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- EMDB-7299: 3.7 angstrom cryoEM structure of full length human TRPM4 -

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Basic information

Entry
Database: EMDB / ID: EMD-7299
Title3.7 angstrom cryoEM structure of full length human TRPM4
Map data
Sample
  • Complex: Human full length TRPM4
    • Protein or peptide: Transient receptor potential cation channel subfamily M member 4
  • Ligand: SODIUM ION
  • Ligand: CHOLESTEROL HEMISUCCINATE
  • Ligand: 2-acetamido-2-deoxy-beta-D-glucopyranose
KeywordsCryoEM / human full length TRPM7 / MEMBRANE PROTEIN
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 / metal ion transport / membrane depolarization during bundle of His cell action potential / membrane depolarization during Purkinje myocyte cell action potential / negative regulation of bone mineralization / regulation of ventricular cardiac muscle cell action potential ...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 / metal ion transport / membrane depolarization during bundle of His cell action potential / membrane depolarization during Purkinje myocyte cell action potential / negative regulation of bone mineralization / regulation of ventricular cardiac muscle cell action potential / calcium-activated cation channel activity / sodium ion import across plasma membrane / inorganic cation transmembrane transport / dendritic cell chemotaxis / TRP channels / cellular response to ATP / sodium channel activity / monoatomic cation transmembrane transport / regulation of heart rate by cardiac conduction / positive regulation of insulin secretion involved in cellular response to glucose stimulus / protein sumoylation / negative regulation of osteoblast differentiation / positive regulation of fat cell differentiation / positive regulation of heart rate / positive regulation of adipose tissue development / positive regulation of vasoconstriction / calcium-mediated signaling / calcium ion transmembrane transport / calcium channel activity / 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 / endoplasmic reticulum / Golgi apparatus / nucleoplasm / ATP binding / identical protein binding / membrane / plasma membrane
Similarity search - Function
TRPM, SLOG domain / : / SLOG in TRPM / Ion transport domain / Ion transport protein
Similarity search - Domain/homology
Transient receptor potential cation channel subfamily M member 4
Similarity search - Component
Biological speciesMus musculus (house mouse) / Homo sapiens (human)
Methodsingle particle reconstruction / cryo EM / Resolution: 3.7 Å
AuthorsZhang J / Li Z
CitationJournal: 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
DepositionDec 15, 2017-
Header (metadata) releaseOct 31, 2018-
Map releaseDec 19, 2018-
UpdateJun 4, 2025-
Current statusJun 4, 2025Processing site: RCSB / Status: Released

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Structure visualization

Movie
  • Surface view with section colored by density value
  • Surface level: 0.025
  • Imaged by UCSF Chimera
  • Download
  • Surface view colored by cylindrical radius
  • Surface level: 0.025
  • Imaged by UCSF Chimera
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  • Surface view with fitted model
  • Atomic models: PDB-6bwi
  • Surface level: 0.025
  • Imaged by UCSF Chimera
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Movie viewer
Structure viewerEM map:
SurfViewMolmilJmol/JSmol
Supplemental images

emd_7299.png

Downloads & links

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Map

FileDownload / File: emd_7299.map.gz / Format: CCP4 / Size: 64 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
1.23 Å/pix.
x 256 pix.
= 314.88 Å		1.23 Å/pix.
x 256 pix.
= 314.88 Å		1.23 Å/pix.
x 256 pix.
= 314.88 Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 1.23 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.013 / Movie #1: 0.025
Minimum - Maximum-0.13202134 - 0.19472796
Average (Standard dev.)0.00036916824 (±0.0052989936)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions256256256
Spacing256256256
CellA=B=C: 314.88 Å
α=β=γ: 90.0 °

CCP4 map header:

modeImage stored as Reals
Å/pix. X/Y/Z1.231.231.23
M x/y/z256256256
origin x/y/z0.0000.0000.000
length x/y/z314.880314.880314.880
α/β/γ90.00090.00090.000
MAP C/R/S123
start NC/NR/NS000
NC/NR/NS256256256
D min/max/mean-0.1320.1950.000

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Supplemental data

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Sample components

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Entire : Human full length TRPM4

EntireName: Human full length TRPM4
Components
  • Complex: Human full length TRPM4
    • Protein or peptide: Transient receptor potential cation channel subfamily M member 4
  • Ligand: SODIUM ION
  • Ligand: CHOLESTEROL HEMISUCCINATE
  • Ligand: 2-acetamido-2-deoxy-beta-D-glucopyranose

