+Open data
-Basic information
Entry | Database: PDB / ID: 7dfl | ||||||
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Title | Cryo-EM structure of histamine H1 receptor Gq complex | ||||||
Components |
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Keywords | MEMBRANE PROTEIN / complex | ||||||
Function / homology | Function and homology information Histamine receptors / histamine receptor activity / cellular response to histamine / regulation of vascular permeability / G protein-coupled serotonin receptor activity / neurotransmitter receptor activity / G protein-coupled receptor signaling pathway, coupled to cyclic nucleotide second messenger / positive regulation of vasoconstriction / visual learning / Olfactory Signaling Pathway ...Histamine receptors / histamine receptor activity / cellular response to histamine / regulation of vascular permeability / G protein-coupled serotonin receptor activity / neurotransmitter receptor activity / G protein-coupled receptor signaling pathway, coupled to cyclic nucleotide second messenger / positive regulation of vasoconstriction / visual learning / Olfactory Signaling Pathway / Activation of the phototransduction cascade / regulation of synaptic plasticity / Prostacyclin signalling through prostacyclin receptor / G beta:gamma signalling through PLC beta / Presynaptic function of Kainate receptors / Thromboxane signalling through TP receptor / Glucagon signaling in metabolic regulation / G protein-coupled acetylcholine receptor signaling pathway / G-protein activation / Activation of G protein gated Potassium channels / Inhibition of voltage gated Ca2+ channels via Gbeta/gamma subunits / G beta:gamma signalling through CDC42 / memory / Vasopressin regulates renal water homeostasis via Aquaporins / G beta:gamma signalling through BTK / ADP signalling through P2Y purinoceptor 12 / Synthesis, secretion, and inactivation of Glucagon-like Peptide-1 (GLP-1) / Glucagon-type ligand receptors / Sensory perception of sweet, bitter, and umami (glutamate) taste / photoreceptor disc membrane / G alpha (z) signalling events / Adrenaline,noradrenaline inhibits insulin secretion / Glucagon-like Peptide-1 (GLP1) regulates insulin secretion / ADORA2B mediated anti-inflammatory cytokines production / cellular response to catecholamine stimulus / sensory perception of taste / ADP signalling through P2Y purinoceptor 1 / adenylate cyclase-activating dopamine receptor signaling pathway / G beta:gamma signalling through PI3Kgamma / GPER1 signaling / Cooperation of PDCL (PhLP1) and TRiC/CCT in G-protein beta folding / cellular response to prostaglandin E stimulus / Inactivation, recovery and regulation of the phototransduction cascade / G-protein beta-subunit binding / heterotrimeric G-protein complex / G alpha (12/13) signalling events / extracellular vesicle / signaling receptor complex adaptor activity / Thrombin signalling through proteinase activated receptors (PARs) / GTPase binding / retina development in camera-type eye / Ca2+ pathway / phospholipase C-activating G protein-coupled receptor signaling pathway / G alpha (i) signalling events / fibroblast proliferation / G alpha (s) signalling events / G alpha (q) signalling events / chemical synaptic transmission / Ras protein signal transduction / cell population proliferation / Extra-nuclear estrogen signaling / inflammatory response / G protein-coupled receptor signaling pathway / lysosomal membrane / GTPase activity / dendrite / synapse / protein-containing complex binding / signal transduction / extracellular exosome / membrane / plasma membrane / cytosol / cytoplasm Similarity search - Function | ||||||
Biological species | Homo sapiens (human) | ||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.3 Å | ||||||
Authors | He, Y. / Xia, R. / Wang, N. / Xu, Z. | ||||||
Citation | Journal: Nat Commun / Year: 2021 Title: Cryo-EM structure of the human histamine H receptor/G complex. Authors: Ruixue Xia / Na Wang / Zhenmei Xu / Yang Lu / Jing Song / Anqi Zhang / Changyou Guo / Yuanzheng He / Abstract: Histamine receptors play important roles in various pathophysiological conditions and are effective targets for anti-allergy treatment, however the mechanism of receptor activation remain elusive. ...Histamine receptors play important roles in various pathophysiological conditions and are effective targets for anti-allergy treatment, however the mechanism of receptor activation remain elusive. Here, we present the cryo-electron microscopy (cryo-EM) structure of the human HR in complex with a G protein in an active conformation via a NanoBiT tethering strategy. The structure reveals that histamine activates receptor via interacting with the key residues of both transmembrane domain 3 (TM3) and TM6 to squash the binding pocket on the extracellular side and to open the cavity on the intracellular side for G engagement in a model of "squash to activate and expand to deactivate". The structure also reveals features for G coupling, including the interaction between intracellular loop 2 (ICL2) and the αN-β junction of G protein. The detailed analysis of our structure will provide a framework for understanding G-protein coupling selectivity and clues for designing novel antihistamines. | ||||||
