4BB9

Crystal structure of glucokinase regulatory protein complexed to fructose-1-phosphate


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.47 Å
  • R-Value Free: 0.177 
  • R-Value Work: 0.160 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Crystal Structure of Glucokinase Regulatory Protein.

Pautsch, A.Stadler, N.Loehle, A.Rist, W.Berg, A.Glocker, L.Nar, H.Reinert, D.Lenter, M.Heckel, A.Schnapp, G.Kauschke, S.G.

(2013) Biochemistry 52: 3523

  • DOI: 10.1021/bi4000782
  • Primary Citation of Related Structures:  4BBA

  • PubMed Abstract: 
  • Glucokinase (GK) plays a major role in the regulation of blood glucose homeostasis in both the liver and the pancreas. In the liver, GK is controlled by the GK regulatory protein (GKRP). GKRP in turn is activated by fructose 6-phosphate (F6P) and ina ...

    Glucokinase (GK) plays a major role in the regulation of blood glucose homeostasis in both the liver and the pancreas. In the liver, GK is controlled by the GK regulatory protein (GKRP). GKRP in turn is activated by fructose 6-phosphate (F6P) and inactivated by fructose 1-phosphate (F1P). Disrupting the GK-GKRP complex increases the activity of GK in the cytosol and is considered an attractive concept for the regulation of blood glucose. We have determined the crystal structure of GKRP in its inactive F1P-bound form. The binding site for F1P is located deeply buried at a domain interface, and H-D exchange experiments confirmed that F1P and F6P compete for this site. The structure of the inactive GKRP-F1P complex provides a starting point for understanding the mechanism of fructose phosphate-dependent GK regulation at an atomic level.


    Organizational Affiliation

    Departments of Lead Identification and Optimization Support, ‡CardioMetabolic Diseases Research, §CNS Diseases Research, ∥Drug Discovery Support, ⊥BP Process Science, and @Medicinal Chemistry, Boehringer Ingelheim Pharma GmbH & Company KG , Biberach an der Riss, Germany.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
GLUCOKINASE REGULATORY PROTEIN
A
633Homo sapiensGene Names: GCKR
Find proteins for Q14397 (Homo sapiens)
Go to Gene View: GCKR
Go to UniProtKB:  Q14397
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CA
Query on CA

Download SDF File 
Download CCD File 
A
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
F1P
Query on F1P

Download SDF File 
Download CCD File 
A
1-O-PHOSPHONO-BETA-D-FRUCTOPYRANOSE
BETA-D-FRUCTOPYRANOSE-1-PHOSPHATE, ((2R,3S,4R,5R)-TETRAHYDRO-2,3,4,5-TETRAHYDROXY-2H-PYRAN-2-YL)METHYL DIHYDROGEN PHOSPHATE
C6 H13 O9 P
HXRNACQBNUPKDX-ARQDHWQXSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
F1PKd: 1000 nM PDBBIND
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.47 Å
  • R-Value Free: 0.177 
  • R-Value Work: 0.160 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 60.970α = 90.00
b = 72.300β = 90.00
c = 136.890γ = 90.00
Software Package:
Software NamePurpose
XDSdata reduction
BUSTERrefinement
autoSHARPphasing
XSCALEdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2013-05-15
    Type: Initial release
  • Version 1.1: 2013-08-28
    Type: Database references