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Supramolecule #1: Human full length TRPM4

SupramoleculeName: Human full length TRPM4 / type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1
Source (natural)Organism: Mus musculus (house mouse)

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Macromolecule #1: Transient receptor potential cation channel subfamily M member 4

MacromoleculeName: Transient receptor potential cation channel subfamily M member 4
type: protein_or_peptide / ID: 1 / Number of copies: 4 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 104.523664 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString: (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK) ...String:
(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK) (UNK)(UNK)(UNK)DEL RLAVAWNRVD IAQSELFRGD IQWRSFHLEA SLMDALLNDR PEFVRLLISH GLSLGHFLTP MR LAQLYSA APSNSLIRNL LDQASHSAGT KAPALKGGAA ELRPPDVGHV LRMLLGKMCA PRYPSGGAWD PHPGQGFGES MYL LSDKAT SPLSLDAGLG QAPWSDLLLW ALLLNRAQMA MYFWEMGSNA VSSALGACLL LRVMARLEPD AEEAARRKDL AFKF EGMGV DLFGECYRSS EVRAARLLLR RCPLWGDATC LQLAMQADAR AFFAQDGVQS LLTQKWWGDM ASTTPIWALV LAFFC PPLI YTRLITFRKS EEEPTREELE FDMDSVINGE GPVGTADPAE KTPLGVPRQS GRPGCCGGRC GGRRCLRRWF HFWGAP VTI FMGNVVSYLL FLLLFSRVLL VDFQPAPPGS LELLLYFWAF TLLCEELRQG LSGGGGSLAS GGPGPGHASL SQRLRLY LA DSWNQCDLVA LTCFLLGVGC RLTPGLYHLG RTVLCIDFMV FTVRLLHIFT VNKQLGPKIV IVSKMMKDVF FFLFFLGV W LVAYGVATEG LLRPRDSDFP SILRRVFYRP YLQIFGQIPQ EDMDVALMEH SNCSSEPGFW AHPPGAQAGT CVSQYANWL VVLLLVIFLL VANILLVNLL IAMFSYTFGK VQGNSDLYWK AQRYRLIREF HSRPALAPPF IVISHLRLLL RQLCRRPRSP QPSSPALEH FRVYLSKEAE RKLLTWESVH KENFLLARAR DKRESDSERL KRTSQKVDLA LKQLGHIREY EQRLKVLE

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Macromolecule #2: SODIUM ION

MacromoleculeName: SODIUM ION / type: ligand / ID: 2 / Number of copies: 5
Molecular weightTheoretical: 22.99 Da

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Macromolecule #3: CHOLESTEROL HEMISUCCINATE

MacromoleculeName: CHOLESTEROL HEMISUCCINATE / type: ligand / ID: 3 / Number of copies: 24 / Formula: Y01
Molecular weightTheoretical: 486.726 Da
Chemical component information

ChemComp-Y01:
CHOLESTEROL HEMISUCCINATE

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Macromolecule #4: 2-acetamido-2-deoxy-beta-D-glucopyranose

MacromoleculeName: 2-acetamido-2-deoxy-beta-D-glucopyranose / type: ligand / ID: 4 / Number of copies: 4 / Formula: NAG
Molecular weightTheoretical: 221.208 Da
Chemical component information

ChemComp-NAG:
2-acetamido-2-deoxy-beta-D-glucopyranose

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Experimental details

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Structure determination

Methodcryo EM
Processingsingle particle reconstruction
Aggregation stateparticle

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Sample preparation

BufferpH: 7.5
VitrificationCryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 20 K / Instrument: FEI VITROBOT MARK I

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Electron microscopy

MicroscopeFEI POLARA 300
Image recordingFilm or detector model: GATAN K2 SUMMIT (4k x 4k) / Average electron dose: 56.0 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD
Experimental equipment
Model: Tecnai Polara / Image courtesy: FEI Company

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Image processing

CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
Startup modelType of model: EMDB MAP
Final reconstructionResolution.type: BY AUTHOR / Resolution: 3.7 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 232930
Initial angle assignmentType: PROJECTION MATCHING
Final angle assignmentType: RANDOM ASSIGNMENT
FSC plot (resolution estimation)

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