+
Open data
-
Basic information
| Entry | ![]() | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Title | Structure of REGN7663 Fab-bound CXCR4/Gi complex | |||||||||
Map data | ||||||||||
Sample |
| |||||||||
Keywords | GPCR / chemokine receptor / antibody / Fab / SIGNALING PROTEIN-IMMUNE SYSTEM complex | |||||||||
| Function / homology | Function and homology informationC-X-C motif chemokine 12 receptor activity / positive regulation of macrophage migration inhibitory factor signaling pathway / Specification of primordial germ cells / CXCL12-activated CXCR4 signaling pathway / myosin light chain binding / myelin maintenance / C-X-C chemokine receptor activity / positive regulation of vasculature development / Signaling by ROBO receptors / regulation of chemotaxis ...C-X-C motif chemokine 12 receptor activity / positive regulation of macrophage migration inhibitory factor signaling pathway / Specification of primordial germ cells / CXCL12-activated CXCR4 signaling pathway / myosin light chain binding / myelin maintenance / C-X-C chemokine receptor activity / positive regulation of vasculature development / Signaling by ROBO receptors / regulation of chemotaxis / Formation of definitive endoderm / C-C chemokine receptor activity / Developmental Lineage of Pancreatic Acinar Cells / C-C chemokine binding / Chemokine receptors bind chemokines / anchoring junction / dendritic cell chemotaxis / cellular response to cytokine stimulus / cell leading edge / positive regulation of oligodendrocyte differentiation / Binding and entry of HIV virion / regulation of cell adhesion / adenylate cyclase inhibitor activity / positive regulation of protein localization to cell cortex / coreceptor activity / Adenylate cyclase inhibitory pathway / T cell migration / 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 / neurogenesis / cellular response to forskolin / regulation of mitotic spindle organization / ubiquitin binding / cell chemotaxis / Regulation of insulin secretion / positive regulation of cholesterol biosynthetic process / calcium-mediated signaling / negative regulation of insulin secretion / G protein-coupled receptor binding / G protein-coupled receptor activity / response to peptide hormone / adenylate cyclase-inhibiting G protein-coupled receptor signaling pathway / brain development / adenylate cyclase-modulating G protein-coupled receptor signaling pathway / G-protein beta/gamma-subunit complex binding / response to virus / 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 / Activation of G protein gated Potassium channels / Inhibition of voltage gated Ca2+ channels via Gbeta/gamma subunits / G-protein activation / 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 / adenylate cyclase-activating dopamine receptor signaling pathway / Cooperation of PDCL (PhLP1) and TRiC/CCT in G-protein beta folding / GPER1 signaling / late endosome / 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) / positive regulation of cold-induced thermogenesis / retina development in camera-type eye / actin binding / G protein activity / positive regulation of cytosolic calcium ion concentration / virus receptor activity / GTPase binding / Ca2+ pathway / cytoplasmic vesicle / fibroblast proliferation Similarity search - Function | |||||||||
| Biological species | Homo sapiens (human) | |||||||||
| Method | single particle reconstruction / cryo EM / Resolution: 3.36 Å | |||||||||
Authors | Saotome K / McGoldrick LL / Franklin MC | |||||||||
| Funding support | United States, 1 items
| |||||||||
Citation | Journal: Nat Struct Mol Biol / Year: 2025Title: Structural insights into CXCR4 modulation and oligomerization. Authors: Kei Saotome / Luke L McGoldrick / Jo-Hao Ho / Trudy F Ramlall / Sweta Shah / Michael J Moore / Jee Hae Kim / Raymond Leidich / William C Olson / Matthew C Franklin / ![]() Abstract: Activation of the chemokine receptor CXCR4 by its chemokine ligand CXCL12 regulates diverse cellular processes. Previously reported crystal structures of CXCR4 revealed the architecture of an ...Activation of the chemokine receptor CXCR4 by its chemokine ligand CXCL12 regulates diverse cellular processes. Previously reported crystal structures of CXCR4 revealed the architecture of an inactive, homodimeric receptor. However, many structural aspects of CXCR4 remain poorly understood. Here, we use cryo-electron microscopy to investigate various modes of human CXCR4 regulation. CXCL12 activates CXCR4 by inserting its N terminus deep into the CXCR4 orthosteric pocket. The binding of US Food and Drug Administration-approved antagonist AMD3100 is stabilized by electrostatic interactions with acidic residues in the seven-transmembrane-helix bundle. A potent antibody blocker, REGN7663, binds across the extracellular face of CXCR4 and inserts its complementarity-determining region H3 loop into the orthosteric pocket. Trimeric and tetrameric structures of CXCR4 reveal modes of G-protein-coupled receptor oligomerization. We show that CXCR4 adopts distinct subunit conformations in trimeric and tetrameric assemblies, highlighting how oligomerization could allosterically regulate chemokine receptor function. #1: Journal: Biorxiv / Year: 2024Title: Structural insights into CXCR4 modulation and oligomerization Authors: Saotome K / McGoldrick LL / Ho J / Ramlall T / Shah S / Moore MJ / Kim JH / Leidich R / Olson WC / Franklin MC | |||||||||
| History |
|
-
Structure visualization
| Supplemental images |
|---|
-
Downloads & links
-EMDB archive
| Map data | emd_41891.map.gz | 168.2 MB | EMDB map data format | |
|---|---|---|---|---|
| Header (meta data) | emd-41891-v30.xml emd-41891.xml | 25.9 KB 25.9 KB | Display Display | EMDB header |
| Images | emd_41891.png | 76 KB | ||
| Filedesc metadata | emd-41891.cif.gz | 7.6 KB | ||
| Others | emd_41891_half_map_1.map.gz emd_41891_half_map_2.map.gz | 165.3 MB 165.3 MB | ||
| Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-41891 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-41891 | HTTPS FTP |
-Validation report
| Summary document | emd_41891_validation.pdf.gz | 1.2 MB | Display | EMDB validaton report |
|---|---|---|---|---|
| Full document | emd_41891_full_validation.pdf.gz | 1.2 MB | Display | |
| Data in XML | emd_41891_validation.xml.gz | 14.9 KB | Display | |
| Data in CIF | emd_41891_validation.cif.gz | 17.8 KB | Display | |
| Arichive directory | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-41891 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-41891 | HTTPS FTP |
-Related structure data
| Related structure data | ![]() 8u4qMC ![]() 8u4nC ![]() 8u4oC ![]() 8u4pC ![]() 8u4rC ![]() 8u4sC ![]() 8u4tC C: citing same article ( M: atomic model generated by this map |
|---|---|
| Similar structure data | Similarity search - Function & homology F&H Search |
-
Links
| EMDB pages | EMDB (EBI/PDBe) / EMDataResource |
|---|---|
| Related items in Molecule of the Month |
-
Map
| File | Download / File: emd_41891.map.gz / Format: CCP4 / Size: 178 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||
| Voxel size | X=Y=Z: 0.85 Å | ||||||||||||||||||||||||||||||||||||
| Density |
| ||||||||||||||||||||||||||||||||||||
| Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||
| Details | EMDB XML:
|
-Supplemental data
-Half map: #1
| File | emd_41891_half_map_1.map | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Projections & Slices |
| ||||||||||||
| Density Histograms |
-Half map: #2
| File | emd_41891_half_map_2.map | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Projections & Slices |
| ||||||||||||
| Density Histograms |
-
Sample components
-Entire : REGN7663 Fab-bound CXCR4/Gi complex
| Entire | Name: REGN7663 Fab-bound CXCR4/Gi complex |
|---|---|
| Components |
|
-Supramolecule #1: REGN7663 Fab-bound CXCR4/Gi complex
| Supramolecule | Name: REGN7663 Fab-bound CXCR4/Gi complex / type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#6 |
|---|---|
| Source (natural) | Organism: Homo sapiens (human) |
-Macromolecule #1: REGN7663 Fab light chain
| Macromolecule | Name: REGN7663 Fab light chain / type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO |
|---|---|
| Source (natural) | Organism: Homo sapiens (human) |
| Molecular weight | Theoretical: 24.185904 KDa |
| Recombinant expression | Organism: ![]() |
| Sequence | String: DVVMTQSPLS LPVTLGQPAS ISCRSSQSLV YTDGNTYLNW FQQRPGQSPR RLIYKVSNRD SGVPDRFSGS GSGTDFTLKI SRVEAEDVG FYYCMQNTHW PLTFGGGTKV EIKRTVAAPS VFIFPPSDEQ LKSGTASVVC LLNNFYPREA KVQWKVDNAL Q SGNSQESV ...String: DVVMTQSPLS LPVTLGQPAS ISCRSSQSLV YTDGNTYLNW FQQRPGQSPR RLIYKVSNRD SGVPDRFSGS GSGTDFTLKI SRVEAEDVG FYYCMQNTHW PLTFGGGTKV EIKRTVAAPS VFIFPPSDEQ LKSGTASVVC LLNNFYPREA KVQWKVDNAL Q SGNSQESV TEQDSKDSTY SLSSTLTLSK ADYEKHKVYA CEVTHQGLSS PVTKSFNRGE C |
-Macromolecule #2: REGN7663 Fab heavy chain
| Macromolecule | Name: REGN7663 Fab heavy chain / type: protein_or_peptide / ID: 2 / Number of copies: 1 / Enantiomer: LEVO |
|---|---|
| Source (natural) | Organism: Homo sapiens (human) |
| Molecular weight | Theoretical: 25.799934 KDa |
| Recombinant expression | Organism: ![]() |
| Sequence | String: QVQLVQSGAE VKKPGASVKV SCKASGYTFT SYGISWVRQA PGQGIEWMGW ISTYNGNRNY AQKVQGRVTM TTDRSTSTAY MDLRSLRSD DTAVYYCARH GITGARNYYY HYGMDVWGQG TTVTVSSAST KGPSVFPLAP CSRSTSESTA ALGCLVKDYF P EPVTVSWN ...String: QVQLVQSGAE VKKPGASVKV SCKASGYTFT SYGISWVRQA PGQGIEWMGW ISTYNGNRNY AQKVQGRVTM TTDRSTSTAY MDLRSLRSD DTAVYYCARH GITGARNYYY HYGMDVWGQG TTVTVSSAST KGPSVFPLAP CSRSTSESTA ALGCLVKDYF P EPVTVSWN SGALTSGVHT FPAVLQSSGL YSLSSVVTVP SSSLGTKTYT CNVDHKPSNT KVDKRVESKY GPPCPPCPAP PV |
-Macromolecule #3: C-X-C chemokine receptor type 4
| Macromolecule | Name: C-X-C chemokine receptor type 4 / type: protein_or_peptide / ID: 3 / Number of copies: 1 / Enantiomer: LEVO |
|---|---|
| Source (natural) | Organism: Homo sapiens (human) |
| Molecular weight | Theoretical: 71.063609 KDa |
| Recombinant expression | Organism: ![]() |
| Sequence | String: MKTIIALSYI FCLVFAGAPE GISIYTSDNY TEEMGSGDYD SMKEPCFREE NANFNKIFLP TIYSIIFLTG IVGNGLVILV MGYQKKLRS MTDKYRLHLS VADLLFVITL PFWAVDAVAN WYFGNFLCKA VHVIYTVSLY SSVLILAFIS LDRYLAIVHA T NSQRPRKL ...String: MKTIIALSYI FCLVFAGAPE GISIYTSDNY TEEMGSGDYD SMKEPCFREE NANFNKIFLP TIYSIIFLTG IVGNGLVILV MGYQKKLRS MTDKYRLHLS VADLLFVITL PFWAVDAVAN WYFGNFLCKA VHVIYTVSLY SSVLILAFIS LDRYLAIVHA T NSQRPRKL LAEKVVYVGV WIPALLLTIP DFIFANVSEA DDRYICDRFY PNDLWVVVFQ FQHIMVGLIL PGIVILSCYC II ISKLSHS KGHQKRKALK TTVILILAFF ACWLPYYIGI SIDSFILLEI IKQGCEFENT VHKWISITEA LAFFHCCLNP ILY AFLGAK FKTSAQHALT SVSRGSSLKI LSKGKRGGHS SVSTESESSS FHSSGRPLEV LFQGPGGGGS VSKGEELFTG VVPI LVELD GDVNGHKFSV SGEGEGDATY GKLTLKFICT TGKLPVPWPT LVTTLTYGVQ CFSRYPDHMK QHDFFKSAMP EGYVQ ERTI FFKDDGNYKT RAEVKFEGDT LVNRIELKGI DFKEDGNILG HKLEYNYNSH NVYIMADKQK NGIKVNFKIR HNIEDG SVQ LADHYQQNTP IGDGPVLLPD NHYLSTQSKL SKDPNEKRDH MVLLEFVTAA GITLGMDELY KDYKDDDDK UniProtKB: C-X-C chemokine receptor type 4 |
-Macromolecule #4: Guanine nucleotide-binding protein G(i) subunit alpha-1
| Macromolecule | Name: Guanine nucleotide-binding protein G(i) subunit alpha-1 type: protein_or_peptide / ID: 4 / Number of copies: 1 / Enantiomer: LEVO |
|---|---|
| Source (natural) | Organism: Homo sapiens (human) |
| Molecular weight | Theoretical: 41.591312 KDa |
| Recombinant expression | Organism: ![]() |
| Sequence | String: MHHHHHHGGG GSGCTLSAED KAAVERSKMI DRNLREDGEK AAREVKLLLL GAGESGKCTI VKQMKIIHEA GYSEEECKQY KAVVYSNTI QSIIAIIRAM GRLKIDFGDS ARADDARQLF VLAGAAEEGF MTAELAGVIK RLWKDSGVQA CFNRSREYQL N DSAAYYLN ...String: MHHHHHHGGG GSGCTLSAED KAAVERSKMI DRNLREDGEK AAREVKLLLL GAGESGKCTI VKQMKIIHEA GYSEEECKQY KAVVYSNTI QSIIAIIRAM GRLKIDFGDS ARADDARQLF VLAGAAEEGF MTAELAGVIK RLWKDSGVQA CFNRSREYQL N DSAAYYLN DLDRIAQPNY IPTQQDVLRT RVKTTGIVET HFTFKDLHFK MFDVTAQRSE RKKWIHCFEG VTAIIFCVAL SD YDLVLAE DEEMNRMHAS MKLFDSICNN KWFTDTSIIL FLNKKDLFEE KIKKSPLTIC YPEYAGSNTY EEAAAYIQCQ FED LNKRKD TKEIYTHFTC STDTKNVQFV FDAVTDVIIK NNLKDCGLF UniProtKB: Guanine nucleotide-binding protein G(i) subunit alpha-1 |
-Macromolecule #5: 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: 5 / Number of copies: 1 / Enantiomer: LEVO |
|---|---|
| Source (natural) | Organism: Homo sapiens (human) |
| Molecular weight | Theoretical: 38.534062 KDa |
| Recombinant expression | Organism: ![]() |
| 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 #6: 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: 6 / Number of copies: 1 / Enantiomer: LEVO |
|---|---|
| Source (natural) | Organism: Homo sapiens (human) |
| Molecular weight | Theoretical: 7.861143 KDa |
| Recombinant expression | Organism: ![]() |
| Sequence | String: MASNNTASIA QARKLVEQLK MEANIDRIKV SKAAADLMAY CEAHAKEDPL LTPVPASENP FREKKFFCAI L UniProtKB: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2 |
-Macromolecule #7: CHOLESTEROL
| Macromolecule | Name: CHOLESTEROL / type: ligand / ID: 7 / Number of copies: 1 / Formula: CLR |
|---|---|
| Molecular weight | Theoretical: 386.654 Da |
| Chemical component information | ![]() ChemComp-CLR: |
-Experimental details
-Structure determination
| Method | cryo EM |
|---|---|
Processing | single particle reconstruction |
| Aggregation state | particle |
-
Sample preparation
| Buffer | pH: 7.5 |
|---|---|
| Vitrification | Cryogen name: ETHANE |
-
Electron microscopy
| Microscope | TFS KRIOS |
|---|---|
| Image recording | Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Average electron dose: 40.0 e/Å2 |
| Electron beam | Acceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN |
| Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 2.2 µm / Nominal defocus min: 1.2 µm |
| Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
-
Image processing
| Startup model | Type of model: NONE |
|---|---|
| Final reconstruction | Resolution.type: BY AUTHOR / Resolution: 3.36 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 148703 |
| Initial angle assignment | Type: MAXIMUM LIKELIHOOD |
| Final angle assignment | Type: MAXIMUM LIKELIHOOD |
Movie
Controller
About Yorodumi




Keywords
Homo sapiens (human)
Authors
United States, 1 items
Citation













































Z (Sec.)
Y (Row.)
X (Col.)







































FIELD EMISSION GUN
