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- PDB-7tuz: Cryo-EM structure of 7alpha,25-dihydroxycholesterol-bound EBI2/GP... -

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Basic information

Entry
Database: PDB / ID: 7tuz
TitleCryo-EM structure of 7alpha,25-dihydroxycholesterol-bound EBI2/GPR183 in complex with Gi protein
Components
  • (Guanine nucleotide-binding protein ...) x 3
  • G-protein coupled receptor 183
  • scFv16
KeywordsIMMUNE SYSTEM / EBI2 / GPR183 / oxysterol / GPCR / signaling / immunity / immunocyte migration
Function / homology
Function and homology information


regulation of astrocyte chemotaxis / B cell activation involved in immune response / dendritic cell homeostasis / mature B cell differentiation involved in immune response / T follicular helper cell differentiation / oxysterol binding / T cell chemotaxis / Class A/1 (Rhodopsin-like receptors) / leukocyte chemotaxis / dendritic cell chemotaxis ...regulation of astrocyte chemotaxis / B cell activation involved in immune response / dendritic cell homeostasis / mature B cell differentiation involved in immune response / T follicular helper cell differentiation / oxysterol binding / T cell chemotaxis / Class A/1 (Rhodopsin-like receptors) / leukocyte chemotaxis / dendritic cell chemotaxis / humoral immune response / adenylate cyclase inhibitor activity / positive regulation of protein localization to cell cortex / T cell migration / Adenylate cyclase inhibitory pathway / D2 dopamine receptor binding / response to prostaglandin E / adenylate cyclase regulator activity / G protein-coupled serotonin receptor binding / adenylate cyclase-inhibiting serotonin receptor signaling pathway / positive regulation of B cell proliferation / cellular response to forskolin / regulation of mitotic spindle organization / osteoclast differentiation / Regulation of insulin secretion / positive regulation of cholesterol biosynthetic process / negative regulation of insulin secretion / G protein-coupled receptor binding / G protein-coupled receptor activity / adenylate cyclase-inhibiting G protein-coupled receptor signaling pathway / response to peptide hormone / adenylate cyclase-modulating G protein-coupled receptor signaling pathway / G-protein beta/gamma-subunit complex binding / centriolar satellite / Olfactory Signaling Pathway / Activation of the phototransduction cascade / G beta:gamma signalling through PLC beta / Presynaptic function of Kainate receptors / Thromboxane signalling through TP receptor / G protein-coupled acetylcholine receptor signaling pathway / G-protein activation / Activation of G protein gated Potassium channels / Inhibition of voltage gated Ca2+ channels via Gbeta/gamma subunits / Prostacyclin signalling through prostacyclin receptor / G beta:gamma signalling through CDC42 / Glucagon signaling in metabolic regulation / G beta:gamma signalling through BTK / Synthesis, secretion, and inactivation of Glucagon-like Peptide-1 (GLP-1) / ADP signalling through P2Y purinoceptor 12 / photoreceptor disc membrane / Sensory perception of sweet, bitter, and umami (glutamate) taste / Glucagon-type ligand receptors / Adrenaline,noradrenaline inhibits insulin secretion / Vasopressin regulates renal water homeostasis via Aquaporins / GDP binding / Glucagon-like Peptide-1 (GLP1) regulates insulin secretion / G alpha (z) signalling events / cellular response to catecholamine stimulus / ADP signalling through P2Y purinoceptor 1 / ADORA2B mediated anti-inflammatory cytokines production / G beta:gamma signalling through PI3Kgamma / Cooperation of PDCL (PhLP1) and TRiC/CCT in G-protein beta folding / adenylate cyclase-activating dopamine receptor signaling pathway / GPER1 signaling / Inactivation, recovery and regulation of the phototransduction cascade / cellular response to prostaglandin E stimulus / G-protein beta-subunit binding / heterotrimeric G-protein complex / G alpha (12/13) signalling events / sensory perception of taste / extracellular vesicle / signaling receptor complex adaptor activity / Thrombin signalling through proteinase activated receptors (PARs) / retina development in camera-type eye / G protein activity / GTPase binding / Ca2+ pathway / midbody / fibroblast proliferation / High laminar flow shear stress activates signaling by PIEZO1 and PECAM1:CDH5:KDR in endothelial cells / cell cortex / G alpha (i) signalling events / G alpha (s) signalling events / phospholipase C-activating G protein-coupled receptor signaling pathway / G alpha (q) signalling events / Hydrolases; Acting on acid anhydrides; Acting on GTP to facilitate cellular and subcellular movement / adaptive immune response / Ras protein signal transduction / Extra-nuclear estrogen signaling / cell population proliferation / positive regulation of ERK1 and ERK2 cascade / immune response / ciliary basal body / G protein-coupled receptor signaling pathway / lysosomal membrane / cell division / GTPase activity / synapse / centrosome / GTP binding
Similarity search - Function
: / G-protein alpha subunit, group I / YVTN repeat-like/Quinoprotein amine dehydrogenase / Serpentine type 7TM GPCR chemoreceptor Srsx / 7 Propeller / Methylamine Dehydrogenase; Chain H / Guanine nucleotide binding protein (G-protein), alpha subunit / G protein alpha subunit, helical insertion / G-protein alpha subunit / G-alpha domain profile. ...: / G-protein alpha subunit, group I / YVTN repeat-like/Quinoprotein amine dehydrogenase / Serpentine type 7TM GPCR chemoreceptor Srsx / 7 Propeller / Methylamine Dehydrogenase; Chain H / Guanine nucleotide binding protein (G-protein), alpha subunit / G protein alpha subunit, helical insertion / G-protein alpha subunit / G-alpha domain profile. / G protein alpha subunit / G-protein, gamma subunit / G-protein gamma subunit domain profile. / G-protein gamma-like domain / G-protein gamma-like domain superfamily / GGL domain / G protein gamma subunit-like motifs / GGL domain / G protein beta WD-40 repeat protein / Guanine nucleotide-binding protein, beta subunit / G-protein, beta subunit / G-protein coupled receptors family 1 signature. / G protein-coupled receptor, rhodopsin-like / GPCR, rhodopsin-like, 7TM / G-protein coupled receptors family 1 profile. / 7 transmembrane receptor (rhodopsin family) / G-protein beta WD-40 repeat / WD40 repeat, conserved site / Trp-Asp (WD) repeats signature. / Trp-Asp (WD) repeats profile. / Trp-Asp (WD) repeats circular profile. / WD40 repeats / WD40 repeat / WD40-repeat-containing domain superfamily / WD40/YVTN repeat-like-containing domain superfamily / Immunoglobulins / Immunoglobulin-like / Sandwich / P-loop containing nucleoside triphosphate hydrolase / Mainly Beta
Similarity search - Domain/homology
Chem-KJX / G-protein coupled receptor 183 / Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2 / Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1 / Guanine nucleotide-binding protein G(i) subunit alpha-1
Similarity search - Component
Biological speciesHomo sapiens (human)
Mus musculus (house mouse)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.12 Å
AuthorsChen, H. / Hung, W. / Li, X.
Funding support United States, 3items
OrganizationGrant numberCountry
National Institutes of Health/National Heart, Lung, and Blood Institute (NIH/NHLBI)P01HL020948 United States
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)R01GM135343 United States
Damon Runyon Cancer Research FoundationDRR-53S-19 United States
CitationJournal: Structure / Year: 2022
Title: Structures of oxysterol sensor EBI2/GPR183, a key regulator of the immune response.
Authors: Hongwen Chen / Weijiao Huang / Xiaochun Li /
Abstract: Oxysterols induce the migration of B-lymphocytes and dendritic cells to interfollicular regions of lymphoid tissues through binding the EBI2 (GPR183) to stimulate effective adaptive immunity and ...Oxysterols induce the migration of B-lymphocytes and dendritic cells to interfollicular regions of lymphoid tissues through binding the EBI2 (GPR183) to stimulate effective adaptive immunity and antibody production during infection. Aberrant EBI2 signaling is implicated in inflammatory bowel disease, sclerosis, and infectious disease. Here, we report the cryo-EM structures of an EBI2-G signaling complex with its endogenous agonist 7α,25-OHC and that of an inactive EBI2 bound to the inverse agonist GSK682753A. These structures reveal an agonist binding site for the oxysterol and a potential ligand entrance site exposed to the lipid bilayer. Mutations within the oxysterol binding site and the Gα interface attenuate G protein signaling and abolish oxysterol-mediated cell migration indicating that G protein signaling directly involves in the oxysterol-EBI2 pathway. Together, these findings provide new insight into how EBI2 is activated by an oxysterol ligand and will facilitate the development of therapeutic approaches that target EBI2-linked diseases.
History
DepositionFeb 3, 2022Deposition site: RCSB / Processing site: RCSB
Revision 1.0Apr 13, 2022Provider: repository / Type: Initial release
Revision 1.0Apr 13, 2022Data content type: EM metadata / Data content type: EM metadata / Provider: repository / Type: Initial release
Revision 1.0Apr 13, 2022Data content type: Image / Data content type: Image / Provider: repository / Type: Initial release
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Revision 1.0Apr 13, 2022Data content type: Image / Data content type: Image / Provider: repository / Type: Initial release
Revision 1.0Apr 13, 2022Data content type: Primary map / Data content type: Primary map / Provider: repository / Type: Initial release
Revision 1.0Apr 13, 2022Data content type: Image / Data content type: Image / Provider: repository / Type: Initial release
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Revision 1.1May 25, 2022Group: Database references / Category: citation / citation_author
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Revision 1.2Jul 20, 2022Group: Database references / Category: citation / Item: _citation.journal_volume / _citation.page_first
Revision 1.3Oct 30, 2024Group: Data collection / Structure summary
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Revision 1.4May 14, 2025Group: Data collection / Category: em_admin / em_software / Item: _em_admin.last_update / _em_software.name
Revision 1.1May 14, 2025Data content type: EM metadata / Data content type: EM metadata / EM metadata / Group: Data processing / Experimental summary / Data content type: EM metadata / EM metadata / Category: em_admin / em_software / Data content type: EM metadata / EM metadata / Item: _em_admin.last_update / _em_software.name

