2BO6

DISSECTION OF MANNOSYLGLYCERATE SYNTHASE: AN ARCHETYPAL MANNOSYLTRANSFERASE


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.45 Å
  • R-Value Free: 0.277 
  • R-Value Work: 0.253 
  • R-Value Observed: 0.255 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Structural Dissection and High-Throughput Screening of Mannosylglyceerate Synthase

Flint, J.Taylor, E.Yang, M.Bolam, D.N.Tailford, L.E.Martinez-Fleites, C.Dodson, E.J.Davis, B.G.Gilbert, H.J.Davies, G.J.

(2005) Nat Struct Mol Biol 12: 608

  • DOI: 10.1038/nsmb950
  • Primary Citation of Related Structures:  
    2BO4, 2BO6, 2BO7, 2BO8

  • PubMed Abstract: 
  • The enzymatic transfer of activated mannose yields mannosides in glycoconjugates and oligo- and polysaccharides. Yet, despite its biological necessity, the mechanism by which glycosyltransferases recognize mannose and catalyze its transfer to acceptor molecules is poorly understood ...

    The enzymatic transfer of activated mannose yields mannosides in glycoconjugates and oligo- and polysaccharides. Yet, despite its biological necessity, the mechanism by which glycosyltransferases recognize mannose and catalyze its transfer to acceptor molecules is poorly understood. Here, we report broad high-throughput screening and kinetic analyses of both natural and synthetic substrates of Rhodothermus marinus mannosylglycerate synthase (MGS), which catalyzes the formation of the stress protectant 2-O-alpha-D-mannosyl glycerate. The sequence of MGS indicates that it is at the cusp of inverting and retaining transferases. The structures of apo MGS and complexes with donor and acceptor molecules, including GDP-mannose, combined with mutagenesis of the binding and catalytic sites, unveil the mannosyl transfer center. Nucleotide specificity is as important in GDP-D-mannose recognition as the nature of the donor sugar.


    Organizational Affiliation

    Institute for Cell and Molecular Biosciences, University of Newcastle upon Tyne, The Medical School, Newcastle upon Tyne NE2 4HH, UK.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
MANNOSYLGLYCERATE SYNTHASEA, B397Rhodothermus marinusMutation(s): 0 
Gene Names: mgs
EC: 2.4.1 (PDB Primary Data), 2.4.1.269 (UniProt)
UniProt
Find proteins for Q9RFR0 (Rhodothermus marinus)
Explore Q9RFR0 
Go to UniProtKB:  Q9RFR0
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ9RFR0
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
DGY
Query on DGY

Download Ideal Coordinates CCD File 
C [auth A],
E [auth B]
(2R)-2,3-DIHYDROXYPROPANOIC ACID
C3 H6 O4
RBNPOMFGQQGHHO-UWTATZPHSA-N
 Ligand Interaction
MN
Query on MN

Download Ideal Coordinates CCD File 
D [auth A],
F [auth B]
MANGANESE (II) ION
Mn
WAEMQWOKJMHJLA-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.45 Å
  • R-Value Free: 0.277 
  • R-Value Work: 0.253 
  • R-Value Observed: 0.255 
  • Space Group: P 32 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 150.228α = 90
b = 150.228β = 90
c = 154.285γ = 120
Software Package:
Software NamePurpose
HKLdata reduction
HKLdata scaling
SHELXphasing
SOLVEphasing
REFMACrefinement

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2005-06-06
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Advisory, Refinement description, Version format compliance