1H5Q

Mannitol dehydrogenase from Agaricus bisporus


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.50 Å
  • R-Value Free: 0.209 
  • R-Value Work: 0.193 
  • R-Value Observed: 0.193 

Starting Model: experimental
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This is version 1.3 of the entry. See complete history


Literature

The Crystallographic Structure of the Mannitol 2-Dehydrogenase Nadp+ Binary Complex from Agaricus Bisporus

Horer, S.Stoop, J.Mooibroek, H.Baumann, U.Sassoon, J.

(2001) J Biol Chem 276: 27555

  • DOI: https://doi.org/10.1074/jbc.M102850200
  • Primary Citation of Related Structures:  
    1H5Q

  • PubMed Abstract: 

    Mannitol, an acyclic six-carbon polyol, is one of the most abundant sugar alcohols occurring in nature. In the button mushroom, Agaricus bisporus, it is synthesized from fructose by the enzyme mannitol 2-dehydrogenase (MtDH; EC ) using NADPH as a cofactor. Mannitol serves as the main storage carbon (up to 50% of the fruit body dry weight) and plays a critical role in growth, fruit body development, osmoregulation, and salt tolerance. Furthermore, mannitol dehydrogenases are being evaluated for commercial mannitol production as alternatives to the less efficient chemical reduction of fructose. Given the importance of mannitol metabolism and mannitol dehydrogenases, MtDH was cloned into the pET28 expression system and overexpressed in Escherichia coli. Kinetic and physicochemical properties of the recombinant enzyme are indistinguishable from the natural enzyme. The crystal structure of its binary complex with NADP was solved at 1.5-A resolution and refined to an R value of 19.3%. It shows MtDH to be a tetramer and a member of the short chain dehydrogenase/reductase family of enzymes. The catalytic residues forming the so-called catalytic triad can be assigned to Ser(149), Tyr(169), and Lys(173).


  • Organizational Affiliation

    Department of Chemistry and Biochemistry, University of Berne, Freiestrasse 3, 3012 Berne, Switzerland.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
NADP-DEPENDENT MANNITOL DEHYDROGENASE
A, B, C, D, E
A, B, C, D, E, F, G, H, I, J, K, L
265Agaricus bisporusMutation(s): 0 
EC: 1.1.1.138
UniProt
Find proteins for O93868 (Agaricus bisporus)
Explore O93868 
Go to UniProtKB:  O93868
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupO93868
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
NAP
Query on NAP

Download Ideal Coordinates CCD File 
AA [auth J]
CA [auth K]
DA [auth L]
M [auth A]
O [auth B]
AA [auth J],
CA [auth K],
DA [auth L],
M [auth A],
O [auth B],
Q [auth C],
R [auth D],
S [auth E],
U [auth F],
W [auth G],
X [auth H],
Y [auth I]
NADP NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE
C21 H28 N7 O17 P3
XJLXINKUBYWONI-NNYOXOHSSA-N
NI
Query on NI

Download Ideal Coordinates CCD File 
BA [auth J]
N [auth A]
P [auth B]
T [auth E]
V [auth F]
BA [auth J],
N [auth A],
P [auth B],
T [auth E],
V [auth F],
Z [auth I]
NICKEL (II) ION
Ni
VEQPNABPJHWNSG-UHFFFAOYSA-N
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.50 Å
  • R-Value Free: 0.209 
  • R-Value Work: 0.193 
  • R-Value Observed: 0.193 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 227.25α = 90
b = 124.85β = 118.54
c = 132.69γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
MOSFLMdata reduction
SCALAdata scaling
CNSphasing

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2001-06-21
    Type: Initial release
  • Version 1.1: 2011-05-08
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2023-12-13
    Changes: Data collection, Database references, Derived calculations, Refinement description