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- EMDB-61975: Cryo-EM structure of human taurine transporter TauT bound with P4... -

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Basic information

Entry
Database: EMDB / ID: EMD-61975
TitleCryo-EM structure of human taurine transporter TauT bound with P4S in an inward open state
Map data
Sample
  • Complex: Human taurine transporter complex with P4S in inward-open state
    • Protein or peptide: Fragment antigen binding heavy chain
    • Protein or peptide: Fragment antigen binding light chain
    • Protein or peptide: Sodium- and chloride-dependent taurine transporter
  • Ligand: CHLORIDE ION
  • Ligand: piperidine-4-sulfonic acid
KeywordsInhibitor / transport protein / STRUCTURAL PROTEIN/IMMUNE SYSTEM / STRUCTURAL PROTEIN-IMMUNE SYSTEM complex
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 transmembrane transporter activity / Amino acid transport across the plasma membrane / Na+/Cl- dependent neurotransmitter transporters / 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
Sodium- and chloride-dependent taurine transporter
Similarity search - Component
Biological speciesHomo sapiens (human)
Methodsingle particle reconstruction / cryo EM / Resolution: 3.12 Å
AuthorsDu B / Yan K
Funding support China, 1 items
OrganizationGrant numberCountry
National Natural Science Foundation of China (NSFC) China
CitationJournal: To Be Published
Title: Molecular basis of human taurine transporter uptake and inhibition
Authors: Du B / Yan K
History
DepositionOct 16, 2024-
Header (metadata) releaseAug 20, 2025-
Map releaseAug 20, 2025-
UpdateAug 20, 2025-
Current statusAug 20, 2025Processing site: PDBc / Status: Released

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Structure visualization

Supplemental images

emd_61975.png

Downloads & links

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Map

FileDownload / File: emd_61975.map.gz / Format: CCP4 / Size: 64 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
1.07 Å/pix.
x 256 pix.
= 274.432 Å		1.07 Å/pix.
x 256 pix.
= 274.432 Å		1.07 Å/pix.
x 256 pix.
= 274.432 Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 1.072 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.9
Minimum - Maximum-4.3162313 - 5.955765
Average (Standard dev.)-0.0024334723 (±0.096131526)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions256256256
Spacing256256256
CellA=B=C: 274.432 Å
α=β=γ: 90.0 °

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Supplemental data

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Half map: #2

Fileemd_61975_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_61975_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 : Human taurine transporter complex with P4S in inward-open state

EntireName: Human taurine transporter complex with P4S in inward-open state
Components
  • Complex: Human taurine transporter complex with P4S in inward-open state
    • Protein or peptide: Fragment antigen binding heavy chain
    • Protein or peptide: Fragment antigen binding light chain
    • Protein or peptide: Sodium- and chloride-dependent taurine transporter
  • Ligand: CHLORIDE ION
  • Ligand: piperidine-4-sulfonic acid

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Supramolecule #1: Human taurine transporter complex with P4S in inward-open state

SupramoleculeName: Human taurine transporter complex with P4S in inward-open state
type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#3
Source (natural)Organism: Homo sapiens (human)

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Macromolecule #1: Fragment antigen binding heavy chain

MacromoleculeName: Fragment antigen binding heavy chain / type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 13.138654 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString:
EVQLVESGGG LVKPGGSLKL SCAASGFTFS SYAMSWVRQS PEKRLEWVAE ISSGGRYIYY SDTVTGRFTI SRDNARNILH LEMSSLRSE DTAMYYCARG EVRQRGFDYW GQGTTLTVS

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Macromolecule #2: Fragment antigen binding light chain

MacromoleculeName: Fragment antigen binding light chain / type: protein_or_peptide / ID: 2 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 14.920076 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString:
ENVLTQSPAI MSTSPGEKVT MTCRASSSVG SSYLHWYQQK SGASPKLWIY STSNLASGVP ARFSGSGSGT SYSLTISSVE AEDAATYYC QQFSGYPLTF GSGTKLEMGS DEVDAGSHHH HHHHHHHGSV EDYKDDDDK

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Macromolecule #3: Sodium- and chloride-dependent taurine transporter

MacromoleculeName: Sodium- and chloride-dependent taurine transporter / type: protein_or_peptide / ID: 3 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 73.446273 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: MATKEKLQCL KDFHKDILKP SPGKSPGTRP EDEAEGKPPQ REKWSSKIDF VLSVAGGFVG LGNVWRFPYL CYKNGGGAFL IPYFIFLFG SGLPVFFLEI IIGQYTSEGG ITCWEKICPL FSGIGYASVV IVSLLNVYYI VILAWATYYL FQSFQKELPW A HCNHSWNT ...String:
MATKEKLQCL KDFHKDILKP SPGKSPGTRP EDEAEGKPPQ REKWSSKIDF VLSVAGGFVG LGNVWRFPYL CYKNGGGAFL IPYFIFLFG SGLPVFFLEI IIGQYTSEGG ITCWEKICPL FSGIGYASVV IVSLLNVYYI VILAWATYYL FQSFQKELPW A HCNHSWNT PHCMEDTMRK NKSVWITISS TNFTSPVIEF WERNVLSLSP GIDHPGSLKW DLALCLLLVW LVCFFCIWKG VR STGKVVY FTATFPFAML LVLLVRGLTL PGAGAGIKFY LYPDITRLED PQVWIDAGTQ IFFSYAICLG AMTSLGSYNK YHN NVYRDC MLLGCLNSGT SFVSGFAIFS ILGFMAQEQG VDIADVAESG PGLAFIAYPK AVTMMPLPTF WSILFFIMLL LLGL DSQFV EVEGQITSLV DLYPSFLRKG YRREIFIAFV CSISYLLGLT MVTEGGMYVF QLFDYYAASG VCLLWVAFFE CFVIA WIYG GNRFSEDIRD MIGFPPGPWM KYSWAVITPV LCVGCFIFSL VKYVPLTYNK TYVYPNWAIG LGWSLALSSM LCVPLV IVI RLCQTEGPFL VRVKYLLTPR EPNRWAVERE GATPYNSRTV MNGALVKPTH IIVETMMGSD EVDAGSHHHH HHHHHHG SV EDYKDDDDK

UniProtKB: Sodium- and chloride-dependent taurine transporter

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Macromolecule #4: CHLORIDE ION

MacromoleculeName: CHLORIDE ION / type: ligand / ID: 4 / Number of copies: 1 / Formula: CL
Molecular weightTheoretical: 35.453 Da

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Macromolecule #5: piperidine-4-sulfonic acid

MacromoleculeName: piperidine-4-sulfonic acid / type: ligand / ID: 5 / Number of copies: 1 / Formula: A1EBD
Molecular weightTheoretical: 165.211 Da

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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 POLARA 300
Image recordingFilm or detector model: FEI FALCON III (4k x 4k) / Average electron dose: 50.0 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: OTHER / Imaging mode: BRIGHT FIELD / Nominal defocus max: 2.0 µm / Nominal defocus min: 1.0 µm
Experimental equipment
Model: Tecnai Polara / Image courtesy: FEI Company

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Image processing

CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
Startup modelType of model: OTHER
Final reconstructionResolution.type: BY AUTHOR / Resolution: 3.12 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 587727
Initial angle assignmentType: MAXIMUM LIKELIHOOD
Final angle assignmentType: MAXIMUM LIKELIHOOD
FSC plot (resolution estimation)

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