2CDC

Sulfolobus solfataricus Glucose Dehydrogenase 1 in complex with NADP and Xylose


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.50 Å
  • R-Value Free: 0.239 
  • R-Value Work: 0.204 
  • R-Value Observed: 0.206 

wwPDB Validation 3D Report Full Report



Literature

The structural basis of substrate promiscuity in glucose dehydrogenase from the hyperthermophilic archaeon Sulfolobus solfataricus.

Milburn, C.C.Lamble, H.J.Theodossis, A.Bull, S.D.Hough, D.W.Danson, M.J.Taylor, G.L.

(2006) J Biol Chem 281: 14796-14804

  • DOI: 10.1074/jbc.M601334200
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • The hyperthermophilic archaeon Sulfolobus solfataricus grows optimally above 80 degrees C and utilizes an unusual, promiscuous, non-phosphorylative Entner-Doudoroff pathway to metabolize both glucose and galactose. The first enzyme in this pathway, g ...

    The hyperthermophilic archaeon Sulfolobus solfataricus grows optimally above 80 degrees C and utilizes an unusual, promiscuous, non-phosphorylative Entner-Doudoroff pathway to metabolize both glucose and galactose. The first enzyme in this pathway, glucose dehydrogenase, catalyzes the oxidation of glucose to gluconate, but has been shown to have activity with a broad range of sugar substrates, including glucose, galactose, xylose, and L-arabinose, with a requirement for the glucose stereo configuration at the C2 and C3 positions. Here we report the crystal structure of the apo form of glucose dehydrogenase to a resolution of 1.8 A and a complex with its required cofactor, NADP+, to a resolution of 2.3 A. A T41A mutation was engineered to enable the trapping of substrate in the crystal. Complexes of the enzyme with D-glucose and D-xylose are presented to resolutions of 1.6 and 1.5 A, respectively, that provide evidence of selectivity for the beta-anomeric, pyranose form of the substrate, and indicate that this is the productive substrate form. The nature of the promiscuity of glucose dehydrogenase is also elucidated, and a physiological role for this enzyme in xylose metabolism is suggested. Finally, the structure suggests that the mechanism of sugar oxidation by this enzyme may be similar to that described for human sorbitol dehydrogenase.


    Organizational Affiliation

    Centre for Biomolecular Sciences, University of St. Andrews, North Haugh, St. Andrews, Fife KY16 9ST, Scotland, UK.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
GLUCOSE DEHYDROGENASE GLUCOSE 1-DEHYDROGENASE, DHG-1A, B, C, D366Saccharolobus solfataricusMutation(s): 1 
Gene Names: gdh
EC: 1.1.1.47 (PDB Primary Data), 1.1.1.359 (UniProt), 1.1.1.120 (UniProt), 1.1.1.48 (UniProt)
Find proteins for O93715 (Saccharolobus solfataricus)
Explore O93715 
Go to UniProtKB:  O93715
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 5 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
NAP
Query on NAP

Download CCD File 
A, B, C, D
NADP NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE
C21 H28 N7 O17 P3
XJLXINKUBYWONI-NNYOXOHSSA-N
 Ligand Interaction
XYS
Query on XYS

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A, B, C, D
alpha-D-xylopyranose
C5 H10 O5
SRBFZHDQGSBBOR-LECHCGJUSA-N
 Ligand Interaction
XYP
Query on XYP

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A, B, C, D
beta-D-xylopyranose
C5 H10 O5
SRBFZHDQGSBBOR-KKQCNMDGSA-N
 Ligand Interaction
ZN
Query on ZN

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A, B, C, D
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
EDO
Query on EDO

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B, C, D
1,2-ETHANEDIOL
C2 H6 O2
LYCAIKOWRPUZTN-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.50 Å
  • R-Value Free: 0.239 
  • R-Value Work: 0.204 
  • R-Value Observed: 0.206 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 68.644α = 90
b = 91.032β = 89.98
c = 138.725γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
MOSFLMdata reduction
SCALAdata scaling
AMoREphasing

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2006-03-22
    Type: Initial release
  • Version 1.1: 2011-05-08
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 2.0: 2018-02-28
    Changes: Atomic model, Database references, Source and taxonomy
  • Version 3.0: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Advisory, Atomic model, Data collection, Derived calculations, Other, Structure summary