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- PDB-9k7b: Cryo-EM structure of human taurine transporter TauT bound with ta... -

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Basic information

Entry
Database: PDB / ID: 9k7b
TitleCryo-EM structure of human taurine transporter TauT bound with taurine molecules in an inward-open state in the saposin-disc
ComponentsSodium- and chloride-dependent taurine transporter
KeywordsPROTEIN TRANSPORT / Complex
Function / homology
Function and homology information


taurine transmembrane transporter activity / alanine transmembrane transporter activity / taurine:sodium symporter activity / nitrogen compound transport / import across plasma membrane / gamma-aminobutyric acid:sodium:chloride symporter activity / gamma-aminobutyric acid transmembrane transporter activity / gamma-aminobutyric acid import / alanine transport / amino acid:sodium symporter activity ...taurine transmembrane transporter activity / alanine transmembrane transporter activity / taurine:sodium symporter activity / nitrogen compound transport / import across plasma membrane / gamma-aminobutyric acid:sodium:chloride symporter activity / gamma-aminobutyric acid transmembrane transporter activity / gamma-aminobutyric acid import / alanine transport / amino acid:sodium symporter activity / amino acid import across plasma membrane / taurine transmembrane transport / amino acid transmembrane transporter activity / Amino acid transport across the plasma membrane / plasma membrane protein complex / Na+/Cl- dependent neurotransmitter transporters / neurotransmitter transport / microvillus membrane / amino acid transport / transport across blood-brain barrier / sodium ion transmembrane transport / GABA-ergic synapse / cell projection / positive regulation of cell differentiation / modulation of chemical synaptic transmission / 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
CHOLESTEROL / 2-AMINOETHANESULFONIC ACID / Sodium- and chloride-dependent taurine transporter
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.75 Å
AuthorsZhang, H. / Xu, E.H.
Funding support China, 1items
OrganizationGrant numberCountry
National Natural Science Foundation of China (NSFC) China
CitationJournal: Cell Res. / Year: 2025
Title: Cryo-EM structure of human taurine transporter TauT bound with taurine molecules in an inward-open state in the saposin-disc
Authors: Zhang, H. / Xu, E.H.
History
DepositionOct 23, 2024Deposition site: PDBJ / Processing site: PDBC
Revision 1.0Feb 26, 2025Provider: repository / Type: Initial release
Revision 1.0Feb 26, 2025Data content type: EM metadata / Data content type: EM metadata / Provider: repository / Type: Initial release
Revision 1.0Feb 26, 2025Data content type: FSC / Data content type: FSC / Provider: repository / Type: Initial release
Revision 1.0Feb 26, 2025Data content type: Half map / Part number: 1 / Data content type: Half map / Provider: repository / Type: Initial release
Revision 1.0Feb 26, 2025Data content type: Half map / Part number: 2 / Data content type: Half map / Provider: repository / Type: Initial release
Revision 1.0Feb 26, 2025Data content type: Image / Data content type: Image / Provider: repository / Type: Initial release
Revision 1.0Feb 26, 2025Data content type: Primary map / Data content type: Primary map / Provider: repository / Type: Initial release

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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)73,70312
Polymers71,2111
Non-polymers2,49211
Water34219
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 / Solute carrier family 6 member 6


Mass: 71211.000 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, 30 molecules

#2: Chemical
ChemComp-TAU / 2-AMINOETHANESULFONIC ACID


Mass: 125.147 Da / Num. of mol.: 4 / Source method: obtained synthetically / Formula: C2H7NO3S / Feature type: SUBJECT OF INVESTIGATION
#3: Chemical ChemComp-NA / SODIUM ION


Mass: 22.990 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: Na
#4: Chemical ChemComp-CL / CHLORIDE ION


Mass: 35.453 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: Cl
#5: Chemical
ChemComp-CLR / CHOLESTEROL


Mass: 386.654 Da / Num. of mol.: 5 / Source method: obtained synthetically / Formula: C27H46O
#6: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 19 / 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: Sodium- and chloride-dependent taurine transporter / Type: COMPLEX / Entity ID: #1 / Source: RECOMBINANT
Source (natural)Organism: Homo sapiens (human)
Source (recombinant)Organism: Homo sapiens (human)
Buffer solutionpH: 7.5
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: TFS KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: SPOT SCAN
Electron lensMode: DIFFRACTION / Nominal defocus max: 3000 nm / Nominal defocus min: 1000 nm
Image recordingElectron dose: 50 e/Å2 / Film or detector model: FEI FALCON IV (4k x 4k)

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Processing

CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
3D reconstructionResolution: 2.75 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 129662 / Symmetry type: POINT

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