GPCR engineering yields high-resolution structural insights into beta2-adrenergic receptor function
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GPCR engineering yields high-resolution structural insights into beta2-adrenergic receptor function. / Rosenbaum, Daniel M; Cherezov, Vadim; Hanson, Michael A; Rasmussen, Søren Gøgsig Faarup; Thian, Foon Sun; Kobilka, Tong Sun; Choi, Hee-Jung; Yao, Xiao-Jie; Weis, William I; Stevens, Raymond C; Kobilka, Brian K.
In: Science (New York, N.Y.), Vol. 318, No. 5854, 23.11.2007, p. 1266-73.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - GPCR engineering yields high-resolution structural insights into beta2-adrenergic receptor function
AU - Rosenbaum, Daniel M
AU - Cherezov, Vadim
AU - Hanson, Michael A
AU - Rasmussen, Søren Gøgsig Faarup
AU - Thian, Foon Sun
AU - Kobilka, Tong Sun
AU - Choi, Hee-Jung
AU - Yao, Xiao-Jie
AU - Weis, William I
AU - Stevens, Raymond C
AU - Kobilka, Brian K
PY - 2007/11/23
Y1 - 2007/11/23
N2 - The beta2-adrenergic receptor (beta2AR) is a well-studied prototype for heterotrimeric guanine nucleotide-binding protein (G protein)-coupled receptors (GPCRs) that respond to diffusible hormones and neurotransmitters. To overcome the structural flexibility of the beta2AR and to facilitate its crystallization, we engineered a beta2AR fusion protein in which T4 lysozyme (T4L) replaces most of the third intracellular loop of the GPCR ("beta2AR-T4L") and showed that this protein retains near-native pharmacologic properties. Analysis of adrenergic receptor ligand-binding mutants within the context of the reported high-resolution structure of beta2AR-T4L provides insights into inverse-agonist binding and the structural changes required to accommodate catecholamine agonists. Amino acids known to regulate receptor function are linked through packing interactions and a network of hydrogen bonds, suggesting a conformational pathway from the ligand-binding pocket to regions that interact with G proteins.
AB - The beta2-adrenergic receptor (beta2AR) is a well-studied prototype for heterotrimeric guanine nucleotide-binding protein (G protein)-coupled receptors (GPCRs) that respond to diffusible hormones and neurotransmitters. To overcome the structural flexibility of the beta2AR and to facilitate its crystallization, we engineered a beta2AR fusion protein in which T4 lysozyme (T4L) replaces most of the third intracellular loop of the GPCR ("beta2AR-T4L") and showed that this protein retains near-native pharmacologic properties. Analysis of adrenergic receptor ligand-binding mutants within the context of the reported high-resolution structure of beta2AR-T4L provides insights into inverse-agonist binding and the structural changes required to accommodate catecholamine agonists. Amino acids known to regulate receptor function are linked through packing interactions and a network of hydrogen bonds, suggesting a conformational pathway from the ligand-binding pocket to regions that interact with G proteins.
KW - Adrenergic beta-Agonists
KW - Adrenergic beta-Antagonists
KW - Amino Acid Sequence
KW - Bacteriophage T4
KW - Binding Sites
KW - Cell Line
KW - Cell Membrane
KW - Crystallization
KW - Crystallography, X-Ray
KW - Drug Inverse Agonism
KW - Humans
KW - Immunoglobulin Fab Fragments
KW - Ligands
KW - Models, Molecular
KW - Molecular Sequence Data
KW - Muramidase
KW - Propanolamines
KW - Protein Conformation
KW - Protein Structure, Secondary
KW - Protein Structure, Tertiary
KW - Receptors, Adrenergic, beta-2
KW - Recombinant Fusion Proteins
U2 - 10.1126/science.1150609
DO - 10.1126/science.1150609
M3 - Journal article
C2 - 17962519
VL - 318
SP - 1266
EP - 1273
JO - Science
JF - Science
SN - 0036-8075
IS - 5854
ER -
ID: 120588742