3F9M

Human pancreatic glucokinase in complex with glucose and activator showing a mobile flap


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.5 Å
  • R-Value Free: 0.222 
  • R-Value Work: 0.190 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

The active conformation of human glucokinase is not altered by allosteric activators

Petit, P.Antoine, M.Ferry, G.Boutin, J.A.Lagarde, A.Gluais, L.Vincentelli, R.Vuillard, L.

(2011) Acta Crystallogr.,Sect.D 67: 929-935

  • DOI: 10.1107/S0907444911036729
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Glucokinase (GK) catalyses the formation of glucose 6-phosphate from glucose and ATP. A specific feature of GK amongst hexokinases is that it can cycle between active and inactive conformations as a function of glucose concentration, resulting in a u ...

    Glucokinase (GK) catalyses the formation of glucose 6-phosphate from glucose and ATP. A specific feature of GK amongst hexokinases is that it can cycle between active and inactive conformations as a function of glucose concentration, resulting in a unique positive kinetic cooperativity with glucose, which turns GK into a unique key sensor of glucose metabolism, notably in the pancreas. GK is a target of antidiabetic drugs aimed at the activation of GK activity, leading to insulin secretion. Here, the first structures of a GK-glucose complex without activator, of GK-glucose-AMP-PNP and of GK-glucose-AMP-PNP with a bound activator are reported. All these structures are extremely similar, thus demonstrating that binding of GK activators does not result in conformational changes of the active protein but in stabilization of the active form of GK.


    Organizational Affiliation

    BioXtal, PX Unit, c/o AFMB, UMR 6098, Case 932, 163 Avenue de Luminy, 13288 Marseille CEDEX 09, France.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Glucokinase
A
470Homo sapiensGene Names: GCK
EC: 2.7.1.2
Find proteins for P35557 (Homo sapiens)
Go to Gene View: GCK
Go to UniProtKB:  P35557
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
MRK
Query on MRK

Download SDF File 
Download CCD File 
A
2-AMINO-4-FLUORO-5-[(1-METHYL-1H-IMIDAZOL-2-YL)SULFANYL]-N-(1,3-THIAZOL-2-YL)BENZAMIDE
C14 H12 F N5 O S2
YUCYMQBDBXVNCE-UHFFFAOYSA-N
 Ligand Interaction
GLC
Query on GLC

Download SDF File 
Download CCD File 
A
ALPHA-D-GLUCOSE
C6 H12 O6
WQZGKKKJIJFFOK-DVKNGEFBSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
MRKEC50: 67.1 nM (99) BINDINGDB
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.5 Å
  • R-Value Free: 0.222 
  • R-Value Work: 0.190 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 65.700α = 90.00
b = 81.200β = 90.00
c = 85.600γ = 90.00
Software Package:
Software NamePurpose
REFMACrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2008-12-02
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance
  • Version 1.2: 2011-11-09
    Type: Database references
  • Version 1.3: 2012-04-25
    Type: Database references