3CRO

THE PHAGE 434 CRO/OR1 COMPLEX AT 2.5 ANGSTROMS RESOLUTION


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Observed: 0.220 

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This is version 1.2 of the entry. See complete history


Literature

The phage 434 Cro/OR1 complex at 2.5 A resolution.

Mondragon, A.Harrison, S.C.

(1991) J Mol Biol 219: 321-334

  • DOI: 10.1016/0022-2836(91)90568-q
  • Primary Citation of Related Structures:  
    3CRO

  • PubMed Abstract: 
  • The crystal structure of phage 434 Cro protein in complex with a 20 base-pair DNA fragment has been determined to 2.5 A resolution. The DNA fragment contains the sequence of the OR1 operator site. The structure shows a bent conformation for the DNA, straighter at the center and more bent at the ends ...

    The crystal structure of phage 434 Cro protein in complex with a 20 base-pair DNA fragment has been determined to 2.5 A resolution. The DNA fragment contains the sequence of the OR1 operator site. The structure shows a bent conformation for the DNA, straighter at the center and more bent at the ends. The central base-pairs adopt conformations with significant deviations from coplanarity. The two molecules interact extensively along their common interface, both through hydrogen bonds and van der Waals interactions. The significance of these interactions for operator binding and recognition is discussed.


    Related Citations: 
    • Structure of Phage 434 Cro Protein at 2.35 Angstroms Resolution
      Mondragon, A., Wolberger, C., Harrison, S.C.
      (1989) J Mol Biol 205: 179
    • Recognition of a DNA Operator by the Repressor of Phage 434. A View at High Resolution
      Aggarwal, A.K., Rodgers, D.W., Drottar, M., Ptashne, M., Harrison, S.C.
      (1988) Science 242: 899
    • Structure of the Repressor-Operator Complex of Bacteriophage 434
      Anderson, J.E., Ptashne, M., Harrison, S.C.
      (1987) Nature 326: 846

    Organizational Affiliation

    Department of Biochemistry and Molecular Biology, Harvard University, Cambridge, MA 02138.



Macromolecules

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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
PROTEIN (434 CRO)C [auth L],
D [auth R]
71Phage 434Mutation(s): 0 
Gene Names: CRO
UniProt
Find proteins for P03036 (Enterobacteria phage 434)
Explore P03036 
Go to UniProtKB:  P03036
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP03036
Protein Feature View
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  • Reference Sequence

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Entity ID: 1
MoleculeChainsLengthOrganismImage
DNA (5'-D(*AP*AP*GP*TP*AP*CP*AP*AP*AP*CP*TP*TP*TP*CP*TP*TP*G P*TP*AP*T)-3')A20N/A
Protein Feature View
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  • Reference Sequence

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Entity ID: 2
MoleculeChainsLengthOrganismImage
DNA (5'-D(*TP*AP*TP*AP*CP*AP*AP*GP*AP*AP*AP*GP*TP*TP*TP*GP*T P*AP*CP*T)-3')B20N/A
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Observed: 0.220 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 49.2α = 90
b = 47.6β = 109.5
c = 61.7γ = 90
Software Package:
Software NamePurpose
TNTrefinement

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1991-10-15
    Type: Initial release
  • Version 1.1: 2008-05-22
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance