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- EMDB-43277: cryoEM structure of human ACKR3 phosphorylated by GRK5 in complex... -
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Basic information
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Title | cryoEM structure of human ACKR3 phosphorylated by GRK5 in complex with Arrestin3 variant with the C edge loop from Arrestin2 inserted | |||||||||||||||||||||||||||||||||||||||
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![]() | GPCR / arrestin / signaling / SIGNALING PROTEIN-IMMUNE SYSTEM complex | |||||||||||||||||||||||||||||||||||||||
Function / homology | ![]() oculomotor nerve development / positive regulation of mesenchymal stem cell migration / C-X-C chemokine binding / angiotensin receptor binding / C-X-C chemokine receptor activity / desensitization of G protein-coupled receptor signaling pathway / C-C chemokine receptor activity / negative regulation of intrinsic apoptotic signaling pathway in response to DNA damage / chemokine-mediated signaling pathway / C-C chemokine binding ...oculomotor nerve development / positive regulation of mesenchymal stem cell migration / C-X-C chemokine binding / angiotensin receptor binding / C-X-C chemokine receptor activity / desensitization of G protein-coupled receptor signaling pathway / C-C chemokine receptor activity / negative regulation of intrinsic apoptotic signaling pathway in response to DNA damage / chemokine-mediated signaling pathway / C-C chemokine binding / G protein-coupled receptor internalization / inositol hexakisphosphate binding / Chemokine receptors bind chemokines / scavenger receptor activity / phosphatidylinositol-3,4,5-trisphosphate binding / positive regulation of receptor internalization / endocytic vesicle / vasculogenesis / coreceptor activity / clathrin-coated pit / phosphatidylinositol binding / cell chemotaxis / calcium-mediated signaling / recycling endosome / receptor internalization / protein transport / positive regulation of cytosolic calcium ion concentration / G alpha (i) signalling events / angiogenesis / early endosome / positive regulation of ERK1 and ERK2 cascade / endosome / cell adhesion / immune response / external side of plasma membrane / negative regulation of cell population proliferation / intracellular membrane-bounded organelle / cell surface / signal transduction / nucleus / plasma membrane / cytoplasm Similarity search - Function | |||||||||||||||||||||||||||||||||||||||
Biological species | ![]() ![]() ![]() | |||||||||||||||||||||||||||||||||||||||
Method | single particle reconstruction / cryo EM / Resolution: 3.3 Å | |||||||||||||||||||||||||||||||||||||||
![]() | Chen Q / Tesmer JJG | |||||||||||||||||||||||||||||||||||||||
Funding support | ![]()
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![]() | ![]() Title: Effect of phosphorylation barcodes on arrestin binding to a chemokine receptor. Authors: Qiuyan Chen / Christopher T Schafer / Somnath Mukherjee / Kai Wang / Martin Gustavsson / James R Fuller / Katelyn Tepper / Thomas D Lamme / Yasmin Aydin / Parth Agrawal / Genki Terashi / Xin- ...Authors: Qiuyan Chen / Christopher T Schafer / Somnath Mukherjee / Kai Wang / Martin Gustavsson / James R Fuller / Katelyn Tepper / Thomas D Lamme / Yasmin Aydin / Parth Agrawal / Genki Terashi / Xin-Qiu Yao / Daisuke Kihara / Anthony A Kossiakoff / Tracy M Handel / John J G Tesmer / ![]() ![]() ![]() Abstract: Unique phosphorylation 'barcodes' installed in different regions of an active seven-transmembrane receptor by different G-protein-coupled receptor (GPCR) kinases (GRKs) have been proposed to promote ...Unique phosphorylation 'barcodes' installed in different regions of an active seven-transmembrane receptor by different G-protein-coupled receptor (GPCR) kinases (GRKs) have been proposed to promote distinct cellular outcomes, but it is unclear