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- EMDB-36041: ion channel -

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Basic information

Entry
Database: EMDB / ID: EMD-36041
Titleion channel
Map data
Sample
  • Complex: ion channel complex
    • Protein or peptide: ion channel
    • Protein or peptide: ILE-ALA-ALA-ILE-HIS-ASN-ALA-ARG-ARG-LYS-LYS-ARG-GLU-ALA-ALA-ALA-ALA-HIS-LYS-ALA
  • Ligand: water
Keywordsion channel / TRANSPORT PROTEIN
Biological speciesHomo sapiens (human)
Methodsingle particle reconstruction / cryo EM / Resolution: 3.3 Å
AuthorsChen HW / Jiang DH
Funding support China, 1 items
OrganizationGrant numberCountry
National Natural Science Foundation of China (NSFC)31971134 China
CitationJournal: To Be Published
Title: ion channel
Authors: Chen HW / Jiang DH
History
DepositionApr 27, 2023-
Header (metadata) releaseMay 1, 2024-
Map releaseMay 1, 2024-
UpdateMay 1, 2024-
Current statusMay 1, 2024Processing site: PDBj / Status: Released

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Structure visualization

Supplemental images

emd_36041.png

Downloads & links

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Map

FileDownload / File: emd_36041.map.gz / Format: CCP4 / Size: 64 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Voxel sizeX=Y=Z: 1.04 Å
Density
Contour LevelBy AUTHOR: 0.509
Minimum - Maximum-2.8521066 - 3.6245275
Average (Standard dev.)-0.00028983993 (±0.07871888)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions256256256
Spacing256256256
CellA=B=C: 266.24 Å
α=β=γ: 90.0 °

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Supplemental data

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Half map: #2

Fileemd_36041_half_map_1.map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Half map: #1

Fileemd_36041_half_map_2.map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Sample components

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Entire : ion channel complex

EntireName: ion channel complex
Components
  • Complex: ion channel complex
    • Protein or peptide: ion channel
    • Protein or peptide: ILE-ALA-ALA-ILE-HIS-ASN-ALA-ARG-ARG-LYS-LYS-ARG-GLU-ALA-ALA-ALA-ALA-HIS-LYS-ALA
  • Ligand: water

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Supramolecule #1: ion channel complex

SupramoleculeName: ion channel complex / type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#2
Source (natural)Organism: Homo sapiens (human)

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Macromolecule #1: ion channel

MacromoleculeName: ion channel / type: protein_or_peptide / ID: 1 / Number of copies: 4 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 91.684469 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: MIAAIHNARR KKREAAAAHK AQHRTAENSM DSLEDSTHET DAGERAQAGS TKLAWTDVVA PPPRKVVFWL PHQRKVFDFY ASQGVQYFT AFLIVSNFIF NCAEKEWDPY TDQLYQGLWR WGEFAFNTMF LIELLINFYG IAFCFWRYNW AWNTFDLVVV A IGTLTMAE ...String:
MIAAIHNARR KKREAAAAHK AQHRTAENSM DSLEDSTHET DAGERAQAGS TKLAWTDVVA PPPRKVVFWL PHQRKVFDFY ASQGVQYFT AFLIVSNFIF NCAEKEWDPY TDQLYQGLWR WGEFAFNTMF LIELLINFYG IAFCFWRYNW AWNTFDLVVV A IGTLTMAE AIGGNFMPPS MALIRNLRAF RIFRLFKRIK SLNKIIVSLG KAIPGVANAF VIMVIIMCIY AILGVEFYHM TG SDGTYVT YNDNVKRGLC TGDEVELGQC SLNQTVSSET ARGYTYGEEY YGTFFRALYT LFQVLTGESW SEAVARPAVF ESH YDSFGP VLFYVSFIII CQIVLINVVV AVLLDKMVEE DDSEDPEKQT VAEKLSEMLS QEHAQLREIF RTWDEDNSGT ISIK EWRKA VKSMGYRGPI DVLDQIFASM DKDHSGELDY AEIDRMLSPT AARERRSSTH ANPKRSVKEE VVAMRAEFTD HVARL ETQI AALVLELQLQ RKPCGAEAPA PAHSRLAHDS DGAPTEPPPP AAPDHHHLED DEDTTQRVAA ALEVLFQGPS KGEELF TGV VPILVELDGD VNGHKFSVRG EGEGDATNGK LTLKFICTTG KLPVPWPTLV TTLTYGVQCF SRYPDHMKRH DFFKSAM PE GYVQERTISF KDDGTYKTRA EVKFEGDTLV NRIELKGIDF KEDGNILGHK LEYNFNSHNV YITADKQKNG IKANFKIR H NVEDGSVQLA DHYQQNTPIG DGPVLLPDNH YLSTQSVLSK DPNEKRDHMV LLEFVTAAGI THGMDEWSHP QFEKGGGSG GGSGGSAWSH PQFEK

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Macromolecule #2: ILE-ALA-ALA-ILE-HIS-ASN-ALA-ARG-ARG-LYS-LYS-ARG-GLU-ALA-ALA-ALA-A...

MacromoleculeName: ILE-ALA-ALA-ILE-HIS-ASN-ALA-ARG-ARG-LYS-LYS-ARG-GLU-ALA-ALA-ALA-ALA-HIS-LYS-ALA
type: protein_or_peptide / ID: 2 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 2.191584 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString:
IAAIHNARRK KREAAAAHKA

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Macromolecule #3: water

MacromoleculeName: water / type: ligand / ID: 3 / Number of copies: 1 / Formula: HOH
Molecular weightTheoretical: 18.015 Da
Chemical component information

ChemComp-HOH:
WATER / Water

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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

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELDBright-field microscopy / Nominal defocus max: 2.5 µm / Nominal defocus min: 1.2 µm
Image recordingFilm or detector model: GATAN K2 SUMMIT (4k x 4k) / Average electron dose: 60.0 e/Å2
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

Startup modelType of model: OTHER
Initial angle assignmentType: RANDOM ASSIGNMENT
Final angle assignmentType: MAXIMUM LIKELIHOOD
Final reconstructionResolution.type: BY AUTHOR / Resolution: 3.3 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 59377

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