2CRO

STRUCTURE OF PHAGE 434 CRO PROTEIN AT 2.35 ANGSTROMS RESOLUTION

• PDB DOI: https://doi.org/10.2210/pdb2CRO/pdb

• Classification: GENE REGULATING PROTEIN
• Organism(s): Phage 434
• Mutation(s): No 


• Deposited: 1988-12-08 Released: 1989-10-15 
• Deposition Author(s): Mondragon, A., Wolberger, C., Harrison, S.C.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.35 Å
• R-Value Observed: 0.195 

Literature

Structure of phage 434 Cro protein at 2.35 A resolution.

Mondragon, A., Wolberger, C., Harrison, S.C.

(1989) J Mol Biol 205: 179-188

• PubMed: 2647998 
• DOI: https://doi.org/10.1016/0022-2836(89)90374-4
• Primary Citation of Related Structures:  
  2CRO


• PubMed Abstract: 
  

  The crystal structure of phage 434 Cro protein has been determined and refined against 2.35 A data to an R-factor of 19.5%. The protein comprises five alpha-helices and shows the helix-turn-helix motif found in other repressor proteins.

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Organizational Affiliation: 

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

Biological Assembly 1  

Global Symmetry: Cyclic - C3  (Explore in 3D)
Global Stoichiometry: Homo 3-mer - A3 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 8.08 kDa 
• Atom Count: 537 
• Modelled Residue Count: 65 
• Deposited Residue Count: 71 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
REGULATORY PROTEIN CRO	A	71	Phage 434	Mutation(s): 0
UniProt
Find proteins for P03036 (Enterobacteria phage 434) Explore P03036  Go to UniProtKB:  P03036

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.35 Å
• R-Value Observed: 0.195 
• Space Group: H 3 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 49.82	α = 90
b = 49.82	β = 90
c = 154.2	γ = 120

Software Package:

Software Name	Purpose
PROLSQ	refinement

Structure Validation

Entry History 

Deposition Data

• Released Date: 1989-10-15 
Deposition Author(s): Mondragon, A., Wolberger, C., Harrison, S.C.

Revision History  

• Version 1.0: 1989-10-15
  Type: Initial release
  
• Version 1.1: 2008-03-24
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2024-02-14
  Changes: Data collection, Database references, Other