1ZUG

STRUCTURE OF PHAGE 434 CRO PROTEIN, NMR, 20 STRUCTURES


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 20 
  • Conformers Submitted: 20 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Three-dimensional solution structure and stability of phage 434 Cro protein.

Padmanabhan, S.Jimenez, M.A.Gonzalez, C.Sanz, J.M.Gimenez-Gallego, G.Rico, M.

(1997) Biochemistry 36: 6424-6436

  • DOI: 10.1021/bi970085p

  • PubMed Abstract: 
  • 1H NMR resonances of the phage 434 Cro protein were assigned using standard 2D NMR methods, and its solution structure determined using 867 distance constraints in distance geometry (DIANA) calculations ultimately refined by restrained molecular dyna ...

    1H NMR resonances of the phage 434 Cro protein were assigned using standard 2D NMR methods, and its solution structure determined using 867 distance constraints in distance geometry (DIANA) calculations ultimately refined by restrained molecular dynamics (GROMOS). In the 20 best NMR structures, the average pairwise backbone and heavy atom RMSDs are 0.63 +/- 0.14 and 1.53 +/- 0.15 A, respectively, for the structurally well-defined residues 4-65. Residues 1-3 and 66-71 at the N- and C-termini are structurally disordered. The region 4-65 includes five alpha-helices and tight turns which define the hydrophobic core of the protein. The backbone and heavy atom RMSDs for residues 4-65 are 0.92 +/- 0.12 and 1.99 +/- 0.12 A, respectively, for the NMR versus the crystal structures, but there are significant differences in the side-chain conformations and solvent accessibilities for some core residues. Analytical ultracentrifugation experiments confirm that 434 Cro is monomeric even at the high NMR concentrations. 434 Cro folding under NMR solution conditions is two-state as indicated by coincident urea denaturation curves from circular dichroism and intrinsic fluorescence measurements. They yield values for 434 Cro stability which show good correspondence to the free energy for global unfolding determined by NMR hydrogen exchange measurements for the slowest exchanging amide protons.


    Organizational Affiliation

    Instituto de Estructura de la Materia, Consejo Superior de Investigaciones Cientificas, Madrid, Spain.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
PHAGE 434 CRO PROTEIN
A
71Enterobacteria phage 434Gene Names: CRO
Find proteins for P03036 (Enterobacteria phage 434)
Go to UniProtKB:  P03036
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 20 
  • Conformers Submitted: 20 
  • Olderado: 1ZUG Olderado

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1997-07-07
    Type: Initial release
  • Version 1.1: 2008-03-24
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance