Conformational thermostabilization of the β1-adrenergic receptor in a detergent-resistant form
Reads0
Chats0
TLDR
A generic strategy for the isolation of detergent-solubilized thermostable mutants of a GPCR, the β1-adrenergic receptor, and the most stable mutant receptor, βAR-m23, was significantly more stable in a wide range of detergents ideal for crystallization and was preferentially in an antagonist conformation in the absence of ligand.Abstract:
There are ≈350 non-odorant G protein-coupled receptors (GPCRs) encoded by the human genome, many of which are predicted to be potential therapeutic targets, but there are only two structures available to represent the whole of the family. We hypothesized that improving the detergent stability of these receptors and simultaneously locking them into one preferred conformation will greatly improve the chances of crystallization. We developed a generic strategy for the isolation of detergent-solubilized thermostable mutants of a GPCR, the β1-adrenergic receptor. The most stable mutant receptor, βAR-m23, contained six point mutations that led to an apparent Tm 21°C higher than the native protein, and, in the presence of bound antagonist, βAR-m23 was as stable as bovine rhodopsin. In addition, βAR-m23 was significantly more stable in a wide range of detergents ideal for crystallization and was preferentially in an antagonist conformation in the absence of ligand.read more
Citations
More filters
Journal ArticleDOI
The structure and function of G-protein-coupled receptors
TL;DR: G-protein-coupled receptors mediate most of the authors' physiological responses to hormones, neurotransmitters and environmental stimulants, and so have great potential as therapeutic targets for a broad spectrum of diseases.
Journal ArticleDOI
Chemistry and Biology Of Multicomponent Reactions
TL;DR: This paper presents a new approach to drug design called “combinatorial biosynthesis and drug discovery through nanofiltration”, which combines the efforts of a single investigator with those of a number of other scientists.
Journal ArticleDOI
The 2.6 Angstrom Crystal Structure of a Human A2A Adenosine Receptor Bound to an Antagonist.
Veli-Pekka Jaakola,Mark T. Griffith,Michael A. Hanson,Vadim Cherezov,Ellen Y.T. Chien,J. Robert Lane,Adriaan P. IJzerman,Raymond C. Stevens +7 more
TL;DR: The crystal structure of the human A2A adenosine receptor is determined, in complex with a high-affinity subtype-selective antagonist, ZM241385, to 2.6 angstrom resolution and suggests a role for ZM 241385 in restricting the movement of a tryptophan residue important in the activation mechanism of the class A receptors.
Journal ArticleDOI
Structure of a beta1-adrenergic G-protein-coupled receptor.
Tony Warne,Maria Josefa Serrano-Vega,Jillian G. Baker,Rouslan Moukhametzianov,Patricia C. Edwards,Richard Henderson,Andrew G. W. Leslie,Christopher G. Tate,Gebhard F. X. Schertler +8 more
TL;DR: G-protein-coupled receptors have a major role in transmembrane signalling in most eukaryotes and many are important drug targets and here the 2.7 Å resolution crystal structure of a β1-adrenergic receptor in complex with the high-affinity antagonist cyanopindolol is reported.
Journal ArticleDOI
Agonist-bound adenosine A2A receptor structures reveal common features of GPCR activation
Guillaume Lebon,Tony Warne,Patricia C. Edwards,K.A. Bennett,Christopher J. Langmead,Andrew G. W. Leslie,Christopher G. Tate +6 more
TL;DR: Two crystal structures of the thermostabilized human adenosine A2A receptor bound to its endogenous agonistAdenosine and the synthetic agonist NECA are presented, indicating that the contraction of the ligand-binding pocket caused by the inward motion of helices 3, 5 and 7 may be a common feature in the activation of all GPCRs.
References
More filters
Journal ArticleDOI
Crystal Structure of Rhodopsin: A G Protein-Coupled Receptor
Krzysztof Palczewski,Takashi Kumasaka,Tetsuya Hori,Craig A. Behnke,H. Motoshima,Brian A. Fox,I. Le Trong,David C. Teller,Tetsuji Okada,Ronald E. Stenkamp,Masaki Yamamoto,Masashi Miyano +11 more
TL;DR: This article determined the structure of rhodopsin from diffraction data extending to 2.8 angstroms resolution and found that the highly organized structure in the extracellular region, including a conserved disulfide bridge, forms a basis for the arrangement of the sevenhelix transmembrane motif.
Journal ArticleDOI
High-Resolution Crystal Structure of an Engineered Human β2-Adrenergic G Protein–Coupled Receptor
Vadim Cherezov,Daniel M. Rosenbaum,Michael A. Hanson,Søren G. F. Rasmussen,Foon Sun Thian,Tong Sun Kobilka,Hee Jung Choi,Peter Kuhn,William I. Weis,Brian K. Kobilka,Raymond C. Stevens +10 more
TL;DR: Although the location of carazolol in the β2-adrenergic receptor is very similar to that of retinal in rhodopsin, structural differences in the ligand-binding site and other regions highlight the challenges in using rhodopin as a template model for this large receptor family.
Journal ArticleDOI
A rapid, sensitive, and specific method for the determination of protein in dilute solution
TL;DR: This protein assay is described in which the sample is precipitated with trichloroacetic acid in the presence of sodium dodecylsulfate, filtered off on a Millipore membrane and stained with Amidoschwarz 10B, and its absorbance determined at 630 nm.
Journal ArticleDOI
Crystal structure of the human beta2 adrenergic G-protein-coupled receptor.
Søren G. F. Rasmussen,Hee Jung Choi,Daniel M. Rosenbaum,Tong Sun Kobilka,Foon Sun Thian,Patricia C. Edwards,Manfred Burghammer,Venkata R. P. Ratnala,Ruslan Sanishvili,Robert F. Fischetti,Gebhard F. X. Schertler,William I. Weis,Brian K. Kobilka +12 more
TL;DR: In this paper, the human beta2 adrenoceptor (beta2AR) was crystallized in a lipid environment when bound to an inverse agonist and in complex with a Fab that binds to the third intracellular loop.
Journal ArticleDOI
Structure and mechanism of the lactose permease of Escherichia coli
TL;DR: The crystal structure at 3.5 angstroms of the Escherichia coli lactose permease reveals the sugar-binding site in the cavity, and residues that play major roles in substrate recognition and proton translocation are identified.