The structure of human glucokinase E339K mutation

Experimental Data Snapshot

  • Resolution: 2.20 Å
  • R-Value Free: 0.250 
  • R-Value Work: 0.213 
  • R-Value Observed: 0.214 

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Crystal structure of E339K mutated human glucokinase reveals changes in the ATP binding site.

Liu, Q.Shen, Y.Liu, S.Weng, J.Liu, J.

(2011) FEBS Lett 585: 1175-1179

  • DOI: https://doi.org/10.1016/j.febslet.2011.03.026
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    Human glucokinase (GK) plays an important role in glucose homeostasis. An E339K mutation in GK was recently found to be associated with hyperglycemia. It showed lower enzyme activity and impaired protein stability compared to the wild-type enzyme. Here, we present the crystal structure of E339K GK in complex with glucose. This mutation results in a conformational change of His416, spatially interfering with adenosine-triphosphate (ATP) binding. Furthermore, Ser411 at the ATP binding site is phosphorylated and then hydrogen bonded with Thr82, physically blocking the ATP binding. These findings provide structural basis for the reduced activity of this mutant.

  • Organizational Affiliation

    State Key Laboratory of Respiratory Diseases, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou 510530, China.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Glucokinase470Homo sapiensMutation(s): 1 
Gene Names: GCK
UniProt & NIH Common Fund Data Resources
Find proteins for P35557 (Homo sapiens)
Explore P35557 
Go to UniProtKB:  P35557
PHAROS:  P35557
GTEx:  ENSG00000106633 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP35557
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 2.20 Å
  • R-Value Free: 0.250 
  • R-Value Work: 0.213 
  • R-Value Observed: 0.214 
  • Space Group: P 43 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 80.74α = 90
b = 80.74β = 90
c = 178.41γ = 90
Software Package:
Software NamePurpose
MAR345data collection
MOSFLMdata reduction
SCALAdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2011-06-01
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2017-11-08
    Changes: Refinement description
  • Version 1.3: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Data collection, Database references, Derived calculations, Structure summary
  • Version 1.4: 2023-11-01
    Changes: Data collection, Database references, Refinement description, Structure summary