1FMF

REFINED SOLUTION STRUCTURE OF THE (13C,15N-LABELED) B12-BINDING SUBUNIT OF GLUTAMATE MUTASE FROM CLOSTRIDIUM TETANOMORPHUM


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 30 
  • Selection Criteria: structures with acceptable covalent geometry,structures with favorable non-bond energy,structures with the least restraint violations,structures with the lowest energy 

wwPDB Validation 3D Report Full Report


This is version 1.4 of the entry. See complete history

Literature

A protein pre-organized to trap the nucleotide moiety of coenzyme B(12): refined solution structure of the B(12)-binding subunit of glutamate mutase from Clostridium tetanomorphum.

Hoffmann, B.Tollinger, M.Konrat, R.Huhta, M.Marsh, E.N.Krautler, B.

(2001) Chembiochem 2: 643-655


  • PubMed Abstract: 
  • Uniformly (13)C,(15)N-labeled MutS, the coenzyme B(12)-binding subunit of glutamate mutase from Clostridium tetanomorphum, was prepared by overexpression from an Escherichia coli strain. Multidimensional heteronuclear NMR spectroscopic experiments wi ...

    Uniformly (13)C,(15)N-labeled MutS, the coenzyme B(12)-binding subunit of glutamate mutase from Clostridium tetanomorphum, was prepared by overexpression from an Escherichia coli strain. Multidimensional heteronuclear NMR spectroscopic experiments with aqueous solutions of (13)C,(15)N-labeled MutS provided signal assignments for roughly 90% of the 1025 hydrogen, 651 carbon, and 173 nitrogen atoms and resulted in about 1800 experimental restraints. Based on the information from the NMR experiments, the structure of MutS was calculated, confirming the earlier, less detailed structure obtained with (15)N-labeled MutS. The refined analysis allowed a precise determination of the secondary and tertiary structure including several crucial side chain interactions. The structures of (the apoprotein) MutS in solution and of the B(12)-binding subunit in the crystal of the corresponding homologous holoenzyme from Clostridium cochlearium differ only in a section that forms the well-structured helix alpha1 in the crystal structure and that also comprises the cobalt-coordinating histidine residue. In the apoprotein MutS, this part of the B(12)-binding subunit is dynamic. The carboxy-terminal end of this section is conformationally flexible and has significant propensity for an alpha-helical structure ("nascent helix"). This dynamic section in MutS is a decisive element for the binding of the nucleotide moiety of coenzyme B(12) and appears to be stabilized as a helix (alpha1) upon trapping of the nucleotide of the B(12) cofactor.


    Related Citations: 
    • Adenosylcobalamin-dependent glutamate mutase from Clostridium tetanomorphum. Overexpression in Escherichia coli, purification and Characterization of the recombinant enzyme
      Holloway, D.E.,Marsh, E.N.G.
      (1994) J.Biol.Chem. 269: 20425
    • How a protein prepares for B12-binding: structure and dynamics of the B12-binding subunit of glutamate mutase from Clostridium tetanomorphum
      Tollinger, M.,Konrat, R.,Hilbert, B.H.,Marsh, E.N.G.,Kraeutler, B.
      (1998) Structure 6: 1021


    Organizational Affiliation

    Institute of Organic Chemistry, University of Innsbruck, Innrain 52a, 6020 Innsbruck, Austria.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
METHYLASPARTATE MUTASE S CHAIN
A
137Clostridium tetanomorphumGene Names: glmS (mutS)
EC: 5.4.99.1
Find proteins for Q05488 (Clostridium tetanomorphum)
Go to UniProtKB:  Q05488
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 30 
  • Selection Criteria: structures with acceptable covalent geometry,structures with favorable non-bond energy,structures with the least restraint violations,structures with the lowest energy 
  • Olderado: 1FMF Olderado

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2002-02-15
    Type: Initial release
  • Version 1.1: 2008-04-27
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2017-02-01
    Type: Structure summary
  • Version 1.4: 2018-01-24
    Type: Structure summary