History |
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-Structure visualization
Movie |
Movie viewer |
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Structure viewer | Molecule: MolmilJmol/JSmol |
-Downloads & links
-Download
PDBx/mmCIF format | 7dfl.cif.gz | 214.3 KB | Display | PDBx/mmCIF format |
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PDB format | pdb7dfl.ent.gz | 170.5 KB | Display | PDB format |
PDBx/mmJSON format | 7dfl.json.gz | Tree view | PDBx/mmJSON format | |
Others | Other downloads |
-Validation report
Summary document | 7dfl_validation.pdf.gz | 798.5 KB | Display | wwPDB validaton report |
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Full document | 7dfl_full_validation.pdf.gz | 811.8 KB | Display | |
Data in XML | 7dfl_validation.xml.gz | 40.3 KB | Display | |
Data in CIF | 7dfl_validation.cif.gz | 61.4 KB | Display | |
Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/df/7dfl ftp://data.pdbj.org/pub/pdb/validation_reports/df/7dfl | HTTPS FTP |
-Related structure data
Related structure data | 30665MC M: map data used to model this data C: citing same article (ref.) |
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Similar structure data |
-Links
-Assembly
Deposited unit |
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1 |
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-Components
-Guanine nucleotide-binding protein ... , 3 types, 3 molecules BGA
#2: Protein | Mass: 37285.734 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Gene: GNB1 / Production host: Spodoptera frugiperda (fall armyworm) / References: UniProt: P62873 |
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#3: Protein | Mass: 6375.332 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Gene: GNG2 / Production host: Spodoptera frugiperda (fall armyworm) / References: UniProt: P59768 |
#4: Protein | Mass: 41090.637 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Production host: Spodoptera frugiperda (fall armyworm) |
-Protein / Antibody / Non-polymers , 3 types, 3 molecules RC
#1: Protein | Mass: 55856.035 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Gene: HRH1 / Production host: Spodoptera frugiperda (fall armyworm) / References: UniProt: P35367 |
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#5: Antibody | Mass: 26679.721 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Production host: Spodoptera frugiperda (fall armyworm) |
#6: Chemical | ChemComp-HSM / |
-Details
Has ligand of interest | N |
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-Experimental details
-Experiment
Experiment | Method: ELECTRON MICROSCOPY |
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EM experiment | Aggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction |
-Sample preparation
Component | Name: GPCR/G-protein complex / Type: COMPLEX / Entity ID: #1-#5 / Source: RECOMBINANT |
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Molecular weight | Value: 130 kDa/nm / Experimental value: NO |
Source (natural) | Organism: Homo sapiens (human) |
Source (recombinant) | Organism: Spodoptera frugiperda (fall armyworm) |
Buffer solution | pH: 7.5 |
Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES |
Vitrification | Cryogen name: ETHANE / Humidity: 100 % |
-Electron microscopy imaging
Experimental equipment | Model: Titan Krios / Image courtesy: FEI Company |
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Microscopy | Model: FEI TITAN KRIOS |
Electron gun | Electron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM |
Electron lens | Mode: BRIGHT FIELD / Nominal defocus min: 1200 nm / Cs: 0.01 mm |
Image recording | Electron dose: 56 e/Å2 / Film or detector model: GATAN K3 (6k x 4k) |
-Processing
Software | Name: PHENIX / Version: 1.18.2_3874: / Classification: refinement | ||||||||||||||||||||||||
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CTF correction | Type: NONE | ||||||||||||||||||||||||
3D reconstruction | Resolution: 3.3 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 169241 / Symmetry type: POINT | ||||||||||||||||||||||||
Refinement | Cross valid method: NONE Stereochemistry target values: GeoStd + Monomer Library + CDL v1.2 | ||||||||||||||||||||||||
Displacement parameters | Biso mean: 98.39 Å2 | ||||||||||||||||||||||||
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