1EHX

NMR SOLUTION STRUCTURE OF THE LAST UNKNOWN MODULE OF THE CELLULOSOMAL SCAFFOLDIN PROTEIN CIPC OF CLOSTRIDUM CELLULOLYTICUM


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 50 
  • Conformers Submitted: 20 
  • Selection Criteria: back calculated data agree with experimental NOESY spectrum, structures with acceptable covalent geometry, structures with favorable non-bond energy, structures with the least restraint violations, structures with the lowest energy 

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This is version 1.2 of the entry. See complete history

Literature

Solution structure of the module X2 1 of unknown function of the cellulosomal scaffolding protein CipC of Clostridium cellulolyticum.

Mosbah, A.Belaich, A.Bornet, O.Belaich, J.P.Henrissat, B.Darbon, H.

(2000) J.Mol.Biol. 304: 201-217

  • DOI: 10.1006/jmbi.2000.4192

  • PubMed Abstract: 
  • Multidimensional, homo- and heteronuclear magnetic resonance spectroscopy combined with dynamical annealing has been used to determine the structure of a 94 residue module (X2 1) of the scaffolding protein CipC from the anaerobic bacterium Clostridiu ...

    Multidimensional, homo- and heteronuclear magnetic resonance spectroscopy combined with dynamical annealing has been used to determine the structure of a 94 residue module (X2 1) of the scaffolding protein CipC from the anaerobic bacterium Clostridium cellulolyticum. An experimental data set comprising 1647 nuclear Overhauser effect-derived restraints, 105 hydrogen bond restraints and 66 phi torsion angle restraints was used to calculate 20 converging final solutions. The calculated structures have an average rmsd about the mean structure of 0.55(+/-0.11) A for backbone atoms and 1.40(+/-0.11) A for all heavy atoms when fitted over the secondary structural elements. The X2 1 module has an immunoglobulin-like fold with two beta-sheets packed against each other. One sheet contains three strands, the second contains four strands. An additional strand is intercalated between the beta-sandwich, as well as two turns of a 3(.10) helix. X2 1 has a surprising conformational stability and may act as a conformational linker and solubility enhancer within the scaffolding protein. The fold of X2 1 is very similar to that of telokin, titin Ig domain, hemolin D2 domain, twitchin immunoglobulin domain and the first four domains of the IgSF portion of transmembrane cell adhesion molecule. As a consequence, the X2 1 module is the first prokaryotic member assigned to the I set of the immunoglobulin superfamily even though no sequence similarity with any member of this superfamily could be detected.


    Organizational Affiliation

    Architecture et Fonction des Macromolécules Biologiques, CNRS UPR 9039, 31 Chemin Joseph-Aiguier, Marseille, Cedex 20, 13402, France.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
SCAFFOLDIN PROTEIN
A
94[Clostridium] cellulolyticumMutation(s): 0 
Gene Names: cipC
Find proteins for Q45996 ([Clostridium] cellulolyticum)
Go to UniProtKB:  Q45996
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 50 
  • Conformers Submitted: 20 
  • Selection Criteria: back calculated data agree with experimental NOESY spectrum, structures with acceptable covalent geometry, structures with favorable non-bond energy, structures with the least restraint violations, structures with the lowest energy 
  • Olderado: 1EHX Olderado

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2000-11-17
    Type: Initial release
  • Version 1.1: 2008-04-27
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance