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Yorodumi- EMDB-43254: Cryo-EM structure of GPR119-Gs-Nb35 complex with small molecule a... -
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Basic information
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| Title | Cryo-EM structure of GPR119-Gs-Nb35 complex with small molecule agonist MBX-2982 (G protein-focused map) | |||||||||
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Keywords | CryoEM / GPCR / Orphan / G protein complex / Active / Agonist / MEMBRANE PROTEIN / Diabetes / Native Mass Spectrometry | |||||||||
| Biological species | ![]() Homo sapiens (human) / ![]() | |||||||||
| Method | single particle reconstruction / cryo EM / Resolution: 3.47 Å | |||||||||
Authors | Kim D-G / Cherezov V | |||||||||
| Funding support | United States, 1 items
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Citation | Journal: Structure / Year: 2024Title: Native mass spectrometry prescreening of G protein-coupled receptor complexes for cryo-EM structure determination. Authors: Donggyun Kim / Weijing Liu / Rosa Viner / Vadim Cherezov / ![]() Abstract: G protein-coupled receptors (GPCRs) are essential transmembrane proteins playing key roles in human health and disease. Understanding their atomic-level molecular structure and conformational states ...G protein-coupled receptors (GPCRs) are essential transmembrane proteins playing key roles in human health and disease. Understanding their atomic-level molecular structure and conformational states is imperative for advancing drug development. Recent breakthroughs in single-particle cryogenic electron microscopy (cryo-EM) have propelled the structural biology of GPCRs into a new era. Nevertheless, the preparation of suitable GPCR samples and their complexes for cryo-EM analysis remains challenging due to their poor stability and highly dynamic nature. Here, we present our online buffer exchange-native MS method combined with Direct Mass Technology (OBE-nMS+DMT) which facilitates high-throughput analysis and guides sample preparation. We applied this method to optimize the GPR119-G complex sample prior to cryo-EM analysis, leading to a 3.51 Å resolution structure from only 396 movies collected on a 200 kV Glacios. This study suggests that the OBE-nMS+DMT method emerges as a powerful tool for prescreening sample conditions in cryo-EM studies of GPCRs and other membrane protein complexes. | |||||||||
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Structure visualization
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Downloads & links
-EMDB archive
| Map data | emd_43254.map.gz | 1.7 MB | EMDB map data format | |
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| Header (meta data) | emd-43254-v30.xml emd-43254.xml | 27.5 KB 27.5 KB | Display Display | EMDB header |
| FSC (resolution estimation) | emd_43254_fsc.xml | 10.8 KB | Display | FSC data file |
| Images | emd_43254.png | 23 KB | ||
| Masks | emd_43254_msk_1.map | 129.7 MB | Mask map | |
| Filedesc metadata | emd-43254.cif.gz | 7 KB | ||
| Others | emd_43254_additional_1.map.gz emd_43254_half_map_1.map.gz emd_43254_half_map_2.map.gz | 65.1 MB 120.5 MB 120.5 MB | ||
| Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-43254 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-43254 | HTTPS FTP |
-Validation report
| Summary document | emd_43254_validation.pdf.gz | 1 MB | Display | EMDB validaton report |
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| Full document | emd_43254_full_validation.pdf.gz | 1 MB | Display | |
| Data in XML | emd_43254_validation.xml.gz | 19.1 KB | Display | |
| Data in CIF | emd_43254_validation.cif.gz | 24.6 KB | Display | |
| Arichive directory | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-43254 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-43254 | HTTPS FTP |
-Related structure data
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Links
| EMDB pages | EMDB (EBI/PDBe) / EMDataResource |
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Map
| File | Download / File: emd_43254.map.gz / Format: CCP4 / Size: 129.7 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: 0.92 Å | ||||||||||||||||||||||||||||||||||||
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| Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||
| Details | EMDB XML:
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-Supplemental data
-Mask #1
| File | emd_43254_msk_1.map | ||||||||||||
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-Additional map: original map
| File | emd_43254_additional_1.map | ||||||||||||
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| Annotation | original map | ||||||||||||
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-Half map: #2
| File | emd_43254_half_map_1.map | ||||||||||||
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-Half map: #1
| File | emd_43254_half_map_2.map | ||||||||||||
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Sample components
+Entire : GPR119-Gs-Nb35 complex
+Supramolecule #1: GPR119-Gs-Nb35 complex
+Supramolecule #2: Glucose-dependent insulinotropic receptor
+Supramolecule #3: Gs-Nb35 complex
+Supramolecule #4: G-protein complex
+Supramolecule #5: Nanobody35
+Macromolecule #1: Guanine nucleotide-bindign protein G(s) subunit alpha isoforms short
+Macromolecule #2: Guanine nucleotide-bindign protein G(I)/G(S)/G(T) subunit beta-1,HiBiT
+Macromolecule #3: Guanine nucleotide-bindign protein G(I)/G(S)/G(O) subunit gamma-2
+Macromolecule #4: Nanobody35
+Macromolecule #5: Soluble cytochrome b562,Glucose-dependent insulinotropic receptor...
-Experimental details
-Structure determination
| Method | cryo EM |
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Processing | single particle reconstruction |
| Aggregation state | particle |
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Sample preparation
| Concentration | 3 mg/mL |
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| Buffer | pH: 7.5 |
| Grid | Model: Quantifoil R1.2/1.3 / Material: GOLD / Mesh: 200 / Support film - Material: CARBON / Support film - topology: HOLEY |
| Vitrification | Cryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 277.15 K / Instrument: FEI VITROBOT MARK IV |
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Electron microscopy
| Microscope | TFS GLACIOS |
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| Image recording | Film or detector model: FEI FALCON IV (4k x 4k) / Number real images: 396 / Average electron dose: 50.0 e/Å2 |
| Electron beam | Acceleration voltage: 200 kV / Electron source: FIELD EMISSION GUN |
| Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Cs: 2.7 mm / Nominal defocus max: 2.4 µm / Nominal defocus min: 0.8 µm |
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Image processing
-Atomic model buiding 1
| Initial model | PDB ID: Chain - Source name: PDB / Chain - Initial model type: experimental model |
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About Yorodumi



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




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FIELD EMISSION GUN

