1ORC

CRO REPRESSOR INSERTION MUTANT K56-[DGEVK]


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.54 Å
  • R-Value Work: 0.178 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

High-resolution structure of an engineered Cro monomer shows changes in conformation relative to the native dimer.

Albright, R.A.Mossing, M.C.Matthews, B.W.

(1996) Biochemistry 35: 735-742

  • DOI: 10.1021/bi951958n
  • Primary Citation of Related Structures:  
    1ORC

  • PubMed Abstract: 
  • A rationally designed, genetically engineered, monomeric form of the Cro protein from bacteriophage lambda has been crystallized and its structure determined by isomorphous replacement and refined to a resolution of 1.54 A. The structure confirms the rationale of the design but, at the same time, reveals 1-2 A shifts throughout the monomer structure relative to the previously determined structure of the dimeric wild-type protein ...

    A rationally designed, genetically engineered, monomeric form of the Cro protein from bacteriophage lambda has been crystallized and its structure determined by isomorphous replacement and refined to a resolution of 1.54 A. The structure confirms the rationale of the design but, at the same time, reveals 1-2 A shifts throughout the monomer structure relative to the previously determined structure of the dimeric wild-type protein. These changes include a 1.6 A main-chain shift in part of the beta-sheet region of the molecule relative to the alpha-helical region and a 1.1 A shift of a buried phenylalanine within the core as well as a correlated 2.2 A shift in a solvent-exposed beta-hairpin. The conformational adjustments appear to reflect an inherent flexibility of the protein that is associated with its DNA-binding function.


    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

    Institute of Molecular Biology, Howard Hughes Medical Institute, University of Oregon, Eugene 97403, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
CRO REPRESSOR INSERTION MUTANT K56-[DGEVK]A71Escherichia virus LambdaMutation(s): 0 
Gene Names: CRO MUTANT K56-[DGEVK]crolambdap57
UniProt
Find proteins for P03040 (Escherichia phage lambda)
Explore P03040 
Go to UniProtKB:  P03040
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.54 Å
  • R-Value Work: 0.178 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 34.77α = 90
b = 39.17β = 90
c = 48.31γ = 90
Software Package:
Software NamePurpose
TNTrefinement
SDMSdata reduction

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1996-12-23
    Type: Initial release
  • Version 1.1: 2008-03-24
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance