2BO4

Dissection of mannosylglycerate synthase: an archetypal mannosyltransferase


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.95 Å
  • R-Value Free: 0.192 
  • R-Value Work: 0.176 

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:  

  • 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 accepto ...

    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: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
MANNOSYLGLYCERATE SYNTHASE
A, B, C, D, E, F
397Rhodothermus marinusMutation(s): 0 
Gene Names: mgs
EC: 2.4.1.269
Find proteins for Q9RFR0 (Rhodothermus marinus)
Go to UniProtKB:  Q9RFR0
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
FLC
Query on FLC

Download SDF File 
Download CCD File 
A, B, C, D, E, F
CITRATE ANION
C6 H5 O7
KRKNYBCHXYNGOX-UHFFFAOYSA-K
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
FLCKi: 24600 nM BINDINGMOAD
FLCKi: 24600 nM PDBBIND
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.95 Å
  • R-Value Free: 0.192 
  • R-Value Work: 0.176 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 261.148α = 90.00
b = 151.288β = 90.41
c = 153.240γ = 90.00
Software Package:
Software NamePurpose
REFMACrefinement
HKLdata scaling
SHELXphasing
SOLVEphasing
HKLdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

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