1J1V

Crystal structure of DnaA domainIV complexed with DnaAbox DNA


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Free: 0.249 
  • R-Value Work: 0.229 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structural basis of replication origin recognition by the DnaA protein

Fujikawa, N.Kurumizaka, H.Nureki, O.Terada, T.Shirouzu, M.Katayama, T.Yokoyama, S.

(2003) NUCLEIC ACIDS RES. 31: 2077-2086


  • PubMed Abstract: 
  • Escherichia coli DnaA binds to 9 bp sequences (DnaA boxes) in the replication origin, oriC, to form a complex initiating chromosomal DNA replication. In the present study, we determined the crystal structure of its DNA-binding domain (domain IV) comp ...

    Escherichia coli DnaA binds to 9 bp sequences (DnaA boxes) in the replication origin, oriC, to form a complex initiating chromosomal DNA replication. In the present study, we determined the crystal structure of its DNA-binding domain (domain IV) complexed with a DnaA box at 2.1 A resolution. DnaA domain IV contains a helix-turn-helix motif for DNA binding. One helix and a loop of the helix- turn-helix motif are inserted into the major groove and 5 bp (3' two-thirds of the DnaA box sequence) are recognized through base-specific hydrogen bonds and van der Waals contacts with the C5-methyl groups of thymines. In the minor groove, Arg399, located in the loop adjacent to the motif, recognizes three more base pairs (5' one-third of the DnaA box sequence) by base-specific hydrogen bonds. DNA bending by approximately 28 degrees was also observed in the complex. These base-specific interactions explain how DnaA exhibits higher affinity for the strong DnaA boxes (R1, R2 and R4) than the weak DnaA boxes (R3 and M) in the replication origin.


    Organizational Affiliation

    RIKEN Genomic Sciences Center, 1-7-22 Suehiro-cho, Tsurumi, Yokohama 230-0045, Japan.




Macromolecules

Find similar proteins by: Sequence  |  Structure


Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
Chromosomal replication initiator protein dnaA
A
94Escherichia coli (strain K12)Gene Names: dnaA
Find proteins for P03004 (Escherichia coli (strain K12))
Go to UniProtKB:  P03004
Entity ID: 1
MoleculeChainsLengthOrganism
5'-D(*TP*GP*TP*TP*AP*TP*CP*CP*AP*CP*AP*GP*G)-3'B13N/A
Entity ID: 2
MoleculeChainsLengthOrganism
5'-D(*CP*CP*TP*GP*TP*GP*GP*AP*TP*AP*AP*CP*A)-3'C13N/A
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MSE
Query on MSE
A
L-PEPTIDE LINKINGC5 H11 N O2 SeMET
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Free: 0.249 
  • R-Value Work: 0.229 
  • Space Group: P 41 21 2
Unit Cell:
Length (Å)Angle (°)
a = 50.385α = 90.00
b = 50.385β = 90.00
c = 158.830γ = 90.00
Software Package:
Software NamePurpose
CNSrefinement
SCALEPACKdata scaling
DENZOdata reduction
SHARPphasing

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2003-04-22
    Type: Initial release
  • Version 1.1: 2008-04-27
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance