3IBP

The Crystal Structure of the Dimerization Domain of Escherichia coli Structural Maintenance of Chromosomes Protein MukB


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.099 Å
  • R-Value Free: 0.279 
  • R-Value Work: 0.243 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

The crystal structure of the hinge domain of the Escherichia coli structural maintenance of chromosomes protein MukB.

Li, Y.Schoeffler, A.J.Berger, J.M.Oakley, M.G.

(2010) J.Mol.Biol. 395: 11-19

  • DOI: 10.1016/j.jmb.2009.10.040

  • PubMed Abstract: 
  • MukB, a divergent structural maintenance of chromosomes (SMC) protein, is important for chromosomal segregation and condensation in gamma-proteobacteria. MukB and canonical SMC proteins share a characteristic five-domain structure. Globular N- and C- ...

    MukB, a divergent structural maintenance of chromosomes (SMC) protein, is important for chromosomal segregation and condensation in gamma-proteobacteria. MukB and canonical SMC proteins share a characteristic five-domain structure. Globular N- and C-terminal domains interact to form an ATP-binding cassette-like ATPase or "head" domain, which is connected to a smaller dimerization or "hinge" domain by a long, antiparallel coiled coil. In addition to mediating dimerization, this hinge region has been implicated in both conformational flexibility and dynamic protein-DNA interactions. We report here the first crystallographic model of the MukB hinge domain. This model also contains approximately 20% of the coiled-coil domain, including an unusual coiled-coil deviation. These results will facilitate studies to clarify the roles of both the hinge and the coiled-coil domains in MukB function.


    Organizational Affiliation

    Department of Chemistry, Indiana University, Bloomington, IN 47405, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Chromosome partition protein mukB
A
302Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: mukB
Find proteins for P22523 (Escherichia coli (strain K12))
Go to UniProtKB:  P22523
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
NH4
Query on NH4

Download SDF File 
Download CCD File 
A
AMMONIUM ION
H4 N
QGZKDVFQNNGYKY-UHFFFAOYSA-O
 Ligand Interaction
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: 3.099 Å
  • R-Value Free: 0.279 
  • R-Value Work: 0.243 
  • Space Group: P 43 2 2
Unit Cell:
Length (Å)Angle (°)
a = 56.270α = 90.00
b = 56.270β = 90.00
c = 342.600γ = 90.00
Software Package:
Software NamePurpose
PDB_EXTRACTdata extraction
SOLVEphasing
PHENIXrefinement
Blu-Icedata collection
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2010-01-26
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Source and taxonomy, Version format compliance
  • Version 1.2: 2017-11-01
    Type: Refinement description