+ Open data
Open data
- Basic information
Basic information
| Entry |  | |||||||||
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| Title | Structure of CXCR2 bound to CXCL5 (CXCR2-CXCL5-Go Full map) | |||||||||
|  Map data | ||||||||||
|  Sample | 
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|  Keywords | GPCR / Arrestin / SIGNALING PROTEIN-IMMUNE SYSTEM complex | |||||||||
| Function / homology |  Function and homology information interleukin-8-mediated signaling pathway / interleukin-8 receptor activity / mast cell granule / interleukin-8 binding / CXCR chemokine receptor binding / C-X-C chemokine receptor activity / neutrophil activation / mu-type opioid receptor binding / corticotropin-releasing hormone receptor 1 binding / C-C chemokine receptor activity ...interleukin-8-mediated signaling pathway / interleukin-8 receptor activity / mast cell granule / interleukin-8 binding / CXCR chemokine receptor binding / C-X-C chemokine receptor activity / neutrophil activation / mu-type opioid receptor binding / corticotropin-releasing hormone receptor 1 binding / C-C chemokine receptor activity / C-C chemokine binding / vesicle docking involved in exocytosis / chemokine activity / Chemokine receptors bind chemokines / dendritic cell chemotaxis / G protein-coupled dopamine receptor signaling pathway / regulation of heart contraction / parallel fiber to Purkinje cell synapse / cellular defense response / postsynaptic modulation of chemical synaptic transmission / adenylate cyclase regulator activity / G protein-coupled serotonin receptor binding / adenylate cyclase-inhibiting serotonin receptor signaling pathway / neutrophil chemotaxis / muscle contraction / secretory granule membrane / locomotory behavior / calcium-mediated signaling / negative regulation of insulin secretion / G protein-coupled receptor activity / GABA-ergic synapse / receptor internalization / adenylate cyclase-modulating G protein-coupled receptor signaling pathway / G-protein beta/gamma-subunit complex binding / 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 / Activation of G protein gated Potassium channels / Inhibition  of voltage gated Ca2+ channels via Gbeta/gamma subunits / G-protein activation / chemotaxis / 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 / antimicrobial humoral immune response mediated by antimicrobial peptide / 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 / mitotic spindle / 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 / adenylate cyclase-activating dopamine receptor signaling pathway / Cooperation of PDCL (PhLP1) and TRiC/CCT in G-protein beta folding / 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 / cell-cell signaling / 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 / cellular response to lipopolysaccharide / microtubule cytoskeleton / presynaptic membrane / positive regulation of cytosolic calcium ion concentration / cell body / GTPase binding / Ca2+ pathway / fibroblast proliferation / High laminar flow shear stress activates signaling by PIEZO1 and PECAM1:CDH5:KDR in endothelial cells / 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 / Ras protein signal transduction / postsynaptic membrane / Extra-nuclear estrogen signaling / cell surface receptor signaling pathway / cell population proliferation / immune response / G protein-coupled receptor signaling pathway / inflammatory response Similarity search - Function | |||||||||
| Biological species |  Homo sapiens (human) | |||||||||
| Method | single particle reconstruction / cryo EM / Resolution: 3.32 Å | |||||||||
|  Authors | Sano FK / Saha S / Sharma S / Ganguly M / Shihoya W / Nureki O / Shukla AK / Banerjee R | |||||||||
| Funding support |  India, 1 items 
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|  Citation |  Journal: Mol Cell / Year: 2025 Title: Molecular basis of promiscuous chemokine binding and structural mimicry at the C-X-C chemokine receptor, CXCR2. Authors: Shirsha Saha / Fumiya K Sano / Saloni Sharma / Manisankar Ganguly / Sudha Mishra / Annu Dalal / Hiroaki Akasaka / Takaaki A Kobayashi / Nashrah Zaidi / Divyanshu Tiwari / Nabarun Roy / ...Authors: Shirsha Saha / Fumiya K Sano / Saloni Sharma / Manisankar Ganguly / Sudha Mishra / Annu Dalal / Hiroaki Akasaka / Takaaki A Kobayashi / Nashrah Zaidi / Divyanshu Tiwari / Nabarun Roy / Manish K Yadav / Nilanjana Banerjee / Sayantan Saha / Samanwita Mohapatra / Yuzuru Itoh / Andy Chevigné / Ramanuj Banerjee / Wataru Shihoya / Osamu Nureki / Arun K