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Yorodumi- PDB-9gu0: Human adult muscle nAChR in resting state in detergent with alpha... -
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Open data
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Basic information
| Entry | Database: PDB / ID: 9gu0 | |||||||||
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| Title | Human adult muscle nAChR in resting state in detergent with alpha-bungarotoxin | |||||||||
Components |
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Keywords | MEMBRANE PROTEIN / Ligand-gated ion channel / nicotinic receptor / pLGIC / cys-loop receptor | |||||||||
| Function / homology | Function and homology informationpostsynaptic membrane organization / skeletal muscle tissue growth / musculoskeletal movement / Highly sodium permeable postsynaptic acetylcholine nicotinic receptors / Highly calcium permeable nicotinic acetylcholine receptors / Highly calcium permeable postsynaptic nicotinic acetylcholine receptors / acetylcholine receptor activity / acetylcholine-gated channel complex / behavioral response to nicotine / acetylcholine receptor inhibitor activity ...postsynaptic membrane organization / skeletal muscle tissue growth / musculoskeletal movement / Highly sodium permeable postsynaptic acetylcholine nicotinic receptors / Highly calcium permeable nicotinic acetylcholine receptors / Highly calcium permeable postsynaptic nicotinic acetylcholine receptors / acetylcholine receptor activity / acetylcholine-gated channel complex / behavioral response to nicotine / acetylcholine receptor inhibitor activity / neuromuscular synaptic transmission / acetylcholine-gated monoatomic cation-selective channel activity / muscle cell development / ion channel regulator activity / acetylcholine binding / synaptic transmission, cholinergic / monoatomic cation transmembrane transporter activity / nervous system process / acetylcholine receptor signaling pathway / ligand-gated monoatomic ion channel activity / postsynaptic specialization membrane / neuromuscular process / muscle cell cellular homeostasis / neuromuscular junction development / monoatomic cation transport / membrane depolarization / skeletal muscle contraction / neuronal action potential / muscle contraction / bioluminescence / generation of precursor metabolites and energy / response to nicotine / regulation of membrane potential / transmitter-gated monoatomic ion channel activity involved in regulation of postsynaptic membrane potential / neuromuscular junction / neuron cellular homeostasis / transmembrane signaling receptor activity / channel activity / toxin activity / monoatomic ion transmembrane transport / chemical synaptic transmission / postsynaptic membrane / neuron projection / synapse / cell surface / signal transduction / extracellular region / plasma membrane Similarity search - Function | |||||||||
| Biological species | Homo sapiens (human)![]() ![]() Bungarus multicinctus (many-banded krait) | |||||||||
| Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.96 Å | |||||||||
Authors | Li, A. / Pike, A.C.W. / Chi, G. / Webster, R. / Maxwell, S. / Liu, W. / Beeson, D. / Sauer, D.B. / Dong, Y.Y. | |||||||||
| Funding support | United Kingdom, 2items
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Citation | Journal: Cell Rep / Year: 2025Title: Structures of the human adult muscle-type nicotinic receptor in resting and desensitized states. Authors: Anna Li / Ashley C W Pike / Richard Webster / Susan Maxwell / Wei-Wei Liu / Gamma Chi / Jacqueline Palace / David Beeson / David B Sauer / Yin Yao Dong / ![]() Abstract: Muscle-type nicotinic acetylcholine receptor (AChR) is the key signaling molecule in neuromuscular junctions. Here, we present the structures of full-length human adult receptors in complex with ...Muscle-type nicotinic acetylcholine receptor (AChR) is the key signaling molecule in neuromuscular junctions. Here, we present the structures of full-length human adult receptors in complex with Fab35 in α-bungarotoxin (αBuTx)-bound resting states and ACh-bound desensitized states. In addition to identifying the conformational changes during recovery from desensitization, we also used electrophysiology to probe the effects of eight previously unstudied AChR genetic variants found in patients with congenital myasthenic syndrome (CMS), revealing they cause either slow- or fast-channel CMS characterized by prolonged or abbreviated ion channel bursts. The combined kinetic and structural data offer a better understanding of both the AChR state transition and the pathogenic mechanisms of disease variants. | |||||||||