whether or how arrestins differentially engage these barcodes. Here, to address this, we developed an antigen-binding fragment (Fab7) that recognizes both active arrestin2 (β-arrestin1) and arrestin3 (β-arrestin2) without interacting with bound receptor polypeptides. We used Fab7 to determine the structures of both arrestins in complex with atypical chemokine receptor 3 (ACKR3) phosphorylated in different regions of its C-terminal tail by either GRK2 or GRK5 (ref. ). The GRK2-phosphorylated ACKR3 resulted in more heterogeneous 'tail-mode' assemblies, whereas phosphorylation by GRK5 resulted in more rigid 'ACKR3-adjacent' assemblies. Unexpectedly, the finger loops of both arrestins engaged the micelle surface rather than the receptor intracellular pocket, with arrestin3 being more dynamic, partly because of its lack of a membrane-anchoring motif. Thus, both the region of the barcode and the arrestin isoform involved can alter the structure and dynamics of GPCR-arrestin complexes, providing a possible mechanistic basis for unique downstream cellular effects, such as the efficiency of chemokine scavenging and the robustness of arrestin binding in ACKR3. | |||||||||||||||||||||||||||||||||||||||
History |
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Structure visualization
Supplemental images |
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Downloads & links
-EMDB archive
Map data | ![]() | 118 MB | ![]() | |
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Header (meta data) | ![]() ![]() | 27.6 KB 27.6 KB | Display Display | ![]() |
FSC (resolution estimation) | ![]() | 11.9 KB | Display | ![]() |
Images | ![]() | 50.2 KB | ||
Filedesc metadata | ![]() | 7.2 KB | ||
Others | ![]() ![]() | 115.9 MB 115.9 MB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 8vj9MC ![]() 8tiiC ![]() 8tilC ![]() 8tinC ![]() 8tioC ![]() 41287 ![]() 41288 ![]() 41293 ![]() 41294 C: citing same article ( M: atomic model generated by this map |
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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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Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 1.054 Å | ||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
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-Supplemental data
-Half map: #1
File | emd_43277_half_map_1.map | ||||||||||||
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Projections & Slices |
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Density Histograms |
-Half map: #2
File | emd_43277_half_map_2.map | ||||||||||||
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Projections & Slices |
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Density Histograms |
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Sample components
-Entire : human ACKR3 phosphorylated by GRK5 in complex with Arrestin3
Entire | Name: human ACKR3 phosphorylated by GRK5 in complex with Arrestin3 |
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Components |
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-Supramolecule #1: human ACKR3 phosphorylated by GRK5 in complex with Arrestin3
Supramolecule | Name: human ACKR3 phosphorylated by GRK5 in complex with Arrestin3 type: complex / ID: 1 / Parent: 0 / Macromolecule list: all |
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Source (natural) | Organism: ![]() ![]() |
-Macromolecule #1: Fab7 heavy chain
Macromolecule | Name: Fab7 heavy chain / type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO |
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Source (natural) | Organism: synthetic construct (others) |
Molecular weight | Theoretical: 25.720758 KDa |
Recombinant expression | Organism: ![]() ![]() |
