Crystal structure of exofacial state human glucose transporter GLUT3

Experimental Data Snapshot

  • Resolution: 2.10 Å
  • R-Value Free: 0.220 
  • R-Value Work: 0.177 
  • R-Value Observed: 0.179 

Starting Model: experimental
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Molecular basis for inhibiting human glucose transporters by exofacial inhibitors.

Wang, N.Zhang, S.Yuan, Y.Xu, H.Defossa, E.Matter, H.Besenius, M.Derdau, V.Dreyer, M.Halland, N.He, K.H.Petry, S.Podeschwa, M.Tennagels, N.Jiang, X.Yan, N.

(2022) Nat Commun 13: 2632-2632

  • DOI: https://doi.org/10.1038/s41467-022-30326-3
  • Primary Citation of Related Structures:  
    7SPS, 7SPT

  • PubMed Abstract: 

    Human glucose transporters (GLUTs) are responsible for cellular uptake of hexoses. Elevated expression of GLUTs, particularly GLUT1 and GLUT3, is required to fuel the hyperproliferation of cancer cells, making GLUT inhibitors potential anticancer therapeutics. Meanwhile, GLUT inhibitor-conjugated insulin is being explored to mitigate the hypoglycemia side effect of insulin therapy in type 1 diabetes. Reasoning that exofacial inhibitors of GLUT1/3 may be favored for therapeutic applications, we report here the engineering of a GLUT3 variant, designated GLUT3exo, that can be probed for screening and validating exofacial inhibitors. We identify an exofacial GLUT3 inhibitor SA47 and elucidate its mode of action by a 2.3 Å resolution crystal structure of SA47-bound GLUT3. Our studies serve as a framework for the discovery of GLUTs exofacial inhibitors for therapeutic development.

  • Organizational Affiliation

    State Key Laboratory of Membrane Biology, Beijing Advanced Innovation Center for Structural Biology, Tsinghua-Peking Joint Center for Life Sciences, School of Life Sciences, Tsinghua University, Beijing, 100084, China.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Solute carrier family 2, facilitated glucose transporter member 3523Homo sapiensMutation(s): 3 
Gene Names: SLC2A3GLUT3
Membrane Entity: Yes 
UniProt & NIH Common Fund Data Resources
Find proteins for P11169 (Homo sapiens)
Explore P11169 
Go to UniProtKB:  P11169
GTEx:  ENSG00000059804 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP11169
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 2.10 Å
  • R-Value Free: 0.220 
  • R-Value Work: 0.177 
  • R-Value Observed: 0.179 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 48.231α = 90
b = 118.43β = 103.16
c = 53.728γ = 90
Software Package:
Software NamePurpose
PDB_EXTRACTdata extraction
XDSdata reduction
XSCALEdata scaling

Structure Validation

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Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
National Science Foundation (NSF, China)China31630017
National Science Foundation (NSF, China)China81861138009
National Science Foundation (NSF, China)China31611130036

Revision History  (Full details and data files)

  • Version 1.0: 2022-05-18
    Type: Initial release
  • Version 1.1: 2022-05-25
    Changes: Database references
  • Version 1.2: 2023-10-18
    Changes: Data collection, Refinement description