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- PDB-9j7n: Cryo-EM structure of TauT -

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Basic information

Entry
Database: PDB / ID: 9j7n
TitleCryo-EM structure of TauT
ComponentsSodium- and chloride-dependent taurine transporter
KeywordsSTRUCTURAL PROTEIN / protein structure / STRUCTUAL PROTEIN
Function / homology
Function and homology information


taurine transmembrane transporter activity / alanine transmembrane transporter activity / gamma-aminobutyric acid transmembrane transporter activity / taurine:sodium symporter activity / import across plasma membrane / gamma-aminobutyric acid import / gamma-aminobutyric acid:sodium:chloride symporter activity / alanine transport / amino acid:sodium symporter activity / amino acid import across plasma membrane ...taurine transmembrane transporter activity / alanine transmembrane transporter activity / gamma-aminobutyric acid transmembrane transporter activity / taurine:sodium symporter activity / import across plasma membrane / gamma-aminobutyric acid import / gamma-aminobutyric acid:sodium:chloride symporter activity / alanine transport / amino acid:sodium symporter activity / amino acid import across plasma membrane / taurine transmembrane transport / Amino acid transport across the plasma membrane / amino acid transmembrane transporter activity / SLC-mediated transport of neurotransmitters / neurotransmitter transport / microvillus membrane / amino acid transport / transport across blood-brain barrier / sodium ion transmembrane transport / cell projection / positive regulation of cell differentiation / modulation of chemical synaptic transmission / GABA-ergic synapse / basolateral plasma membrane / postsynaptic membrane / apical plasma membrane / neuronal cell body / dendrite / membrane / plasma membrane
Similarity search - Function
Sodium:neurotransmitter symporter, taurine / Sodium:neurotransmitter symporter family signature 2. / Sodium:neurotransmitter symporter family signature 1. / Sodium:neurotransmitter symporter / Sodium:neurotransmitter symporter superfamily / Sodium:neurotransmitter symporter family / Sodium:neurotransmitter symporter family profile.
Similarity search - Domain/homology
BETA-ALANINE / CHOLESTEROL / HEXADECANE / Sodium- and chloride-dependent taurine transporter
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.14 Å
AuthorsZhao, Y. / Xu, H.
Funding support China, 1items
OrganizationGrant numberCountry
National Natural Science Foundation of China (NSFC) China
CitationJournal: Cell Discov / Year: 2025
Title: Structural characterization reveals substrate recognition by the taurine transporter TauT.
Authors: Hao Xu / Qinru Bai / Han Wang / Jun Zhao / Aiping Guo / Renjie Li / Qihao Chen / Yiqing Wei / Na Li / Zhuo Huang / Yan Zhao /
History
DepositionAug 19, 2024Deposition site: PDBJ / Processing site: PDBC
Revision 1.0Apr 2, 2025Provider: repository / Type: Initial release
Revision 1.0Apr 2, 2025Data content type: EM metadata / Data content type: EM metadata / Provider: repository / Type: Initial release
Revision 1.0Apr 2, 2025Data content type: Half map / Part number: 1 / Data content type: Half map / Provider: repository / Type: Initial release
Revision 1.0Apr 2, 2025Data content type: Half map / Part number: 2 / Data content type: Half map / Provider: repository / Type: Initial release
Revision 1.0Apr 2, 2025Data content type: Image / Data content type: Image / Provider: repository / Type: Initial release
Revision 1.0Apr 2, 2025Data content type: Primary map / Data content type: Primary map / Provider: repository / Type: Initial release
Revision 1.1May 14, 2025Group: Data collection / Database references / Category: citation / citation_author / em_admin
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Revision 1.2Jul 2, 2025Group: Data collection / Category: em_admin / em_software / Item: _em_admin.last_update / _em_software.name
Revision 1.1Jul 2, 2025Data content type: EM metadata / Data content type: EM metadata / EM metadata / Group: Data processing / Experimental summary / Data content type: EM metadata / EM metadata / Category: em_admin / em_software / Data content type: EM metadata / EM metadata / Item: _em_admin.last_update / _em_software.name

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
A: Sodium- and chloride-dependent taurine transporter
hetero molecules


Theoretical massNumber of molelcules
Total (without water)72,59113
Polymers69,8821
Non-polymers2,70912
Water905
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: electron microscopy, not applicable
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

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Protein , 1 types, 1 molecules A

#1: Protein Sodium- and chloride-dependent taurine transporter / TauT / Solute carrier family 6 member 6


Mass: 69881.633 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: SLC6A6 / Production host: Homo sapiens (human) / References: UniProt: P31641

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Non-polymers , 5 types, 17 molecules

#2: Chemical ChemComp-BAL / BETA-ALANINE


Type: peptide-like / Mass: 89.093 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C3H7NO2 / Feature type: SUBJECT OF INVESTIGATION
#3: Chemical
ChemComp-R16 / HEXADECANE


Mass: 226.441 Da / Num. of mol.: 8 / Source method: obtained synthetically / Formula: C16H34 / Feature type: SUBJECT OF INVESTIGATION
#4: Chemical ChemComp-CLR / CHOLESTEROL


Mass: 386.654 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: C27H46O / Feature type: SUBJECT OF INVESTIGATION
#5: Chemical ChemComp-CL / CHLORIDE ION


Mass: 35.453 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: Cl / Feature type: SUBJECT OF INVESTIGATION
#6: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 5 / Source method: isolated from a natural source / Formula: H2O

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Details

Has ligand of interestY
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: structure of TauT / Type: COMPLEX / Entity ID: #1 / Source: RECOMBINANT
Molecular weightExperimental value: NO
Source (natural)Organism: Homo sapiens (human)
Source (recombinant)Organism: Homo sapiens (human)
Buffer solutionpH: 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: OTHER
Electron lensMode: BRIGHT FIELD / Nominal defocus max: 2000 nm / Nominal defocus min: 1000 nm
Image recordingElectron dose: 60 e/Å2 / Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k)

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Processing

EM softwareName: PHENIX / Category: model refinement
CTF correctionType: PHASE FLIPPING ONLY
3D reconstructionResolution: 3.14 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 66563 / Symmetry type: POINT
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.0044695
ELECTRON MICROSCOPYf_angle_d0.6426360
ELECTRON MICROSCOPYf_dihedral_angle_d8.078719
ELECTRON MICROSCOPYf_chiral_restr0.04694
ELECTRON MICROSCOPYf_plane_restr0.005749

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