Sequence | String: EISEVQLVES GGGLVQPGGS LRLSCAASGF NVSSSYIHWV RQAPGKGLEW VASISSYYGY TYYADSVKGR FTISADTSKN TAYLQMNSL RAEDTAVYYC ARKSMYHRGW GWLSWVYGAM DYWGQGTLVT VSSASTKGPS VFPLAPSSKS TSGGTAALGC L VKDYFPEP ...String: EISEVQLVES GGGLVQPGGS LRLSCAASGF NVSSSYIHWV RQAPGKGLEW VASISSYYGY TYYADSVKGR FTISADTSKN TAYLQMNSL RAEDTAVYYC ARKSMYHRGW GWLSWVYGAM DYWGQGTLVT VSSASTKGPS VFPLAPSSKS TSGGTAALGC L VKDYFPEP VTVSWNSGAL TSGVHTFPAV LQSSGLYSLS SVVTVPSSSL GTQTYICNVN HKPSNTKVDK KVEPKSCDKT HT |
-Macromolecule #2: Fab7 light chain
Macromolecule | Name: Fab7 light chain / 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: 23.471031 KDa |
Recombinant expression | Organism: ![]() ![]() |
Sequence | String: SDIQMTQSPS SLSASVGDRV TITCRASQSV SSAVAWYQQK PGKAPKLLIY SASSLYSGVP SRFSGSRSGT DFTLTISSLQ PEDFATYYC QQSYYYPITF GQGTKVEIKR TVAAPSVFIF PPSDSQLKSG TASVVCLLNN FYPREAKVQW KVDNALQSGN S QESVTEQD ...String: SDIQMTQSPS SLSASVGDRV TITCRASQSV SSAVAWYQQK PGKAPKLLIY SASSLYSGVP SRFSGSRSGT DFTLTISSLQ PEDFATYYC QQSYYYPITF GQGTKVEIKR TVAAPSVFIF PPSDSQLKSG TASVVCLLNN FYPREAKVQW KVDNALQSGN S QESVTEQD SKDSTYSLSS TLTLSKADYE KHKVYACEVT HQGLSSPVTK SFNRGEC |
-Macromolecule #3: Atypical chemokine receptor 3
Macromolecule | Name: Atypical chemokine receptor 3 / type: protein_or_peptide / ID: 3 / Number of copies: 1 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 45.356367 KDa |
Recombinant expression | Organism: ![]() ![]() |
Sequence | String: GAPDLHLFDY SEPGNFSDIS WPCNSSDCIV VDTVMCPNMP NKSVLLYTLS FIYIFIFVIG MIANSVVVWV NIQAKTTGYD THCYILNLA IADLWVVLTI PVWVVSLVQH NQWPMGELTC KVTHLIFSIN LFGSIFFLTC MSVDRYLSIT YFTNTPSSRK K MVRRVVCI ...String: GAPDLHLFDY SEPGNFSDIS WPCNSSDCIV VDTVMCPNMP NKSVLLYTLS FIYIFIFVIG MIANSVVVWV NIQAKTTGYD THCYILNLA IADLWVVLTI PVWVVSLVQH NQWPMGELTC KVTHLIFSIN LFGSIFFLTC MSVDRYLSIT YFTNTPSSRK K MVRRVVCI LVWLLAFCVS LPDTYYLKTV TSASNNETYC RSFYPEHSIK EWLIGMELVS VVLGFAVPFS IIAVFYFLLA RA ISASSDQ EKHSSRKIIF SYVVVFLVCW LPYHVAVLLD IFSILHYIPF TCRLEHALFT ALHVTQCLSL VHCCVNPVLY SFI NRNYRY ELMKAFIFKY SAK(TPO)GL(TPO)KLI DASRVSETEY SALEQSTKGR PLEVLFQGPH HHHHHHHHHD YKDDDD K UniProtKB: Atypical chemokine receptor 3 |
-Macromolecule #4: Beta-arrestin-2
Macromolecule | Name: Beta-arrestin-2 / type: protein_or_peptide / ID: 4 / Number of copies: 1 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() ![]() |
Molecular weight | Theoretical: 44.863176 KDa |
Recombinant expression | Organism: ![]() ![]() |
Sequence | String: MGEKPGTRVF KKSSPNCKLT VYLGKRDFVD HLDKVDPVDG VVLVDPDYLK DRKVFVTLTC AFRYGREDLD VLGLSFRKDL FIANYQAFP PTPNPPRPPT RLQERLLRKL GQHAHPFFFT IPQNLPCSVT LQPGPEDTGK ACGVDFEIRA FCAKSLEEKS H KRNSVRLV ...String: MGEKPGTRVF KKSSPNCKLT VYLGKRDFVD HLDKVDPVDG VVLVDPDYLK DRKVFVTLTC AFRYGREDLD VLGLSFRKDL FIANYQAFP PTPNPPRPPT RLQERLLRKL GQHAHPFFFT IPQNLPCSVT LQPGPEDTGK ACGVDFEIRA FCAKSLEEKS H KRNSVRLV IRKVQFAPEK PGPQPSAETT RHFLMSDRSL HLEASLDKEL YYHGEPLNVN VHVTNNSTKT VKKIKVSVRQ YA DICLFST AQYKCPVAQV EQDDQVSPSS TFCKVYTITP LLSNNREKRG LALDGKLKHE DTNLASSTIV KEGANKEVLG ILV SYRVKV KLVVSRGGLL GDLASSDVSV ELPFVLMHPK PHDHIALPRP QSAVPETDAP VDTNLIEFET NYATDDDIVF EDFA UniProtKB: Beta-arrestin-2 |
-Experimental details
-Structure determination
Method | cryo EM |
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![]() | single particle reconstruction |
Aggregation state | particle |
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Sample preparation
Concentration | 0.7 mg/mL |
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Buffer | pH: 8 |
Vitrification | Cryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 277 K / Instrument: FEI VITROBOT MARK IV |
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Electron microscopy
Microscope | FEI TITAN KRIOS |
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Image recording | Film or detector model: GATAN K3 (6k x 4k) / Average electron dose: 56.0 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: ![]() |
Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 2.5 µm / Nominal defocus min: 0.6 µm |
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |