2ORC

CRO REPRESSOR INSERTION MUTANT K56-[DGEVK], NMR, 32 STRUCTURES


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 50 
  • Conformers Submitted: 32 
  • Selection Criteria: NO DISTANCE VIOLATION > 0.5A, NO DIHEDRAL VIOLATION > 5 DEGREES 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Solution structure and dynamics of a designed monomeric variant of the lambda Cro repressor.

Mossing, M.C.

(1998) Protein Sci. 7: 983-993

  • DOI: 10.1002/pro.5560070416

  • PubMed Abstract: 
  • The solution structure of a monomeric variant of the lambda Cro repressor has been determined by multidimensional NMR. Cro K56[DGEVK] differs from wild-type Cro by the insertion of five amino acids at the center of the dimer interface. 1H and 15N res ...

    The solution structure of a monomeric variant of the lambda Cro repressor has been determined by multidimensional NMR. Cro K56[DGEVK] differs from wild-type Cro by the insertion of five amino acids at the center of the dimer interface. 1H and 15N resonances for 70 of the 71 residues have been assigned. Thirty-two structures were calculated by hybrid distance geometry/simulated annealing methods using 463 NOE-distance restraints, 26 hydrogen-bond, and 39 dihedral-angle restraints. The root-mean-square deviation (RMSD) from the average structure for atoms in residues 3-60 is 1.03 +/- 0.44 A for the peptide backbone and 1.6 +/- 0.73 A for all nonhydrogen atoms. The overall structure conforms very well to the original design. Although the five inserted residues form a beta hairpin as expected, this engineered turn as well as other turns in the structure are not well defined by the NMR data. Dynamics studies of backbone amides reveal T1/T2 ratios of residues in the alpha2-alpha3, beta2-beta3, and engineered turn that are reflective of chemical exchange or internal motion. The solution structure and dynamics are discussed in light of the conformational variation that has been observed in other Cro structures, and the importance of flexibility in DNA recognition.


    Related Citations: 
    • Stable, Monomeric Variants of Lambda Cro Obtained by Insertion of a Designed Beta-Hairpin Sequence
      Mossing, M.C.,Sauer, R.T.
      (1990) Science 250: 1712


    Organizational Affiliation

    Department of Biological Sciences, University of Notre Dame, Indiana 46556, USA. mossing.1@nd.edu




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
CRO REPRESSOR
A
71Enterobacteria phage lambdaGene Names: cro
Find proteins for P03040 (Enterobacteria phage lambda)
Go to UniProtKB:  P03040
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 50 
  • Conformers Submitted: 32 
  • Selection Criteria: NO DISTANCE VIOLATION > 0.5A, NO DIHEDRAL VIOLATION > 5 DEGREES 
  • Olderado: 2ORC Olderado
Software Package:
Software NamePurpose
X-PLORmodel building
X-PLORrefinement
X-PLORphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 1998-01-20 
  • Released Date: 1998-05-27 
  • Deposition Author(s): Mossing, M.C.

Revision History 

  • Version 1.0: 1998-05-27
    Type: Initial release
  • Version 1.1: 2008-03-24
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance