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Open data
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Basic information
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Title | Cryo-EM structure of GSK682753A-bound EBI2/GPR183 | ||||||||||||
![]() | GSK682753A-bound EBI2/GPR183 | ||||||||||||
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Function / homology | ![]() regulation of astrocyte chemotaxis / B cell activation involved in immune response / dendritic cell homeostasis / T follicular helper cell differentiation / mature B cell differentiation involved in immune response / Class A/1 (Rhodopsin-like receptors) / T cell chemotaxis / oxysterol binding / leukocyte chemotaxis / dendritic cell chemotaxis ...regulation of astrocyte chemotaxis / B cell activation involved in immune response / dendritic cell homeostasis / T follicular helper cell differentiation / mature B cell differentiation involved in immune response / Class A/1 (Rhodopsin-like receptors) / T cell chemotaxis / oxysterol binding / leukocyte chemotaxis / dendritic cell chemotaxis / plasma membrane => GO:0005886 / humoral immune response / positive regulation of B cell proliferation / osteoclast differentiation / G protein-coupled receptor activity / G alpha (i) signalling events / adaptive immune response / positive regulation of ERK1 and ERK2 cascade / immune response / G protein-coupled receptor signaling pathway / plasma membrane Similarity search - Function | ||||||||||||
Biological species | ![]() | ||||||||||||
Method | single particle reconstruction / cryo EM / Resolution: 2.98 Å | ||||||||||||
![]() | Chen H / Huang W / Li X | ||||||||||||
Funding support | ![]()
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![]() | ![]() 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 |
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Structure visualization
Supplemental images |
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Downloads & links
-EMDB archive
Map data | ![]() | 53.2 MB | ![]() | |
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Header (meta data) | ![]() ![]() | 16.8 KB 16.8 KB | Display Display | ![]() |
Images | ![]() | 70 KB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 7tuyMC ![]() 7tuzC M: atomic model generated by this map C: citing same article ( |
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Similar structure data | Similarity search - Function & homology ![]() |
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Links
EMDB pages | ![]() ![]() |
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Related items in Molecule of the Month |
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Map
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Annotation | GSK682753A-bound EBI2/GPR183 | ||||||||||||||||||||
Voxel size | X=Y=Z: 0.83 Å | ||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||
Details | EMDB XML:
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-Supplemental data
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Sample components
-Entire : complex of GSK682753A-bound EBI2/GPR183-BRIL chimera with anti-BR...
Entire | Name: complex of GSK682753A-bound EBI2/GPR183-BRIL chimera with anti-BRIL Fab and anti-Fab nanobody |
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Components |
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-Supramolecule #1: complex of GSK682753A-bound EBI2/GPR183-BRIL chimera with anti-BR...
Supramolecule | Name: complex of GSK682753A-bound EBI2/GPR183-BRIL chimera with anti-BRIL Fab and anti-Fab nanobody type: complex / Chimera: Yes / ID: 1 / Parent: 0 / Macromolecule list: #1-#3 |
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-Supramolecule #2: anti-BRIL Fab Heavy chain, anti-BRIL Fab Light chain
Supramolecule | Name: anti-BRIL Fab Heavy chain, anti-BRIL Fab Light chain / type: complex / Chimera: Yes / ID: 2 / Parent: 1 / Macromolecule list: #1, #3 |
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Source (natural) | Organism: ![]() |
Recombinant expression | Organism: ![]() ![]() |
-Supramolecule #3: anti-Fab Nanobody
Supramolecule | Name: anti-Fab Nanobody / type: complex / Chimera: Yes / ID: 3 / Parent: 1 / Macromolecule list: #2 |
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Source (natural) | Organism: synthetic construct (others) |
Recombinant expression | Organism: ![]() ![]() |
-Supramolecule #4: G-protein coupled receptor 183,Soluble cytochrome b562 fusion
Supramolecule | Name: G-protein coupled receptor 183,Soluble cytochrome b562 fusion type: complex / Chimera: Yes / ID: 4 / Parent: 1 / Macromolecule list: #4 |
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Source (natural) | Organism: ![]() |
Recombinant expression | Organism: ![]() |
-Macromolecule #1: anti-BRIL Fab Heavy chain
Macromolecule | Name: anti-BRIL Fab Heavy chain / type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 24.321084 KDa |
Recombinant expression | Organism: ![]() ![]() |
Sequence | String: EISEVQLVES GGGLVQPGGS LRLSCAASGF NVVDFSLHWV RQAPGKGLEW VAYISSSSGS TSYADSVKGR FTISADTSKN TAYLQMNSL RAEDTAVYYC ARWGYWPGEP WWKAFDYWGQ GTLVTVSSAS TKGPSVFPLA PSSKSTSGGT AALGCLVKDY F PEPVTVSW ...String: EISEVQLVES GGGLVQPGGS LRLSCAASGF NVVDFSLHWV RQAPGKGLEW VAYISSSSGS TSYADSVKGR FTISADTSKN TAYLQMNSL RAEDTAVYYC ARWGYWPGEP WWKAFDYWGQ GTLVTVSSAS TKGPSVFPLA PSSKSTSGGT AALGCLVKDY F PEPVTVSW NSGALTSGVH TFPAVLQSSG LYSLSSVVTV PSSSLGTQTY ICNVNHKPSN TKVDKKVEPK S |
-Macromolecule #2: anti-Fab Nanobody
Macromolecule | Name: anti-Fab Nanobody / type: protein_or_peptide / ID: 2 / Number of copies: 1 / Enantiomer: LEVO |
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Source (natural) | Organism: synthetic construct (others) |
Molecular weight | Theoretical: 15.071431 KDa |
Recombinant expression | Organism: ![]() ![]() |
Sequence | String: HHHHHHGENL YFQGSQVQLQ ESGGGLVQPG GSLRLSCAAS GRTISRYAMS WFRQAPGKER EFVAVARRSG DGAFYADSVQ GRFTVSRDD AKNTVYLQMN SLKPEDTAVY YCAIDSDTFY SGSYDYWGQG TQVTVSS |
-Macromolecule #3: anti-BRIL Fab Light chain
Macromolecule | Name: anti-BRIL Fab Light chain / type: protein_or_peptide / ID: 3 / Number of copies: 1 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 23.483062 KDa |
Recombinant expression | Organism: ![]() ![]() |
Sequence | String: SDIQMTQSPS SLSASVGDRV TITCRASQSV SSAVAWYQQK PGKAPKLLIY SASSLYSGVP SRFSGSRSGT DFTLTISSLQ PEDFATYYC QQYLYYSLVT FGQGTKVEIK RTVAAPSVFI FPPSDSQLKS GTASVVCLLN NFYPREAKVQ WKVDNALQSG N SQESVTEQ ...String: SDIQMTQSPS SLSASVGDRV TITCRASQSV SSAVAWYQQK PGKAPKLLIY SASSLYSGVP SRFSGSRSGT DFTLTISSLQ PEDFATYYC QQYLYYSLVT FGQGTKVEIK RTVAAPSVFI FPPSDSQLKS GTASVVCLLN NFYPREAKVQ WKVDNALQSG N SQESVTEQ DSKDSTYSLS STLTLSKADY EKHKVYACEV THQGLSSPVT KSFNRGE |
-Macromolecule #4: G-protein coupled receptor 183,Soluble cytochrome b562 fusion
Macromolecule | Name: G-protein coupled receptor 183,Soluble cytochrome b562 fusion type: protein_or_peptide / ID: 4 / Number of copies: 1 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 54.364539 KDa |
Recombinant expression | Organism: ![]() |
Sequence | String: MDIQMANNFT PPSATPQGND CDLYAHHSTA RIVMPLHYSL VFIIGLVGNL LALVVIVQNR KKINSTTLYS TNLVISDILF TTALPTRIA YYAMGFDWRI GDALCRITAL VFYINTYAGV NFMTCLSIDR FIAVVHPLRY NKIKRIEHAK GVCIFVWILV F AQTLPLLI ...String: MDIQMANNFT PPSATPQGND CDLYAHHSTA RIVMPLHYSL VFIIGLVGNL LALVVIVQNR KKINSTTLYS TNLVISDILF TTALPTRIA YYAMGFDWRI GDALCRITAL VFYINTYAGV NFMTCLSIDR FIAVVHPLRY NKIKRIEHAK GVCIFVWILV F AQTLPLLI NPMSKQEAER ITCMEYPNFE ETKSLPWILL GACFIGYVLP LIIILICYSQ ICCKLFRARR QLADLEDNWE TL NDNLKVI EKADNAAQVK DALTKMRAAA LDAQKATPPK LEDKSPDSPE MKDFRHGFDI LVGQIDDALK LANEGKVKEA QAA AEQLKT TRNAYIQKYL ERARSTLSGV NKKALNTIIL IIVVFVLCFT PYHVAIIQHM IKKLRFSNFL ECSQRHSFQI SLHF TVCLM NFNCCMDPFI YFFACKGYKR KVMRMLKRQV SVSISSAVKS APEENSREMT ETQMMIHSKS SNGKDYKDDD DK |
-Macromolecule #5: 8-[(2E)-3-(4-chlorophenyl)prop-2-enoyl]-3-[(3,4-dichlorophenyl)me...
Macromolecule | Name: 8-[(2E)-3-(4-chlorophenyl)prop-2-enoyl]-3-[(3,4-dichlorophenyl)methyl]-1-oxa-3,8-diazaspiro[4.5]decan-2-one type: ligand / ID: 5 / Number of copies: 1 / Formula: KKF |
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Molecular weight | Theoretical: 479.783 Da |
Chemical component information | ![]() ChemComp-KKF: |
-Experimental details
-Structure determination
Method | cryo EM |
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![]() | single particle reconstruction |
Aggregation state | particle |
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Sample preparation
Buffer | pH: 7.5 |
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Grid | Model: C-flat-1.2/1.3 / Material: GOLD / Mesh: 400 / Support film - Material: CARBON / Support film - topology: HOLEY |
Vitrification | Cryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 293 K |
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Electron microscopy
Microscope | FEI TITAN |
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Image recording | Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Average electron dose: 60.0 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: ![]() |
Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: DIFFRACTION / Nominal defocus max: 2.5 µm / Nominal defocus min: 1.2 µm |
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Image processing
Startup model | Type of model: EMDB MAP EMDB ID: |
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Final reconstruction | Resolution.type: BY AUTHOR / Resolution: 2.98 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 222283 |
Initial angle assignment | Type: PROJECTION MATCHING |
Final angle assignment | Type: ANGULAR RECONSTITUTION |