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- PDB-6w8n: Structure of a trans-membrane protein -

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Basic information

Entry
Database: PDB / ID: 6w8n
TitleStructure of a trans-membrane protein
ComponentsEndosomal/lysosomal potassium channel TMEM175
KeywordsMEMBRANE PROTEIN / Channel
Function / homology
Function and homology information


lysosomal lumen pH elevation / phagosome-lysosome fusion / regulation of lysosomal lumen pH / potassium ion leak channel activity / proton channel activity / arachidonate binding / potassium channel activity / potassium ion transmembrane transport / proton transmembrane transport / neuron cellular homeostasis ...lysosomal lumen pH elevation / phagosome-lysosome fusion / regulation of lysosomal lumen pH / potassium ion leak channel activity / proton channel activity / arachidonate binding / potassium channel activity / potassium ion transmembrane transport / proton transmembrane transport / neuron cellular homeostasis / lysosome / endosome membrane / endosome / lysosomal membrane
Similarity search - Function
Endosomal/lysomomal potassium channel TMEM175 / Endosomal/lysosomal potassium channel TMEM175
Similarity search - Domain/homology
Endosomal/lysosomal proton channel TMEM175
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.2 Å
AuthorsShen, C. / Fu, T.M. / Wang, L.F. / Rawson, S. / Wu, H.
CitationJournal: To Be Published
Title: Structure of a trans-membrane protein
Authors: Shen, C. / Fu, T.M. / Wang, L.F. / Rawson, S. / Xia, S. / Wu, H.
History
DepositionMar 20, 2020Deposition site: RCSB / Processing site: RCSB
Revision 1.0Aug 4, 2021Provider: repository / Type: Initial release
Revision 1.1Oct 30, 2024Group: Data collection / Database references / Structure summary
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / database_2 / em_admin / pdbx_entry_details / pdbx_modification_feature
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession / _em_admin.last_update

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Assembly

Deposited unit
A: Endosomal/lysosomal potassium channel TMEM175
B: Endosomal/lysosomal potassium channel TMEM175


Theoretical massNumber of molelcules
Total (without water)111,3342
Polymers111,3342
Non-polymers00
Water00
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: gel filtration
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

#1: Protein Endosomal/lysosomal potassium channel TMEM175 / Transmembrane protein 175 / hTMEM175


Mass: 55667.219 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: TMEM175 / Production host: Homo sapiens (human) / References: UniProt: Q9BSA9
Has protein modificationY

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Experimental details

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Experiment

ExperimentMethod: ELECTRON MICROSCOPY
EM experimentAggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction

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Sample preparation

ComponentName: Dimer of a membrane protein / Type: COMPLEX / Entity ID: all / Source: RECOMBINANT
Source (natural)Organism: Homo sapiens (human)
Source (recombinant)Organism: Homo sapiens (human)
Buffer solutionpH: 6.8
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
VitrificationCryogen name: ETHANE

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: FEI TITAN KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELD
Image recordingElectron dose: 67.7 e/Å2 / Film or detector model: GATAN K3 (6k x 4k)

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Processing

SoftwareName: PHENIX / Version: 1.17.1_3660: / Classification: refinement
CTF correctionType: NONE
3D reconstructionResolution: 3.2 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 122130 / Symmetry type: POINT
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.0076304
ELECTRON MICROSCOPYf_angle_d0.7268603
ELECTRON MICROSCOPYf_dihedral_angle_d14.992846
ELECTRON MICROSCOPYf_chiral_restr0.0481075
ELECTRON MICROSCOPYf_plane_restr0.0051044

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