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- EMDB-63425: Cryo-EM structure of G6PT1 in complex with phosphate ion -

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Basic information

Entry
Database: EMDB / ID: EMD-63425
TitleCryo-EM structure of G6PT1 in complex with phosphate ion
Map data
Sample
  • Complex: Cryo-EM structure of G6PT1 in complex with phosphate ion
    • Protein or peptide: Glucose-6-phosphate exchanger SLC37A4
  • Ligand: Lauryl Maltose Neopentyl Glycol
  • Ligand: PHOSPHATE ION
Keywordsprotein structure / STRUCTURAL PROTEIN / TRANSPORT PROTEIN
Function / homology
Function and homology information


glucose-6-phosphate transmembrane transporter activity / Glycogen storage disease type Ib (SLC37A4) / glucose 6-phosphate:phosphate antiporter activity / glucose-6-phosphate transport / Gluconeogenesis / phosphate ion transmembrane transport / gluconeogenesis / glucose metabolic process / glucose homeostasis / endoplasmic reticulum membrane ...glucose-6-phosphate transmembrane transporter activity / Glycogen storage disease type Ib (SLC37A4) / glucose 6-phosphate:phosphate antiporter activity / glucose-6-phosphate transport / Gluconeogenesis / phosphate ion transmembrane transport / gluconeogenesis / glucose metabolic process / glucose homeostasis / endoplasmic reticulum membrane / endoplasmic reticulum / membrane
Similarity search - Function
Glycerate/sugar phosphate transporter, conserved site / : / glpT family of transporters signature. / Sugar phosphate transporter / Major facilitator superfamily / Major Facilitator Superfamily / Major facilitator superfamily domain / Major facilitator superfamily (MFS) profile. / MFS transporter superfamily
Similarity search - Domain/homology
Glucose-6-phosphate exchanger SLC37A4
Similarity search - Component
Biological speciesHomo sapiens (human)
Methodsingle particle reconstruction / cryo EM / Resolution: 3.41 Å
AuthorsZhao Y / Chen Q
Funding support China, 1 items
OrganizationGrant numberCountry
National Natural Science Foundation of China (NSFC) China
CitationJournal: To Be Published
Title: Cryo-EM structure of G6PT1 in complex with phosphate ion
Authors: Zhao Y / Chen Q
History
DepositionFeb 12, 2025-
Header (metadata) releaseDec 31, 2025-
Map releaseDec 31, 2025-
UpdateDec 31, 2025-
Current statusDec 31, 2025Processing site: PDBj / Status: Released

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Structure visualization

Supplemental images

emd_63425.png

Downloads & links

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Map

FileDownload / File: emd_63425.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: 0.318
Minimum - Maximum-0.9446631 - 1.4390557
Average (Standard dev.)-0.00020012286 (±0.03410635)
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: #2

Fileemd_63425_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_63425_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 : Cryo-EM structure of G6PT1 in complex with phosphate ion

EntireName: Cryo-EM structure of G6PT1 in complex with phosphate ion
Components
  • Complex: Cryo-EM structure of G6PT1 in complex with phosphate ion
    • Protein or peptide: Glucose-6-phosphate exchanger SLC37A4
  • Ligand: Lauryl Maltose Neopentyl Glycol
  • Ligand: PHOSPHATE ION

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Supramolecule #1: Cryo-EM structure of G6PT1 in complex with phosphate ion

SupramoleculeName: Cryo-EM structure of G6PT1 in complex with phosphate ion
type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1
Source (natural)Organism: Homo sapiens (human)

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Macromolecule #1: Glucose-6-phosphate exchanger SLC37A4

MacromoleculeName: Glucose-6-phosphate exchanger SLC37A4 / type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 46.391809 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: MAAQGYGYYR TVIFSAMFGG YSLYYFNRKT FSFVMPSLVE EIPLDKDDLG FITSSQSAAY AISKFVSGVL SDQMSARWLF SSGLLLVGL VNIFFAWSST VPVFAALWFL NGLAQGLGWP PCGKVLRKWF EPSQFGTWWA ILSTSMNLAG GLGPILATIL A QSYSWRST ...String:
MAAQGYGYYR TVIFSAMFGG YSLYYFNRKT FSFVMPSLVE EIPLDKDDLG FITSSQSAAY AISKFVSGVL SDQMSARWLF SSGLLLVGL VNIFFAWSST VPVFAALWFL NGLAQGLGWP PCGKVLRKWF EPSQFGTWWA ILSTSMNLAG GLGPILATIL A QSYSWRST LALSGALCVV VSFLCLLLIH NEPADVGLRN LDPMPSEGKK GSLKEESTLQ ELLLSPYLWV LSTGYLVVFG VK TCCTDWG QFFLIQEKGQ SALVGSSYMS ALEVGGLVGS IAAGYLSDRA MAKAGLSNYG NPRHGLLLFM MAGMTVSMYL FRV TVTSDS PKLWILVLGA VFGFSSYGPI ALFGVIANES APPNLCGTSH AIVGLMANVG GFLAGLPFST IAKHYSWSTA FWVA EVICA ASTAAFFLLR NIRTKMGRVS KKAE

UniProtKB: Glucose-6-phosphate exchanger SLC37A4

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Macromolecule #2: Lauryl Maltose Neopentyl Glycol

MacromoleculeName: Lauryl Maltose Neopentyl Glycol / type: ligand / ID: 2 / Number of copies: 2 / Formula: LMN
Molecular weightTheoretical: 1.005188 KDa
Chemical component information

ChemComp-AV0:
Lauryl Maltose Neopentyl Glycol

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Macromolecule #3: PHOSPHATE ION

MacromoleculeName: PHOSPHATE ION / type: ligand / ID: 3 / Number of copies: 1 / Formula: PO4
Molecular weightTheoretical: 94.971 Da
Chemical component information

ChemComp-PO4:
PHOSPHATE ION

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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 (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: 3.41 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 61117
Initial angle assignmentType: MAXIMUM LIKELIHOOD
Final angle assignmentType: MAXIMUM LIKELIHOOD

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