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- PDB-9jcv: Cryo-EM structure of human TauT in the apo state, determined in a... -

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Basic information

Entry
Database: PDB / ID: 9jcv
TitleCryo-EM structure of human TauT in the apo state, determined in an inward-facing open conformation
ComponentsSodium- and chloride-dependent taurine transporter
KeywordsTRANSPORT PROTEIN / Human TauT / Taurine transpoter / inward- facing open conformation
Function / homology
Function and homology information


taurine transmembrane transporter activity / taurine:sodium symporter activity / alanine transmembrane transporter activity / nitrogen compound transport / gamma-aminobutyric acid:sodium:chloride symporter activity / import across plasma membrane / gamma-aminobutyric acid transmembrane transporter activity / gamma-aminobutyric acid import / alanine transport / amino acid:sodium symporter activity ...taurine transmembrane transporter activity / taurine:sodium symporter activity / alanine transmembrane transporter activity / nitrogen compound transport / gamma-aminobutyric acid:sodium:chloride symporter activity / import across plasma membrane / 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
Sodium- and chloride-dependent taurine transporter
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.41 Å
AuthorsQu, Q. / Chao, Y. / Zhou, Z.
Funding support China, 1items
OrganizationGrant numberCountry
National Natural Science Foundation of China (NSFC)32171194 China
CitationJournal: Cell Res / Year: 2025
Title: Transport and inhibition mechanism for human TauT-mediated taurine uptake.
Authors: Yulin Chao / Zixuan Zhou / Hao Xia / Chuanhui Yang / Tingting Li / Yi-Quan Tang / Yilai Shu / Qian Ba / Jiaxu Hong / Dianfan Li / Qianhui Qu /
History
DepositionAug 30, 2024Deposition site: PDBJ / Processing site: PDBC
Revision 1.0Mar 19, 2025Provider: 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)69,1955
Polymers68,4961
Non-polymers6994
Water00
1


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

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Components

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


Mass: 68495.992 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: SLC6A6 / Cell line (production host): HEK293F / Production host: Homo sapiens (human) / References: UniProt: P31641
#2: Sugar ChemComp-NAG / 2-acetamido-2-deoxy-beta-D-glucopyranose / N-acetyl-beta-D-glucosamine / 2-acetamido-2-deoxy-beta-D-glucose / 2-acetamido-2-deoxy-D-glucose / 2-acetamido-2-deoxy-glucose / N-ACETYL-D-GLUCOSAMINE


Type: D-saccharide, beta linking / Mass: 221.208 Da / Num. of mol.: 3 / Source method: obtained synthetically / Formula: C8H15NO6 / Feature type: SUBJECT OF INVESTIGATION
IdentifierTypeProgram
DGlcpNAcbCONDENSED IUPAC CARBOHYDRATE SYMBOLGMML 1.0
N-acetyl-b-D-glucopyranosamineCOMMON NAMEGMML 1.0
b-D-GlcpNAcIUPAC CARBOHYDRATE SYMBOLPDB-CARE 1.0
GlcNAcSNFG CARBOHYDRATE SYMBOLGMML 1.0
#3: Chemical ChemComp-CL / CHLORIDE ION


Mass: 35.453 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: Cl / Feature type: SUBJECT OF INVESTIGATION
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: 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
Specimen supportGrid material: GOLD / Grid mesh size: 200 divisions/in. / Grid type: Quantifoil R1.2/1.3
VitrificationCryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 277.15 K

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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: FLOOD BEAM
Electron lensMode: BRIGHT FIELD / Nominal defocus max: 2000 nm / Nominal defocus min: 1500 nm / Cs: 2.7 mm
Image recordingElectron dose: 50 e/Å2 / Film or detector model: FEI FALCON IV (4k x 4k)

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Processing

EM softwareName: PHENIX / Version: 1.19.2_4158: / Category: model refinement
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
3D reconstructionResolution: 3.41 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 240402 / Symmetry type: POINT
Atomic model buildingProtocol: RIGID BODY FIT / Space: REAL
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.0034243
ELECTRON MICROSCOPYf_angle_d0.5745786
ELECTRON MICROSCOPYf_dihedral_angle_d3.804572
ELECTRON MICROSCOPYf_chiral_restr0.043647
ELECTRON MICROSCOPYf_plane_restr0.004700

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