1XIK

RIBONUCLEOSIDE-DIPHOSPHATE REDUCTASE 1 BETA CHAIN


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.70 Å
  • R-Value Free: 0.280 
  • R-Value Work: 0.206 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Crystal structure of reduced protein R2 of ribonucleotide reductase: the structural basis for oxygen activation at a dinuclear iron site.

Logan, D.T.Su, X.D.Aberg, A.Regnstrom, K.Hajdu, J.Eklund, H.Nordlund, P.

(1996) Structure 4: 1053-1064

  • DOI: 10.1016/s0969-2126(96)00112-8
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • Ribonucleotide reductases (RNRs) catalyze the formation of the deoxyribonucleotides that are essential for DNA synthesis. The R2 subunit of Escherichia coli RNR is a homodimer containing one dinuclear iron centre per monomer. A tyrosyl radical is ess ...

    Ribonucleotide reductases (RNRs) catalyze the formation of the deoxyribonucleotides that are essential for DNA synthesis. The R2 subunit of Escherichia coli RNR is a homodimer containing one dinuclear iron centre per monomer. A tyrosyl radical is essential for catalysis, and is formed via a reaction in which the reduced, diferrous form of the iron centre activates dioxygen. To help understand the mechanism of oxygen activation, we examined the structure of the diferrous form of R2.


    Related Citations: 
    • Structure and Function of the Escherichia Coli Ribonucleotide Reductase Protein R2
      Nordlund, P., Eklund, H.
      (1993) J Mol Biol 232: 123

    Organizational Affiliation

    Department of Molecular Biology University of Stockholm S-106 91 Stockholm Sweden.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
PROTEIN R2 OF RIBONUCLEOTIDE REDUCTASE
A, B
375Escherichia coliMutation(s): 0 
EC: 1.17.4.1
Find proteins for P69924 (Escherichia coli (strain K12))
Go to UniProtKB:  P69924
Protein Feature View
  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
HG
Query on HG

Download CCD File 
A, B
MERCURY (II) ION
Hg
BQPIGGFYSBELGY-UHFFFAOYSA-N
 Ligand Interaction
FE2
Query on FE2

Download CCD File 
A, B
FE (II) ION
Fe
CWYNVVGOOAEACU-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.70 Å
  • R-Value Free: 0.280 
  • R-Value Work: 0.206 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 73.44α = 90
b = 83.53β = 90
c = 113.7γ = 90
Software Package:
Software NamePurpose
AMoREphasing
TNTrefinement
MOSFLMdata reduction
CCP4data scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1997-03-12
    Type: Initial release
  • Version 1.1: 2008-03-03
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance