1LQ7

De Novo Designed Protein Model of Radical Enzymes


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 30 
  • Conformers Submitted: 16 
  • Selection Criteria: lowest refinement function penalty, best chemical shift agreement 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structure of a De Novo Designed Protein Model of Radical Enzymes

Dai, Q.-H.Tommos, C.Fuentes, E.J.Blomberg, M.Dutton, P.L.Wand, A.J.

(2002) J.Am.Chem.Soc. 124: 10952-10953

  • Also Cited By: 2LXY, 2MI7

  • PubMed Abstract: 
  • The use of side chains as catalytic cofactors for protein mediated redox chemistry raises significant mechanistic issues as to how these amino acids are activated toward radical chemistry in a controlled manner. De novo protein design has been used t ...

    The use of side chains as catalytic cofactors for protein mediated redox chemistry raises significant mechanistic issues as to how these amino acids are activated toward radical chemistry in a controlled manner. De novo protein design has been used to examine the structural basis for the creation and maintenance of a tryptophanyl radical in a three-helix bundle protein maquette. Here we report the detailed structural analysis of the protein by multidimensional NMR methods. An interesting feature of the structure is an apparent pi-cation interaction involving the sole tryptophan and a lysine side chain. Hybrid density functional calculations support the notion that this interaction raises the reduction potential of the W degrees /WH redox pair and helps explain the redox characteristics of the protein. This model protein system therefore provides a powerful model for exploring the structural basis for controlled radical chemistry in protein.


    Related Citations: 
    • De novo proteins as models of radical enzymes
      Tommos, C.,Skalicky, J.J.,Pilloud, D.L.,Wand, A.J.,Dutton, P.L.
      (1999) Biochemistry 38: 9495


    Organizational Affiliation

    The Johnson Research Foundation and Department of Biochemistry and Biophysics, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6059, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Alpha3W
A
67N/AN/A
Protein Feature View is not available: No corresponding UniProt sequence found.
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 30 
  • Conformers Submitted: 16 
  • Selection Criteria: lowest refinement function penalty, best chemical shift agreement 
  • Olderado: 1LQ7 Olderado

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2002-06-05
    Type: Initial release
  • Version 1.1: 2008-04-28
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance