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Yorodumi- EMDB-64915: Cryo-EM structure of the human neurotensin receptor 1 (hNTSR1)-Gi... -
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Basic information
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| Title | Cryo-EM structure of the human neurotensin receptor 1 (hNTSR1)-Gi1 complex in the GDP-bound, AHD-closed C state 1, plunge-frozen 15 seconds after GDP addition | ||||||||||||||||||||||||
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Keywords | GPCR / NTSR1 / neurotensin / G-protein / membrane protein | ||||||||||||||||||||||||
| Function / homology | Function and homology informationG protein-coupled neurotensin receptor activity / inositol phosphate catabolic process / symmetric synapse / positive regulation of locomotion / regulation of inositol trisphosphate biosynthetic process / positive regulation of gamma-aminobutyric acid secretion / D-aspartate import across plasma membrane / positive regulation of arachidonate secretion / L-glutamate import across plasma membrane / vocalization behavior ...G protein-coupled neurotensin receptor activity / inositol phosphate catabolic process / symmetric synapse / positive regulation of locomotion / regulation of inositol trisphosphate biosynthetic process / positive regulation of gamma-aminobutyric acid secretion / D-aspartate import across plasma membrane / positive regulation of arachidonate secretion / L-glutamate import across plasma membrane / vocalization behavior / regulation of behavioral fear response / cAMP biosynthetic process / regulation of respiratory gaseous exchange / positive regulation of inhibitory postsynaptic potential / negative regulation of systemic arterial blood pressure / negative regulation of release of sequestered calcium ion into cytosol / positive regulation of glutamate secretion / response to food / regulation of membrane depolarization / response to lipid / temperature homeostasis / positive regulation of inositol phosphate biosynthetic process / detection of temperature stimulus involved in sensory perception of pain / response to stress / conditioned place preference / adenylate cyclase inhibitor activity / positive regulation of protein localization to cell cortex / T cell migration / positive regulation of relaxation of smooth muscle / Adenylate cyclase inhibitory pathway / D2 dopamine receptor binding / adenylate cyclase-inhibiting serotonin receptor signaling pathway / G protein-coupled serotonin receptor binding / cellular response to forskolin / Peptide ligand-binding receptors / positive regulation of release of sequestered calcium ion into cytosol / regulation of mitotic spindle organization / chemokine-mediated signaling pathway / dendritic shaft / adult locomotory behavior / Regulation of insulin secretion / neuropeptide signaling pathway / response to prostaglandin E / positive regulation of cholesterol biosynthetic process / negative regulation of insulin secretion / G protein-coupled receptor binding / response to peptide hormone / G protein-coupled receptor activity / cytoplasmic side of plasma membrane / centriolar satellite / G-protein beta/gamma-subunit complex binding / adenylate cyclase-modulating G protein-coupled receptor signaling pathway / adenylate cyclase-inhibiting G protein-coupled receptor signaling pathway / Olfactory Signaling Pathway / Activation of the phototransduction cascade / G protein-coupled acetylcholine receptor signaling pathway / terminal bouton / G beta:gamma signalling through PLC beta / Presynaptic function of Kainate receptors / Thromboxane signalling through TP receptor / Activation of G protein gated Potassium channels / Inhibition of voltage gated Ca2+ channels via Gbeta/gamma subunits / G-protein activation / Glucagon signaling in metabolic regulation / Prostacyclin signalling through prostacyclin receptor / G beta:gamma signalling through CDC42 / Synthesis, secretion, and inactivation of Glucagon-like Peptide-1 (GLP-1) / G beta:gamma signalling through BTK / photoreceptor disc membrane / ADP signalling through P2Y purinoceptor 12 / Sensory perception of sweet, bitter, and umami (glutamate) taste / Glucagon-type ligand receptors / GDP binding / Adrenaline,noradrenaline inhibits insulin secretion / Vasopressin regulates renal water homeostasis via Aquaporins / 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 / cellular response to prostaglandin E stimulus / heterotrimeric G-protein complex / G alpha (12/13) signalling events / Inactivation, recovery and regulation of the phototransduction cascade / G-protein beta-subunit binding / extracellular vesicle / sensory perception of taste / sperm principal piece / Thrombin signalling through proteinase activated receptors (PARs) / signaling receptor complex adaptor activity / adenylate cyclase-activating G protein-coupled receptor signaling pathway / retina development in camera-type eye / GTPase binding / fibroblast proliferation / G protein activity / midbody Similarity search - Function | ||||||||||||||||||||||||
| Biological species | Homo sapiens (human) / synthetic construct (others) / ![]() | ||||||||||||||||||||||||
| Method | single particle reconstruction / Resolution: 2.85 Å | ||||||||||||||||||||||||
Authors | Kobayashi K / Matsui TE / Fukuda M / Kawakami K / Yamashita K / Kato HE | ||||||||||||||||||||||||
| Funding support | Japan, 7 items
