043562:Receptors, G-Protein-Coupled; D011964:Receptors, Gastrointestinal Hormone; C029937:secretin receptor
keywords: class B G protein-coupled receptor (GPCR); corticotropin-releasing factor receptor 1 (CRF(1)); crystal structure; glucagon receptor (GCGR); ligand binding