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- EMDB-63171: Cryo-EM structure of GAT3 -

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Basic information

Entry
Database: EMDB / ID: EMD-63171
TitleCryo-EM structure of GAT3
Map data
Sample
  • Complex: structure of GAT3
    • Protein or peptide: Sodium- and chloride-dependent GABA transporter 3
  • Ligand: GAMMA-AMINO-BUTANOIC ACID
  • Ligand: CHLORIDE ION
Keywordsprotein structure / STRUCTUAL PROTEIN / STRUCTURAL PROTEIN
Function / homology
Function and homology information


gamma-aminobutyric acid reuptake / Reuptake of GABA / monocarboxylic acid transmembrane transporter activity / monocarboxylic acid transport / Creatine metabolism / taurine:sodium symporter activity / gamma-aminobutyric acid:sodium:chloride symporter activity / SLC-mediated transport of neurotransmitters / amino acid binding / amino acid transport ...gamma-aminobutyric acid reuptake / Reuptake of GABA / monocarboxylic acid transmembrane transporter activity / monocarboxylic acid transport / Creatine metabolism / taurine:sodium symporter activity / gamma-aminobutyric acid:sodium:chloride symporter activity / SLC-mediated transport of neurotransmitters / amino acid binding / amino acid transport / sodium ion transmembrane transport / cell projection / GABA-ergic synapse / presynaptic membrane / postsynaptic membrane / response to xenobiotic stimulus / membrane / plasma membrane
Similarity search - Function
Sodium:neurotransmitter symporter, GABA, GAT-3 / 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 GABA transporter 3
Similarity search - Component
Biological speciesHomo sapiens (human)
Methodsingle particle reconstruction / cryo EM / Resolution: 3.4 Å
AuthorsZhao Y / Xu H
Funding support China, 1 items
OrganizationGrant numberCountry
National Natural Science Foundation of China (NSFC) China
CitationJournal: To Be Published
Title: Transport mechanisms of GAT3
Authors: Zhao Y / Xu H
History
DepositionJan 16, 2025-
Header (metadata) releaseAug 20, 2025-
Map releaseAug 20, 2025-
UpdateAug 20, 2025-
Current statusAug 20, 2025Processing site: PDBj / Status: Released

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Structure visualization

Supplemental images

emd_63171.png

Downloads & links

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Map

FileDownload / File: emd_63171.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.)
0.85 Å/pix.
x 256 pix.
= 217.6 Å		0.85 Å/pix.
x 256 pix.
= 217.6 Å		0.85 Å/pix.
x 256 pix.
= 217.6 Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 0.85 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.186
Minimum - Maximum-0.95559543 - 1.4696534
Average (Standard dev.)-0.00036298533 (±0.03411946)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions256256256
Spacing256256256
CellA=B=C: 217.6 Å
α=β=γ: 90.0 °

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Supplemental data

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Half map: #1

Fileemd_63171_half_map_1.map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Half map: #2

Fileemd_63171_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 : structure of GAT3

EntireName: structure of GAT3
Components
  • Complex: structure of GAT3
    • Protein or peptide: Sodium- and chloride-dependent GABA transporter 3
  • Ligand: GAMMA-AMINO-BUTANOIC ACID
  • Ligand: CHLORIDE ION

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Supramolecule #1: structure of GAT3

SupramoleculeName: structure of GAT3 / type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1
Source (natural)Organism: Homo sapiens (human)

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Macromolecule #1: Sodium- and chloride-dependent GABA transporter 3

MacromoleculeName: Sodium- and chloride-dependent GABA transporter 3 / type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 70.628312 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: MTAEKALPLG NGKAAEEARE SEAPGGGSSS GGAAPARHPR VKRDKAVHER GHWNNKVEFV LSVAGEIIGL GNVWRFPYLC YKNGGGAFL IPYVVFFICC GIPVFFLETA LGQFTSEGGI TCWRKVCPLF EGIGYATQVI EAHLNVYYII ILAWAIFYLS N CFTTELPW ...String:
MTAEKALPLG NGKAAEEARE SEAPGGGSSS GGAAPARHPR VKRDKAVHER GHWNNKVEFV LSVAGEIIGL GNVWRFPYLC YKNGGGAFL IPYVVFFICC GIPVFFLETA LGQFTSEGGI TCWRKVCPLF EGIGYATQVI EAHLNVYYII ILAWAIFYLS N CFTTELPW ATCGHEWNTE NCVEFQKLNV SNYSHVSLQN ATSPVMEFWE HRVLAISDGI EHIGNLRWEL ALCLLAAWTI CY FCIWKGT KSTGKVVYVT ATFPYIMLLI LLIRGVTLPG ASEGIKFYLY PDLSRLSDPQ VWVDAGTQIF FSYAICLGCL TAL GSYNNY NNNCYRDCIM LCCLNSGTSF VAGFAIFSVL GFMAYEQGVP IAEVAESGPG LAFIAYPKAV TMMPLSPLWA TLFF MMLIF LGLDSQFVCV ESLVTAVVDM YPKVFRRGYR RELLILALSV ISYFLGLVML TEGGMYIFQL FDSYAASGMC LLFVA IFEC ICIGWVYGSN RFYDNIEDMI GYRPPSLIKW CWMIMTPGIC AGIFIFFLIK YKPLKYNNIY TYPAWGYGIG WLMALS SML CIPLWICITV WKTEGTLPEK LQKLTTPSTD LKMRGKLGVS PRMVTVNDSD AKLKSDGTIA AITEKETHF

UniProtKB: Sodium- and chloride-dependent GABA transporter 3

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Macromolecule #2: GAMMA-AMINO-BUTANOIC ACID

MacromoleculeName: GAMMA-AMINO-BUTANOIC ACID / type: ligand / ID: 2 / Number of copies: 1 / Formula: ABU
Molecular weightTheoretical: 103.12 Da
Chemical component information

ChemComp-ABU:
GAMMA-AMINO-BUTANOIC ACID

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Macromolecule #3: CHLORIDE ION

MacromoleculeName: CHLORIDE ION / type: ligand / ID: 3 / Number of copies: 1 / Formula: CL
Molecular weightTheoretical: 35.453 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: 8
VitrificationCryogen name: ETHANE

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Electron microscopy

MicroscopeFEI TALOS ARCTICA
Image recordingFilm or detector model: GATAN K3 BIOCONTINUUM (6k x 4k) / Average electron dose: 60.0 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: Talos Arctica / Image courtesy: FEI Company

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Image processing

CTF correctionType: PHASE FLIPPING ONLY
Startup modelType of model: OTHER
Final reconstructionResolution.type: BY AUTHOR / Resolution: 3.4 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 32961
Initial angle assignmentType: MAXIMUM LIKELIHOOD
Final angle assignmentType: MAXIMUM LIKELIHOOD

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