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Structure visualization
| Structure viewer | Molecule: Molmil Jmol/JSmol |
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Downloads & links
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Download
| PDBx/mmCIF format | 9gu0.cif.gz | 728.2 KB | Display | PDBx/mmCIF format |
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| PDB format | pdb9gu0.ent.gz | 470.9 KB | Display | PDB format |
| PDBx/mmJSON format | 9gu0.json.gz | Tree view | PDBx/mmJSON format | |
| Others | Other downloads |
-Validation report
| Summary document | 9gu0_validation.pdf.gz | 2 MB | Display | wwPDB validaton report |
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| Full document | 9gu0_full_validation.pdf.gz | 2.1 MB | Display | |
| Data in XML | 9gu0_validation.xml.gz | 88.8 KB | Display | |
| Data in CIF | 9gu0_validation.cif.gz | 137.8 KB | Display | |
| Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/gu/9gu0 ftp://data.pdbj.org/pub/pdb/validation_reports/gu/9gu0 | HTTPS FTP |
-Related structure data
| Related structure data | ![]() 51568MC ![]() 9gu1C ![]() 9gu2C ![]() 9gu3C M: map data used to model this data C: citing same article ( |
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| Similar structure data | Similarity search - Function & homology F&H Search |
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Links
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Assembly
| Deposited unit | ![]()
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Components
-Acetylcholine receptor subunit ... , 4 types, 5 molecules ALBDE
| #1: Protein | Mass: 49747.645 Da / Num. of mol.: 2 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Gene: CHRNA1, ACHRA, CHNRA / Plasmid: TLCV2 / Cell line (production host): Expi293F / Production host: Homo sapiens (human) / References: UniProt: P02708#2: Protein | | Mass: 54596.477 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Gene: CHRNB1, ACHRB, CHRNB / Plasmid: TLCV2 / Cell line (production host): Expi293F / Production host: Homo sapiens (human) / References: UniProt: P11230#4: Protein | | Mass: 56915.359 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Gene: CHRND, ACHRD / Plasmid: TLCV2 / Cell line (production host): Expi293F / Production host: Homo sapiens (human) / References: UniProt: Q07001#5: Protein | | Mass: 80603.750 Da / Num. of mol.: 1 Mutation: EGFP insertion between residues R344 and A345 in the M3-M4 intracellular loop Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human), (gene. exp.) ![]() Gene: CHRNE, ACHRE, GFP / Plasmid: TLCV2 / Cell line (production host): Expi293F / Production host: Homo sapiens (human) / References: UniProt: Q04844, UniProt: P42212 |
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-Protein , 1 types, 2 molecules JI
| #7: Protein | Mass: 8005.281 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Bungarus multicinctus (many-banded krait) / References: UniProt: P60615 |
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-Antibody , 2 types, 4 molecules CGFH
| #3: Antibody | Mass: 23392.982 Da / Num. of mol.: 2 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() #6: Antibody | Mass: 23879.758 Da / Num. of mol.: 2 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() |
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-Sugars , 6 types, 7 molecules 
| #8: Polysaccharide | Source method: isolated from a genetically manipulated source #9: Polysaccharide | alpha-D-mannopyranose-(1-6)-beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1- ...alpha-D-mannopyranose-(1-6)-beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose | Source method: isolated from a genetically manipulated source #10: Polysaccharide | 2-acetamido-2-deoxy-beta-D-glucopyranose-(1-2)-alpha-D-mannopyranose-(1-3)-[alpha-D-mannopyranose- ...2-acetamido-2-deoxy-beta-D-glucopyranose-(1-2)-alpha-D-mannopyranose-(1-3)-[alpha-D-mannopyranose-(1-3)-alpha-D-mannopyranose-(1-6)]beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose | Type: oligosaccharide / Mass: 1276.157 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source #11: Polysaccharide | 2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose | Source method: isolated from a genetically manipulated source #12: Polysaccharide | beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta- ...beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose | Source method: isolated from a genetically manipulated source #13: Sugar | ChemComp-NAG / | |
