Biological Assembly 1  

 3D View: Structure | 1D-3D View | Electron Density | Validation Report | Ligand Interaction | Predict Membrane 

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Biological Assembly 2  

 3D View: Structure | 1D-3D View | Electron Density | Validation Report | Ligand Interaction | Predict Membrane 

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 2 assigned by authors.

Macromolecule Content

• Total Structure Weight: 114.70 kDa 
• Atom Count: 7359 
• Modelled Residue Count: 936 
• Deposited Residue Count: 1036 
• Unique protein chains: 1

4ZWC

Crystal structure of maltose-bound human GLUT3 in the outward-open conformation at 2.6 angstrom

• PDB DOI: 10.2210/pdb4ZWC/pdb

• Classification: TRANSPORT PROTEIN
• Organism(s): Homo sapiens
• Expression System: Spodoptera frugiperda
• Mutation(s): Yes 
• Membrane Protein: Yes  OPMPDBTMMemProtMDmpstruc


• Deposited: 2015-05-19 Released: 2015-07-22 
• Deposition Author(s): Deng, D., Sun, P.C., Yan, C.Y., Yan, N.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.60 Å
• R-Value Free: 0.251 
• R-Value Work: 0.215 
• R-Value Observed: 0.217 

Literature

Molecular basis of ligand recognition and transport by glucose transporters

Deng, D., Sun, P.C., Yan, C.Y., Ke, M., Jiang, X., Xiong, L., Ren, W., Hirata, K., Yamamoto, M., Fan, S., Yan, N.

(2015) Nature 526: 391-396

• PubMed: 26176916 
• DOI: 10.1038/nature14655
• Primary Citation of Related Structures:  
  4ZW9, 4ZWB, 4ZWC


• PubMed Abstract: 
  

The major facilitator superfamily glucose transporters, exemplified by human GLUT1-4, have been central to the study of solute transport. Using lipidic cubic phase crystallization and microfocus X-ray diffraction, we determined the structure of human GLUT3 in complex with D-glucose at 1.5 Å resolution in an outward-occluded conformation. The high-resolution structure allows discrimination of both α- and β-anomers of D-glucose. Two additional structures of GLUT3 bound to the exofacial inhibitor maltose were obtained at 2.6 Å in the outward-open and 2.4 Å in the outward-occluded states. In all three structures, the ligands are predominantly coordinated by polar residues from the carboxy terminal domain. Conformational transition from outward-open to outward-occluded entails a prominent local rearrangement of the extracellular part of transmembrane segment TM7. Comparison of the outward-facing GLUT3 structures with the inward-open GLUT1 provides insights into the alternating access cycle for GLUTs, whereby the C-terminal domain provides the primary substrate-binding site and the amino-terminal domain undergoes rigid-body rotation with respect to the C-terminal domain. Our studies provide an important framework for the mechanistic and kinetic understanding of GLUTs and shed light on structure-guided ligand design.

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Organizational Affiliation: 

Tsinghua-Peking Center for Life Sciences, School of Life Sciences and School of Medicine, Tsinghua University, Beijing 100084, China.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Solute carrier family 2, facilitated glucose transporter member 3	A, B	518	Homo sapiens	Mutation(s): 1  Gene Names: SLC2A3, GLUT3 Membrane Entity: Yes
UniProt & NIH Common Fund Data Resources
Find proteins for P11169 (Homo sapiens) Explore P11169  Go to UniProtKB:  P11169
PHAROS:  P11169 GTEx:  ENSG00000059804

Oligosaccharides

Help

Entity ID: 2
Molecule	Chains	Chain Length	2D Diagram	Glycosylation
alpha-D-glucopyranose-(1-4)-alpha-D-glucopyranose	C, D	2		N/A
Glycosylation Resources
GlyTouCan:  G07411ON GlyCosmos:  G07411ON

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
OLC	E [auth A], F [auth A], G [auth B]	(2R)-2,3-dihydroxypropyl (9Z)-octadec-9-enoate C21 H40 O4 RZRNAYUHWVFMIP-GDCKJWNLSA-N

Biologically Interesting Molecules (External Reference) 1 Unique

Entity ID: 2
ID	Chains	Name	Type/Class	2D Diagram	3D Interactions
PRD_900001	C, D	alpha-maltose	Oligosaccharide / Nutrient		Ligand Interaction

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.60 Å
• R-Value Free: 0.251 
• R-Value Work: 0.215 
• R-Value Observed: 0.217 
• Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 78.109	α = 90
b = 121.88	β = 108.14
c = 96.078	γ = 90

Software Package:

Software Name	Purpose
PHENIX	refinement

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2015-05-19 
• Released Date: 2015-07-22 
Deposition Author(s): Deng, D., Sun, P.C., Yan, C.Y., Yan, N.

Revision History  

• Version 1.0: 2015-07-22
  Type: Initial release
  
• Version 1.1: 2015-07-29
  Changes: Database references
• Version 1.2: 2015-10-21
  Changes: Database references
• Version 1.3: 2020-02-19
  Changes: Data collection, Derived calculations
• Version 2.0: 2020-07-29
  Type: Remediation
  Reason: Carbohydrate remediation
  Changes: Atomic model, Data collection, Derived calculations, Non-polymer description, Structure summary