Shukla /    Abstract: Selectivity of natural agonists for their cognate receptors is a hallmark of G-protein-coupled receptors (GPCRs); however, this selectivity often breaks down at the chemokine receptors. Chemokines ...Selectivity of natural agonists for their cognate receptors is a hallmark of G-protein-coupled receptors (GPCRs); however, this selectivity often breaks down at the chemokine receptors. Chemokines often display promiscuous binding to chemokine receptors, but the underlying molecular determinants remain mostly elusive. Here, we perform a comprehensive transducer-coupling analysis, testing all known C-X-C chemokines on every C-X-C type chemokine receptor to generate a global fingerprint of the selectivity and promiscuity encoded within this system. Taking lead from this, we determine cryoelectron microscopy (cryo-EM) structures of the most promiscuous receptor, C-X-C chemokine receptor 2 (CXCR2), in complex with several chemokines. These structural snapshots elucidate the details of ligand-receptor interactions, including structural motifs, which are validated using mutagenesis and functional experiments. We also observe that most chemokines position themselves on CXCR2 as a dimer while CXCL6 exhibits a monomeric binding pose. Taken together, our findings provide the molecular basis of chemokine promiscuity at CXCR2 with potential implications for developing therapeutic molecules. | |||||||||
| History | 
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- Structure visualization
Structure visualization
| Supplemental images | 
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- Downloads & links
Downloads & links
-EMDB archive
| Map data |  emd_38748.map.gz | 294.4 MB |  EMDB map data format | |
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| Header (meta data) |  emd-38748-v30.xml  emd-38748.xml | 22.8 KB 22.8 KB | Display Display |  EMDB header | 
| FSC (resolution estimation) |  emd_38748_fsc.xml | 14.5 KB | Display |  FSC data file | 
| Images |  emd_38748.png | 49.2 KB | ||
| Filedesc metadata |  emd-38748.cif.gz | 7.1 KB | ||
| Others |  emd_38748_half_map_1.map.gz  emd_38748_half_map_2.map.gz | 301.6 MB 301.6 MB | ||
| Archive directory |  http://ftp.pdbj.org/pub/emdb/structures/EMD-38748  ftp://ftp.pdbj.org/pub/emdb/structures/EMD-38748 | HTTPS FTP | 
-Validation report
| Summary document |  emd_38748_validation.pdf.gz | 863.9 KB | Display |  EMDB validaton report | 
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| Full document |  emd_38748_full_validation.pdf.gz | 863.4 KB | Display | |
| Data in XML |  emd_38748_validation.xml.gz | 24.1 KB | Display | |
| Data in CIF |  emd_38748_validation.cif.gz | 31.7 KB | Display | |
| Arichive directory |  https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-38748  ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-38748 | HTTPS FTP | 
-Related structure data
| Related structure data |  8xx7MC  8xvuC  8xwaC  8xwfC  8xwmC  8xwnC  8xwsC  8xwvC  8xx3C  8xx6C  8xxhC  8xxrC  8xxxC M: atomic model generated by this map C: citing same article ( | 
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| Similar structure data | Similarity search - Function & homology  F&H Search | 
- Links
Links
| EMDB pages |  EMDB (EBI/PDBe) /  EMDataResource | 
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| Related items in Molecule of the Month | 
- Map
Map
| File |  Download / File: emd_38748.map.gz / Format: CCP4 / Size: 325 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||
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| Projections & slices | Image control
 
 Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||
| Voxel size | X=Y=Z: 1.0564 Å | ||||||||||||||||||||||||||||||||||||
| Density | 
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| Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||
| Details | EMDB XML: 
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-Supplemental data
-Half map: #1
| File | emd_38748_half_map_1.map | ||||||||||||
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| Projections & Slices | 
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| Density Histograms | 
-Half map: #2
| File | emd_38748_half_map_2.map | ||||||||||||
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| Projections & Slices | 
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| Density Histograms | 
- Sample components
Sample components
-Entire : C-X-C chemokine receptor type 2 in complex with C-X-C motif chemo...
| Entire | Name: C-X-C chemokine receptor type 2 in complex with C-X-C motif chemokine 5 and Go | 
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| Components | 
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-Supramolecule #1: C-X-C chemokine receptor type 2 in complex with C-X-C motif chemo...
| Supramolecule | Name: C-X-C chemokine receptor type 2 in complex with C-X-C motif chemokine 5 and Go type: complex / ID: 1 / Parent: 0 / Macromolecule list: all | 
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| Source (natural) | Organism:  Homo sapiens (human) | 
-Macromolecule #1: C-X-C motif chemokine 5
| Macromolecule | Name: C-X-C motif chemokine 5 / type: protein_or_peptide / ID: 1 / Number of copies: 2 / Enantiomer: LEVO | 
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| Source (natural) | Organism:  Homo sapiens (human) | 
| Molecular weight | Theoretical: 8.367868 KDa | 
| Recombinant expression | Organism:   Escherichia coli (E. coli) | 
| Sequence | String: AGPAAAVLRE LRCVCLQTTQ GVHPKMISNL QVFAIGPQCS KVEVVASLKN GKEICLDPEA PFLKKVIQKI LDGGNKEN UniProtKB: C-X-C motif chemokine 5 | 
-Macromolecule #2: C-X-C chemokine receptor type 2
| Macromolecule | Name: C-X-C chemokine receptor type 2 / type: protein_or_peptide / ID: 2 / Number of copies: 2 / Enantiomer: LEVO | 
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| Source (natural) | Organism:  Homo sapiens (human) | 
| Molecular weight | Theoretical: 46.699609 KDa | 
| Recombinant expression | Organism:   Spodoptera frugiperda (fall armyworm) | 
| Sequence | String: MGKTIIALSY IFCLVFADYK DDDDAANFTP VNGSSGNQSV RLVTSSSLEV LFQGPGSEDF NMESDSFEDF WKGEDLSNYS  YSSTLPPFL LDAAPCEPES LEINKYFVVI IYALVFLLSL LGNSLVMLVI LYSRVGRSVT DVYLLNLALA DLLFALTLPI W AASKVNGW  ...String: MGKTIIALSY IFCLVFADYK DDDDAANFTP VNGSSGNQSV RLVTSSSLEV LFQGPGSEDF NMESDSFEDF WKGEDLSNYS  YSSTLPPFL LDAAPCEPES LEINKYFVVI IYALVFLLSL LGNSLVMLVI LYSRVGRSVT DVYLLNLALA DLLFALTLPI W AASKVNGW IFGTFLCKVV SLLKEVNFYS GILLLACISV DRYLAIVHAT RTLTQKRYLV KFICLSIWGL SLLLALPVLL FR RTVYSSN VSPACYEDMG NNTANWRMLL RILPQSFGFI VPLLIMLFCY GFTLRTLFKA HMGQKHRAMR VIFAVVLIFL LCW LPYNLV LLADTLMRTQ VIQETCERRN HIDRALDATE ILGILHSCLN PLIYAFIGQK FRHGLLKILA IHGLISKDSL PKDS RPSFV GSSSGHTSTT L UniProtKB: C-X-C chemokine receptor type 2 | 
-Macromolecule #3: Guanine nucleotide-binding protein G(o) subunit alpha
| Macromolecule | Name: Guanine nucleotide-binding protein G(o) subunit alpha / type: protein_or_peptide / ID: 3 / Number of copies: 2 / Enantiomer: LEVO | 
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| Source (natural) | Organism:  Homo sapiens (human) | 
| Molecular weight | Theoretical: 27.024762 KDa | 
| Recombinant expression | Organism:   Escherichia coli (E. coli) | 
| Sequence | String: MGHHHHHHEN LYFQGTLSAE ERAALERSKA IEKNLKEDGI SAAKDVKLLL LGADNSGKST IVKQMKIIHG GSGGSGGTTG  IVETHFTFK NLHFRLFDVG GQRSERKKWI HCFEDVTAII FCVDLSDYNR MHESLMLFDS ICNNKFFIDT SIILFLNKKD L FGEKIKKS  ...String: MGHHHHHHEN LYFQGTLSAE ERAALERSKA IEKNLKEDGI SAAKDVKLLL LGADNSGKST IVKQMKIIHG GSGGSGGTTG  IVETHFTFK NLHFRLFDVG GQRSERKKWI HCFEDVTAII FCVDLSDYNR MHESLMLFDS ICNNKFFIDT SIILFLNKKD L FGEKIKKS PLTICFPEYT GPNTYEDAAA YIQAQFESKN RSPNKEIYCH MTCATDTNNA QVIFDAVTDI IIANNLRGCG LY UniProtKB: Guanine nucleotide-binding protein G(o) subunit alpha | 
-Macromolecule #4: Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1
| Macromolecule | Name: Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1 type: protein_or_peptide / ID: 4 / Number of copies: 2 / Enantiomer: LEVO | 
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| Source (natural) | Organism:  Homo sapiens (human) | 
| Molecular weight | Theoretical: 38.534062 KDa | 
| Recombinant expression | Organism:   Spodoptera frugiperda (fall armyworm) | 
| Sequence | String: MHHHHHHGSS GSELDQLRQE AEQLKNQIRD ARKACADATL SQITNNIDPV GRIQMRTRRT LRGHLAKIYA MHWGTDSRLL  VSASQDGKL IIWDSYTTNK VHAIPLRSSW VMTCAYAPSG NYVACGGLDN ICSIYNLKTR EGNVRVSREL AGHTGYLSCC R FLDDNQIV  ...String: MHHHHHHGSS GSELDQLRQE AEQLKNQIRD ARKACADATL SQITNNIDPV GRIQMRTRRT LRGHLAKIYA MHWGTDSRLL  VSASQDGKL IIWDSYTTNK VHAIPLRSSW VMTCAYAPSG NYVACGGLDN ICSIYNLKTR EGNVRVSREL AGHTGYLSCC R FLDDNQIV TSSGDTTCAL WDIETGQQTT TFTGHTGDVM SLSLAPDTRL FVSGACDASA KLWDVREGMC RQTFTGHESD IN AICFFPN GNAFATGSDD ATCRLFDLRA DQELMTYSHD NIICGITSVS FSKSGRLLLA GYDDFNCNVW DALKADRAGV LAG HDNRVS CLGVTDDGMA VATGSWDSFL KIWN UniProtKB: Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1 | 
-Macromolecule #5: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2
| Macromolecule | Name: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2 type: protein_or_peptide / ID: 5 / Number of copies: 2 / Enantiomer: LEVO | 
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| Source (natural) | Organism:  Homo sapiens (human) | 
| Molecular weight | Theoretical: 7.861143 KDa | 
| Recombinant expression | Organism:   Spodoptera frugiperda (fall armyworm) | 
| Sequence | String: MASNNTASIA QARKLVEQLK MEANIDRIKV SKAAADLMAY CEAHAKEDPL LTPVPASENP FREKKFFCAI L UniProtKB: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2 | 
-Experimental details
-Structure determination
| Method | cryo EM | 
|---|---|
|  Processing | single particle reconstruction | 
| Aggregation state | particle | 
- Sample preparation
Sample preparation
| Buffer | pH: 7.4 | 
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| Vitrification | Cryogen name: ETHANE | 
- Electron microscopy
Electron microscopy
| Microscope | FEI TITAN KRIOS | 
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| Image recording | Film or detector model: GATAN K3 (6k x 4k) / Detector mode: COUNTING / Average electron dose: 50.2 e/Å2 | 
| Electron beam | Acceleration voltage: 300 kV / Electron source:  FIELD EMISSION GUN | 
| Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Cs: 2.7 mm / Nominal defocus max: 1.6 µm / Nominal defocus min: 0.8 µm | 
| Sample stage | Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER / Cooling holder cryogen: NITROGEN | 
| Experimental equipment |  Model: Titan Krios / Image courtesy: FEI Company | 
+ Image processing
Image processing
-Atomic model buiding 1
| Initial model | Chain - Source name: SwissModel / Chain - Initial model type: in silico model | 
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| Refinement | Space: REAL / Protocol: FLEXIBLE FIT | 
| Output model |  PDB-8xx7:  | 
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