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- PDB-7she: Cryo-EM structure of human GPR158 -

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Basic information

Entry
Database: PDB / ID: 7she
TitleCryo-EM structure of human GPR158
ComponentsG-protein coupled receptor 158
KeywordsSIGNALING PROTEIN / Receptor
Function / homology
Function and homology information


G protein-coupled glycine receptor activity / regulation of G protein-coupled receptor signaling pathway / positive regulation of neurotransmitter secretion / regulation of synapse organization / protein localization to plasma membrane / cell projection / enzyme activator activity / postsynaptic density membrane / brain development / cognition ...G protein-coupled glycine receptor activity / regulation of G protein-coupled receptor signaling pathway / positive regulation of neurotransmitter secretion / regulation of synapse organization / protein localization to plasma membrane / cell projection / enzyme activator activity / postsynaptic density membrane / brain development / cognition / transmembrane signaling receptor activity / presynaptic membrane / postsynaptic membrane / G protein-coupled receptor signaling pathway / nucleus / plasma membrane
Similarity search - Function
G-protein coupled receptor 158/179 / : / GPR158/179 extracellular domain / G-protein coupled receptors family 3 profile. / GPCR family 3, C-terminal / 7 transmembrane sweet-taste receptor of 3 GCPR
Similarity search - Domain/homology
CHOLESTEROL / Chem-EIJ / 1,2-dioleoyl-sn-glycero-3-phosphoethanolamine / Metabotropic glycine receptor
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.4 Å
AuthorsPatil, D.N. / Singh, S. / Singh, A.K. / Martemyanov, K.A.
Funding support United States, 1items
OrganizationGrant numberCountry
National Institutes of Health/National Institute of Mental Health (NIH/NIMH) United States
CitationJournal: Science / Year: 2022
Title: Cryo-EM structure of human GPR158 receptor coupled to the RGS7-Gβ5 signaling complex.
Authors: Dipak N Patil / Shikha Singh / Thibaut Laboute / Timothy S Strutzenberg / Xingyu Qiu / Di Wu / Scott J Novick / Carol V Robinson / Patrick R Griffin / John F Hunt / Tina Izard / Appu K Singh ...Authors: Dipak N Patil / Shikha Singh / Thibaut Laboute / Timothy S Strutzenberg / Xingyu Qiu / Di Wu / Scott J Novick / Carol V Robinson / Patrick R Griffin / John F Hunt / Tina Izard / Appu K Singh / Kirill A Martemyanov /
Abstract: GPR158 is an orphan G protein–coupled receptor (GPCR) highly expressed in the brain, where it controls synapse formation and function. GPR158 has also been implicated in depression, carcinogenesis, ...GPR158 is an orphan G protein–coupled receptor (GPCR) highly expressed in the brain, where it controls synapse formation and function. GPR158 has also been implicated in depression, carcinogenesis, and cognition. However, the structural organization and signaling mechanisms of GPR158 are largely unknown. We used single-particle cryo–electron microscopy (cryo-EM) to determine the structures of human GPR158 alone and bound to an RGS signaling complex. The structures reveal a homodimeric organization stabilized by a pair of phospholipids and the presence of an extracellular Cache domain, an unusual ligand-binding domain in GPCRs. We further demonstrate the structural basis of GPR158 coupling to RGS7-Gβ5. Together, these results provide insights into the unusual biology of orphan receptors and the formation of GPCR-RGS complexes.
History
DepositionOct 8, 2021Deposition site: RCSB / Processing site: RCSB
Revision 1.0Dec 1, 2021Provider: repository / Type: Initial release
Revision 2.0Jan 19, 2022Group: Advisory / Atomic model ...Advisory / Atomic model / Author supporting evidence / Data collection / Data processing / Database references / Derived calculations / Non-polymer description / Source and taxonomy / Structure summary
Category: atom_site / chem_comp ...atom_site / chem_comp / citation / database_PDB_caveat / em_ctf_correction / em_imaging / em_particle_selection / em_single_particle_entity / em_software / entity / entity_src_gen / pdbx_contact_author / pdbx_entity_instance_feature / pdbx_entity_nonpoly / pdbx_nonpoly_scheme / pdbx_poly_seq_scheme / pdbx_struct_sheet_hbond / pdbx_unobs_or_zero_occ_atoms / pdbx_unobs_or_zero_occ_residues / pdbx_validate_chiral / pdbx_validate_close_contact / pdbx_validate_main_chain_plane / pdbx_validate_peptide_omega / pdbx_validate_polymer_linkage / pdbx_validate_rmsd_angle / pdbx_validate_rmsd_bond / pdbx_validate_torsion / struct / struct_asym / struct_conf / struct_conn / struct_sheet / struct_sheet_order / struct_sheet_range
Item: _chem_comp.formula / _chem_comp.formula_weight ..._chem_comp.formula / _chem_comp.formula_weight / _chem_comp.id / _chem_comp.mon_nstd_flag / _chem_comp.name / _chem_comp.pdbx_synonyms / _chem_comp.type / _citation.journal_volume / _citation.page_first / _citation.page_last / _citation.pdbx_database_id_DOI / _citation.year / _em_ctf_correction.type / _em_imaging.nominal_defocus_max / _em_imaging.nominal_defocus_min / _em_software.category / _em_software.fitting_id / _em_software.image_processing_id / _em_software.imaging_id / _em_software.name / _em_software.version / _entity.formula_weight / _entity.pdbx_description / _entity.pdbx_number_of_molecules / _entity_src_gen.gene_src_common_name / _pdbx_entity_nonpoly.comp_id / _pdbx_entity_nonpoly.name / _pdbx_nonpoly_scheme.auth_mon_id / _pdbx_nonpoly_scheme.auth_seq_num / _pdbx_nonpoly_scheme.entity_id / _pdbx_nonpoly_scheme.mon_id / _pdbx_nonpoly_scheme.pdb_mon_id / _pdbx_nonpoly_scheme.pdb_seq_num / _pdbx_nonpoly_scheme.pdb_strand_id / _pdbx_poly_seq_scheme.auth_mon_id / _pdbx_poly_seq_scheme.auth_seq_num / _pdbx_poly_seq_scheme.pdb_mon_id / _pdbx_validate_close_contact.auth_asym_id_1 / _pdbx_validate_close_contact.auth_asym_id_2 / _pdbx_validate_close_contact.auth_atom_id_1 / _pdbx_validate_close_contact.auth_atom_id_2 / _pdbx_validate_close_contact.auth_comp_id_1 / _pdbx_validate_close_contact.auth_comp_id_2 / _pdbx_validate_close_contact.auth_seq_id_1 / _pdbx_validate_close_contact.auth_seq_id_2 / _pdbx_validate_close_contact.dist / _struct.title / _struct_asym.entity_id / _struct_conn.pdbx_dist_value
Description: Model completeness
Details: Residues ALA A 97 and ASN A 98 are linked now that were not linked in previous PDB.
Provider: author / Type: Coordinate replacement

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Assembly

Deposited unit
A: G-protein coupled receptor 158
B: G-protein coupled receptor 158
hetero molecules


Theoretical massNumber of molelcules
Total (without water)186,64126
Polymers176,5032
Non-polymers10,13824
Water00
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: microscopy
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

#1: Protein G-protein coupled receptor 158


Mass: 88251.633 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: GPR158, KIAA1136 / Production host: Homo sapiens (human) / References: UniProt: Q5T848
#2: Chemical ChemComp-PEE / 1,2-dioleoyl-sn-glycero-3-phosphoethanolamine / DOPE


Mass: 744.034 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C41H78NO8P / Comment: DOPE, phospholipid*YM
#3: Chemical ChemComp-EIJ / (2S)-1-{[(S)-hydroxy{[(1s,2R,3R,4R,5S,6S)-2,3,4,5,6-pentahydroxycyclohexyl]oxy}phosphoryl]oxy}-3-(octadecanoyloxy)propan-2-yl (5E,8E,11E,14E)-icosa-5,8,11,14-tetraenoate


Mass: 887.128 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C47H83O13P / Feature type: SUBJECT OF INVESTIGATION
#4: Chemical...
ChemComp-CLR / CHOLESTEROL


Mass: 386.654 Da / Num. of mol.: 22 / Source method: obtained synthetically / Formula: C27H46O / Feature type: SUBJECT OF INVESTIGATION
Has ligand of interestY

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Experimental details

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Experiment

ExperimentMethod: ELECTRON MICROSCOPY
EM experimentAggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction

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Sample preparation

ComponentName: Receptor / Type: COMPLEX / Entity ID: #1 / Source: RECOMBINANT
Molecular weightValue: 0.170 MDa / Experimental value: NO
Source (natural)Organism: Homo sapiens (human)
Source (recombinant)Organism: Homo sapiens (human)
Buffer solutionpH: 8
SpecimenConc.: 0.3 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
VitrificationInstrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 277 K

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: TFS KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: OTHER
Electron lensMode: OTHER / Nominal defocus max: 2500 nm / Nominal defocus min: 1500 nm
Image recordingElectron dose: 40 e/Å2 / Film or detector model: GATAN K3 (6k x 4k)

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Processing

EM softwareName: cryoSPARC / Version: 3.1 / Category: 3D reconstruction
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
Particle selectionNum. of particles selected: 4374550
SymmetryPoint symmetry: C1 (asymmetric)
3D reconstructionResolution: 3.4 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 263237 / Symmetry type: POINT
Atomic model buildingProtocol: AB INITIO MODEL / Space: REAL

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