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
R: G-protein coupled receptor 183
A: Guanine nucleotide-binding protein G(i) subunit alpha-1
B: Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1
C: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2
E: scFv16
hetero molecules


Theoretical massNumber of molelcules
Total (without water)160,2976
Polymers159,8785
Non-polymers4191
Water00
1


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

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Components

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Guanine nucleotide-binding protein ... , 3 types, 3 molecules ABC

#2: Protein Guanine nucleotide-binding protein G(i) subunit alpha-1 / Adenylate cyclase-inhibiting G alpha protein


Mass: 40398.047 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: GNAI1 / Production host: Spodoptera frugiperda (fall armyworm) / References: UniProt: P63096
#3: Protein Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1 / Transducin beta chain 1


Mass: 39141.793 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: GNB1 / Production host: Spodoptera frugiperda (fall armyworm) / References: UniProt: P62873
#4: Protein Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2 / G gamma-I


Mass: 7861.143 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: GNG2 / Production host: Spodoptera frugiperda (fall armyworm) / References: UniProt: P59768

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Protein / Antibody / Non-polymers , 3 types, 3 molecules RE

#1: Protein G-protein coupled receptor 183 / Epstein-Barr virus-induced G-protein coupled receptor 2 / EBI2 / EBV-induced G-protein coupled ...Epstein-Barr virus-induced G-protein coupled receptor 2 / EBI2 / EBV-induced G-protein coupled receptor 2 / hEBI2


Mass: 43840.520 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: GPR183, EBI2 / Cell line (production host): HEK293 GnTI- / Production host: Homo sapiens (human) / References: UniProt: P32249
#5: Antibody scFv16


Mass: 28636.793 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Mus musculus (house mouse) / Production host: Spodoptera frugiperda (fall armyworm)
#6: Chemical ChemComp-KJX / (2S,4aS,4bS,7R,8S,8aS,9R,10aR)-7-[(2R,3R)-7-hydroxy-3,7-dimethyloctan-2-yl]-4a,7,8-trimethyltetradecahydrophenanthrene-2,9-diol


Mass: 418.652 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C27H46O3 / Feature type: SUBJECT OF INVESTIGATION

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Details

Has ligand of interestY
Has protein modificationY

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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

Component
IDNameTypeEntity IDParent-IDSource
1Complex of 7alpha,25-dihydroxycholesterol-bound EBI2/GPR183 with Gi proteinCOMPLEX#1-#50RECOMBINANT
2G-protein coupled receptor 183COMPLEX#11RECOMBINANT
3Guanine nucleotide-binding protein G(i) subunit alpha-1, Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1, Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2COMPLEX#2-#41RECOMBINANT
4scFv16COMPLEX#51RECOMBINANT
Molecular weightValue: 0.140 MDa / Experimental value: NO
Source (natural)
IDEntity assembly-IDOrganismNcbi tax-ID
12Homo sapiens (human)9606
23Homo sapiens (human)9606
34Mus musculus (house mouse)10090
Source (recombinant)
IDEntity assembly-IDOrganismNcbi tax-ID
12Homo sapiens (human)9606
23Spodoptera frugiperda (fall armyworm)7108
34Spodoptera frugiperda (fall armyworm)7108
Buffer solutionpH: 7.5
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
Specimen supportGrid material: GOLD / Grid mesh size: 400 divisions/in. / Grid type: C-flat-1.2/1.3
VitrificationCryogen name: ETHANE

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Electron microscopy imaging

MicroscopyModel: FEI TITAN
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: DIFFRACTION / Nominal defocus max: 2500 nm / Nominal defocus min: 1200 nm
Image recordingElectron dose: 60 e/Å2 / Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k)

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Processing

SoftwareName: PHENIX / Version: 1.16_3549: / Classification: refinement
EM software
IDNameVersionCategory
2SerialEM3.8image acquisition
8PHENIXmodel refinement
CTF correctionType: NONE
3D reconstructionResolution: 3.12 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 496394 / Symmetry type: POINT
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.0069095
ELECTRON MICROSCOPYf_angle_d0.68412330
ELECTRON MICROSCOPYf_dihedral_angle_d6.4625387
ELECTRON MICROSCOPYf_chiral_restr0.0471414
ELECTRON MICROSCOPYf_plane_restr0.0051553

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