+Open data
-Basic information
Entry | Database: PDB / ID: 6bwi | ||||||
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Title | 3.7 angstrom cryoEM structure of full length human TRPM4 | ||||||
Components | Transient receptor potential cation channel subfamily M member 4 | ||||||
Keywords | MEMBRANE PROTEIN / CryoEM / human full length TRPM7 | ||||||
Function / homology | Function and homology information positive regulation of atrial cardiac muscle cell action potential / positive regulation of regulation of vascular associated smooth muscle cell membrane depolarization / sodium channel complex / regulation of T cell cytokine production / membrane depolarization during AV node cell action potential / membrane depolarization during bundle of His cell action potential / membrane depolarization during Purkinje myocyte cell action potential / negative regulation of bone mineralization / ligand-gated calcium channel activity / sodium ion import across plasma membrane ...positive regulation of atrial cardiac muscle cell action potential / positive regulation of regulation of vascular associated smooth muscle cell membrane depolarization / sodium channel complex / regulation of T cell cytokine production / membrane depolarization during AV node cell action potential / membrane depolarization during bundle of His cell action potential / membrane depolarization during Purkinje myocyte cell action potential / negative regulation of bone mineralization / ligand-gated calcium channel activity / sodium ion import across plasma membrane / regulation of ventricular cardiac muscle cell action potential / calcium-activated cation channel activity / inorganic cation transmembrane transport / TRP channels / dendritic cell chemotaxis / sodium channel activity / cellular response to ATP / positive regulation of heart rate / regulation of heart rate by cardiac conduction / positive regulation of insulin secretion involved in cellular response to glucose stimulus / protein sumoylation / positive regulation of fat cell differentiation / negative regulation of osteoblast differentiation / positive regulation of vasoconstriction / positive regulation of adipose tissue development / calcium-mediated signaling / calcium ion transmembrane transport / Sensory perception of sweet, bitter, and umami (glutamate) taste / positive regulation of canonical Wnt signaling pathway / positive regulation of cytosolic calcium ion concentration / protein homotetramerization / adaptive immune response / calmodulin binding / neuronal cell body / positive regulation of cell population proliferation / calcium ion binding / Golgi apparatus / endoplasmic reticulum / nucleoplasm / ATP binding / identical protein binding / membrane / plasma membrane / cytosol Similarity search - Function | ||||||
Biological species | Homo sapiens (human) | ||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.7 Å | ||||||
Authors | Zhang, J. / Li, Z. / Duan, J. / Li, J. / Clapham, D.E. | ||||||
Citation | Journal: Proc Natl Acad Sci U S A / Year: 2018 Title: Structure of full-length human TRPM4. Authors: Jingjing Duan / Zongli Li / Jian Li / Ana Santa-Cruz / Silvia Sanchez-Martinez / Jin Zhang / David E Clapham / Abstract: Transient receptor potential melastatin subfamily member 4 (TRPM4) is a widely distributed, calcium-activated, monovalent-selective cation channel. Mutations in human TRPM4 (hTRPM4) result in ...Transient receptor potential melastatin subfamily member 4 (TRPM4) is a widely distributed, calcium-activated, monovalent-selective cation channel. Mutations in human TRPM4 (hTRPM4) result in progressive familial heart block. Here, we report the electron cryomicroscopy structure of hTRPM4 in a closed, Na-bound, apo state at pH 7.5 to an overall resolution of 3.7 Å. Five partially hydrated sodium ions are proposed to occupy the center of the conduction pore and the entrance to the coiled-coil domain. We identify an upper gate in the selectivity filter and a lower gate at the entrance to the cytoplasmic coiled-coil domain. Intramolecular interactions exist between the TRP domain and the S4-S5 linker, N-terminal domain, and N and C termini. Finally, we identify aromatic interactions via π-π bonds and cation-π bonds, glycosylation at an N-linked extracellular site, a pore-loop disulfide bond, and 24 lipid binding sites. We compare and contrast this structure with other TRP channels and discuss potential mechanisms of regulation and gating of human full-length TRPM4. | ||||||
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 | 6bwi.cif.gz | 542.2 KB | Display | PDBx/mmCIF format |
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PDB format | pdb6bwi.ent.gz | 431.7 KB | Display | PDB format |
PDBx/mmJSON format | 6bwi.json.gz | Tree view | PDBx/mmJSON format | |
Others | Other downloads |
-Validation report
Summary document | 6bwi_validation.pdf.gz | 2 MB | Display | wwPDB validaton report |
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Full document | 6bwi_full_validation.pdf.gz | 2.2 MB | Display | |
Data in XML | 6bwi_validation.xml.gz | 103.2 KB | Display | |
Data in CIF | 6bwi_validation.cif.gz | 150.2 KB | Display | |
Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/bw/6bwi ftp://data.pdbj.org/pub/pdb/validation_reports/bw/6bwi | HTTPS FTP |
-Related structure data
Related structure data | 7299MC 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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-Components
#1: Protein | Mass: 104523.664 Da / Num. of mol.: 4 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Gene: TRPM4, LTRPC4 / Production host: Spodoptera frugiperda (fall armyworm) / References: UniProt: Q8TD43*PLUS #2: Chemical | ChemComp-NA / #3: Chemical | ChemComp-Y01 / #4: Sugar | ChemComp-NAG / Has protein modification | Y | Sequence details | The full sample sequence is MVVPEKEQSWIPKIFKKKTCTTFIVDSTDPGGTLCQCGRPRTAHPAVAMEDAFGAAVVTVWDSDA ...The full sample sequence is MVVPEKEQSW | |
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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: Human full length TRPM4 / Type: COMPLEX / Entity ID: #1 / Source: RECOMBINANT |
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Source (natural) | Organism: Mus musculus (house mouse) |
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 | Instrument: FEI VITROBOT MARK I / Cryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 20 K |
-Electron microscopy imaging
Experimental equipment | Model: Tecnai Polara / Image courtesy: FEI Company |
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Microscopy | Model: FEI POLARA 300 |
Electron gun | Electron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM |
Electron lens | Mode: BRIGHT FIELD |
Image recording | Electron dose: 56 e/Å2 / Film or detector model: GATAN K2 SUMMIT (4k x 4k) |
-Processing
Software | Name: PHENIX / Version: 1.11.1_2575: / Classification: refinement | ||||||||||||||||||||||||
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CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||
3D reconstruction | Resolution: 3.7 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 232930 / Symmetry type: POINT | ||||||||||||||||||||||||
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