Abstract: The present invention relates in some aspects to mutant G protein coupled receptors (GPCRs) and methods for selecting those with increased stability. In certain aspects, the invention relates to the selection and preparation of mutant GPCRs which have increased stability under a particular condition compared to their respective parent proteins.

Abstract: Aspects of the invention relate to methods of producing a mutant GPCR with increased stability relative to its parent GPCR.

Abstract: A method for producing a mutant G-protein coupled receptor (GPCR) with increased stability relative to a parent GPCR, the method comprising making one or more mutations in the amino acid sequence that defines a parent GPCR, wherein (i) the one or more mutations are located within a window of/plus or minus 5 residues, where/is the position of amino acid residue 2.46 in the parent GPCR when the parent GPCR is a Class 1 GPCR, or where/is the position of an equivalent amino acid residue in the parent GPCR when the parent GPCR is a Class 2 or 3 GPCR, and/or (ii) the one or more mutations are located within an amino acid sequence of transmembrane helix 7 in the parent GPCR which amino acid sequence interacts with the window of/plus or minus 5 residues, to provide one or more mutants of the parent GPCR with increased stability.

Abstract: A method for producing a mutant G-protein coupled receptor (GPCR) with increased stability relative to a parent GPCR, the method comprising making one or more mutations in the amino acid sequence that defines a Class 1 parent GPCR, wherein (i) the one or more mutations are located within a window of i plus or minus 5 residues, where i is the position of amino acid residue 3.55 in the parent GPCR, and/or (ii) the one or more mutations are located within a window of i minus 2 to i residues, where i is the position of amino acid residue 5.63 in the parent GPCR, and/or (iii) the one or more mutations are located within a window of i minus 4 to i plus 1 residues, where i is the position of amino acid residue 7.42 in the parent GPCR, to provide one or more mutants of the parent GPCR with increased stability.

Abstract: There is provided a G protein coupled receptor (GPCR) or a polynucleotide encoding said GPCR for use as a vaccine. There is also provided methods of antagonising or agonising A GPCR in vivo comprising the administration of a GPCR or a polynucleotide encoding a GPCR to a subject. The invention further provides a GPCR for use in inhibiting an activity of a GPCR binding partner in a subject.

Abstract: According to the invention there is provided a compound of formula A1 which may be useful in the treatment of a condition or disorder ameliorated by the inhibition of the A1-A2b or, particularly, the A2a receptor wherein the compound of formula A1 has the structure, wherein, A represents Cy1 or HetA; Cy1 represents a 5- to 14-membered aromatic, fully saturated or partially unsaturated carbocyclic ring system comprising one, two or three rings, which Cy1 group is optionally substituted by one or more R4a substituents; HetA represents a 5- to 14-membered heterocyclic group that may be aromatic, fully saturated or partially unsaturated, and which contains one or more heteroatoms selected from O, S and N, which heterocyclic group may comprise one, two or three rings and which HetA group is optionally substituted by one or more R4b substituents; B represents a Cy2 or HetB; Cy2 represents a 3- to 10-membered aromatic, fully saturated or partially unsaturated carbocyclic ring system comprising one or two rings, whic

Abstract: The invention relates to mutant G-protein coupled receptors with increased conformational stability, and methods of use thereof. In some aspects, polynucleotides encoding the mutant G-protein coupled receptors are provided. In some aspects, host cells comprising the polynucleotides are provided. In some aspects, the invention relates to crystallized forms of the mutant G-protein coupled receptors, and methods of preparing the same.

Abstract: A method for producing a mutant G-protein coupled receptor (GPCR) with increased stability relative to a parent GPCR, the method comprising making one or more mutations in the amino acid sequence that defines a parent GPCR, wherein (i) the one or more mutations are located within a window of / plus or minus 5 residues, where / is the position of amino acid residue 2.46 in the parent GPCR when the parent GPCR is a Class 1 GPCR, or where / is the position of an equivalent amino acid residue in the parent GPCR when the parent GPCR is a Class 2 or 3 GPCR, and/or (ii) the one or more mutations are located within an amino acid sequence of transmembrane helix 7 in the parent GPCR which amino acid sequence interacts with the window of / plus or minus 5 residues, to provide one or more mutants of the parent GPCR with increased stability.

Abstract: The invention provides a method of predicting a three dimensional structural representation of a target protein of unknown structure, or part thereof, comprising: providing the coordinates of the turkey ?1-AR structure listed in Table A, Table B, Table C or Table D, optionally varied by a root mean square deviation of residue backbone atoms of not more than 1.235 A, or selected coordinates thereof; and predicting the three-dimensional structural representation of the target protein, or part thereof, by modelling the structural representation on all or the selected coordinates of the turkey ?1-AR. The invention also provides the use of the turkey ?1-AR coordinates to select or design one or more binding partners of ?1-AR.

Abstract: A computer readable medium comprising atomic coordinates for the human ?2 adrenoreceptor is provided. The computer readable medium programming for displaying a molecular model of the human ?2 adrenoreceptor, programming for identifying a compound that binds to said human ?2 adrenoreceptor and/or a database of structures of known test compounds. Also provided is a method comprising computationally identifying a compound that binds to the human ?2 adrenoreceptor using the atomic coordinates.

Abstract: A method for selecting a G-protein coupled receptor (GPCR) with increased stability, the method comprising (a) providing one or more mutants of a parent GPCR, (b) selecting a ligand, the ligand being one which hinds to the parent GPCR when the GPCR is residing in a particular conformation, (c) determining whether the or each mutant GPCR has increased stability with respect to binding the selected ligand compared to the stability of the parent GPCR with respect to binding that ligand, and (d) selecting those mutants that have an increased stability compared to the parent GPCR with respect to binding the selected ligand. Mutants of ?-adrenergic receptor, adenosine receptor and neurotensin receptor are also disclosed.