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-Details
| Has ligand of interest | N |
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| Has protein modification | Y |
-Experimental details
-Experiment
| Experiment | Method: ELECTRON MICROSCOPY |
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| EM experiment | Aggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction |
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Sample preparation
| Component | Name: Human adult muscle nAChR in resting state in detergent with alpha-bungarotoxin Type: COMPLEX / Details: nAChR in complex with alpha-bungarotoxin and Fab35 / Entity ID: #1-#7 / Source: RECOMBINANT | |||||||||||||||||||||||||
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| Molecular weight | Value: 0.402 MDa / Experimental value: NO | |||||||||||||||||||||||||
| Source (natural) | Organism: Homo sapiens (human) | |||||||||||||||||||||||||
| Source (recombinant) | Organism: Homo sapiens (human) / Cell: Expi293F / Plasmid: TLCV2 | |||||||||||||||||||||||||
| Buffer solution | pH: 7.5 Details: 20 mM HEPES pH 7.5, 150 mM NaCl, 0.013% DDM, 0.0013% CHS | |||||||||||||||||||||||||
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| Specimen | Conc.: 1.68 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES / Details: This sample was monodisperse | |||||||||||||||||||||||||
| Specimen support | Grid material: GOLD / Grid mesh size: 300 divisions/in. / Grid type: UltrAuFoil R1.2/1.3 | |||||||||||||||||||||||||
| Vitrification | Instrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 277.35 K / Details: blot time 2s, blot force -10 |
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Electron microscopy imaging
| Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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| Microscopy | Model: TFS KRIOS / Details: objective aperture 70 um |
| Electron gun | Electron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM |
| Electron lens | Mode: BRIGHT FIELD / Nominal magnification: 130000 X / Nominal defocus max: 2400 nm / Nominal defocus min: 1200 nm / Cs: 2.7 mm / C2 aperture diameter: 50 µm / Alignment procedure: COMA FREE |
| Specimen holder | Cryogen: NITROGEN / Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER |
| Image recording | Average exposure time: 4.71 sec. / Electron dose: 50 e/Å2 / Film or detector model: TFS FALCON 4i (4k x 4k) / Num. of grids imaged: 1 / Num. of real images: 18672 |
| EM imaging optics | Energyfilter name: TFS Selectris X / Energyfilter slit width: 10 eV |
| Image scans | Width: 4096 / Height: 4096 |
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Processing
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| CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||||||||||||||||||||||||||
| Particle selection | Num. of particles selected: 1249235 / Details: Extracted by topaz picking | ||||||||||||||||||||||||||||||||||||||||||||||||
| Symmetry | Point symmetry: C1 (asymmetric) | ||||||||||||||||||||||||||||||||||||||||||||||||
| 3D reconstruction | Resolution: 2.96 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 31022 / Algorithm: FOURIER SPACE / Details: Non-uniform refinement / Num. of class averages: 1 / Symmetry type: POINT | ||||||||||||||||||||||||||||||||||||||||||||||||
| Atomic model building | Protocol: FLEXIBLE FIT / Space: REAL Details: Initial fitting of alphafold models using chimeraX followed by manual rebuilding in COOT and final refinement in ISOLDE and PHENIX | ||||||||||||||||||||||||||||||||||||||||||||||||
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| Refinement | Cross valid method: NONE Stereochemistry target values: GeoStd + Monomer Library + CDL v1.2 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Displacement parameters | Biso mean: 116.18 Å2 | ||||||||||||||||||||||||||||||||||||||||||||||||
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About Yorodumi



Homo sapiens (human)

Bungarus multicinctus (many-banded krait)
United Kingdom, 2items
Citation






PDBj








FIELD EMISSION GUN