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Citation | Journal: Nature / Year: 2026Title: The dynamic basis of G-protein recognition and activation by a GPCR. Authors: Kazuhiro Kobayashi / Kouki Kawakami / Toshiki E Matsui / Shun Yokoi / Masahiro Fukuda / Tomohiro J Narita / Hiroki Arai / Mai Tambo / Takashi Sumikama / Manae Tatsumi / Keitaro Yamashita / ...Authors: Kazuhiro Kobayashi / Kouki Kawakami / Toshiki E Matsui / Shun Yokoi / Masahiro Fukuda / Tomohiro J Narita / Hiroki Arai / Mai Tambo / Takashi Sumikama / Manae Tatsumi / Keitaro Yamashita / Junki Koyanagi / Mai Kugawa / Hisako Ikeda / Ayumi Sumino / Ayori Mitsutake / Brian K Kobilka / Asuka Inoue / Hideaki E Kato / ![]() Abstract: G-protein-coupled receptor (GPCR) signalling occurs through heterotrimeric G proteins, whose selective activation leads to distinct cellular outcomes. Although more than 200 GPCR-G protein complex ...G-protein-coupled receptor (GPCR) signalling occurs through heterotrimeric G proteins, whose selective activation leads to distinct cellular outcomes. Although more than 200 GPCR-G protein complex structures have been determined, these static snapshots provide limited insight into the dynamics of G-protein association and dissociation. Here we present cryo-electron microscopy structures of human neurotensin receptor type 1 (NTSR1) with minimally modified G and G, showing how the receptor's intracellular surface dynamically rearranges to accommodate each G-protein subtype. Furthermore, time-resolved cryo-electron microscopy analyses of NTSR1-G visualized G-protein dissociation processes on GDP/GTP binding. Characterization of more than 20 intermediates, complemented by mutational and computational analyses, identifies four key mechanistic features. First, GDP/GTP induces G release from both canonical and non-canonical active conformations with distinct kinetics. Second, NTSR1 uses common intracellular rearrangements to recognize different G-protein subtypes and to promote activation of a single subtype. Third, separation from Gβγ involves stepwise remodelling of the Gα switches I-III. Finally, G dissociates from the receptor through a pathway that is distinct from that of G, and the canonical and non-canonical NTSR1-G complexes further diverge in their dissociation trajectories. These findings provide a comprehensive framework for understanding GPCR signalling dynamics and guiding signal-targeted therapeutic development. | ||||||||||||||||||||||||
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Structure visualization
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Downloads & links
-EMDB archive
| Map data | emd_64915.map.gz | 5.4 MB | EMDB map data format | |
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| Header (meta data) | emd-64915-v30.xml emd-64915.xml | 29.3 KB 29.3 KB | Display Display | EMDB header |
| FSC (resolution estimation) | emd_64915_fsc.xml | 5.9 KB | Display | FSC data file |
| Images | emd_64915.png | 137.9 KB | ||
| Masks | emd_64915_msk_1.map | 6 MB | Mask map | |
| Filedesc metadata | emd-64915.cif.gz | 7.5 KB | ||
| Others | emd_64915_additional_1.map.gz emd_64915_half_map_1.map.gz emd_64915_half_map_2.map.gz | 5.5 MB 5.5 MB 5.5 MB | ||
| Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-64915 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-64915 | HTTPS FTP |
-Related structure data
| Related structure data | ![]() 9vb4MC ![]() 20zcC ![]() 20zdC ![]() 20zgC ![]() 20zhC ![]() 20ziC ![]() 20zjC ![]() 20zkC ![]() 20zlC ![]() 9vatC ![]() 9vauC ![]() 9vavC ![]() 9vawC ![]() 9vaxC ![]() 9vayC ![]() 9vazC ![]() 9vb0C ![]() 9vb1C ![]() 9vb2C ![]() 9vb3C ![]() 9vb5C ![]() 9vb6C ![]() 9vb7C ![]() 9vbaC 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 |
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Links
| EMDB pages | EMDB (EBI/PDBe) / EMDataResource |
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| Related items in Molecule of the Month |
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Map
| File | Download / File: emd_64915.map.gz / Format: CCP4 / Size: 6 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: 1.38333 Å | ||||||||||||||||||||||||||||||||||||
| Density |
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| Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||
| Details | EMDB XML:
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-Supplemental data
-Mask #1
| File | emd_64915_msk_1.map | ||||||||||||
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-Additional map: #1
| File | emd_64915_additional_1.map | ||||||||||||
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-Half map: #2
| File | emd_64915_half_map_1.map | ||||||||||||
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-Half map: #1
| File | emd_64915_half_map_2.map | ||||||||||||
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Sample components
+Entire : JMV449-bound human Neurotensin Receptor 1 (hNTSR1)-Gi1 complex in...
+Supramolecule #1: JMV449-bound human Neurotensin Receptor 1 (hNTSR1)-Gi1 complex in...
+Supramolecule #2: JMV449-bound human neurotensin receptor type 1
+Supramolecule #3: GDP-bound heterotrimeric Gi1 protein
+Supramolecule #4: scFv16
+Macromolecule #1: Neurotensin receptor type 1
+Macromolecule #2: JMV449
+Macromolecule #3: Guanine nucleotide-binding protein G(i) subunit alpha-1
+Macromolecule #4: 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 #6: scFv16
+Macromolecule #7: GUANOSINE-5'-DIPHOSPHATE
-Experimental details
-Structure determination
Processing | single particle reconstruction |
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| Aggregation state | particle |
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Sample preparation
| Buffer | pH: 7.5 |
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| Grid | Model: Quantifoil R1.2/1.3 / Material: GOLD / Mesh: 300 / Support film - Material: GOLD / Support film - topology: HOLEY / Pretreatment - Type: GLOW DISCHARGE |
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Electron microscopy
| Microscope | TFS KRIOS |
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| Image recording | Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Average electron dose: 58.0 e/Å2 |
| Electron beam | Acceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN |
| Electron optics | Illumination mode: OTHER / Imaging mode: BRIGHT FIELD / Cs: 2.7 mm / Nominal defocus max: 1.6 µm / Nominal defocus min: 0.8 µm |
| Sample stage | Cooling holder cryogen: NITROGEN |
| Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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About Yorodumi



Keywords
Homo sapiens (human)
Authors
Japan, 7 items
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Processing
FIELD EMISSION GUN


