4ME3

1.8 Angstrom Crystal Structure of the N-terminal Domain of an Archaeal MCM


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.794 Å
  • R-Value Free: 0.218 
  • R-Value Work: 0.182 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

The 1.8- angstrom Crystal Structure of the N-Terminal Domain of an Archaeal MCM as a Right-Handed Filament.

Fu, Y.Slaymaker, I.M.Wang, J.Wang, G.Chen, X.S.

(2014) J.Mol.Biol. 426: 1512-1523

  • DOI: 10.1016/j.jmb.2013.12.025

  • PubMed Abstract: 
  • Mini-chromosome maintenance (MCM) proteins are the replicative helicase necessary for DNA replication in both eukarya and archaea. Most of archaea only have one MCM gene. Here, we report a 1.8-Å crystal structure of the N-terminal MCM from the archae ...

    Mini-chromosome maintenance (MCM) proteins are the replicative helicase necessary for DNA replication in both eukarya and archaea. Most of archaea only have one MCM gene. Here, we report a 1.8-Å crystal structure of the N-terminal MCM from the archaeon Thermoplasma acidophilum (tapMCM). In the structure, the MCM N-terminus forms a right-handed filament that contains six subunits in each turn, with a diameter of 25Å of the central channel opening. The inner surface is highly positively charged, indicating DNA binding. This filament structure with six subunits per turn may also suggests a potential role for an open-ring structure for hexameric MCM and dynamic conformational changes in initiation and elongation stages of DNA replication.


    Organizational Affiliation

    Molecular and Computational Biology Program, Department of Biological Sciences, University of Southern California, Los Angeles, CA 90089, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
DNA replication licensing factor MCM related protein
A
268Thermoplasma acidophilum (strain ATCC 25905 / DSM 1728 / JCM 9062 / NBRC 15155 / AMRC-C165)Mutation(s): 0 
Find proteins for Q9HK10 (Thermoplasma acidophilum (strain ATCC 25905 / DSM 1728 / JCM 9062 / NBRC 15155 / AMRC-C165))
Go to UniProtKB:  Q9HK10
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

Download SDF File 
Download CCD File 
A
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.794 Å
  • R-Value Free: 0.218 
  • R-Value Work: 0.182 
  • Space Group: P 61
Unit Cell:
Length (Å)Angle (°)
a = 93.460α = 90.00
b = 93.460β = 90.00
c = 56.231γ = 120.00
Software Package:
Software NamePurpose
DENZOdata reduction
PHENIXrefinement
PHASERphasing
PDB_EXTRACTdata extraction
HKL-2000data collection
SCALEPACKdata scaling
HKL-2000data reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2014-01-08
    Type: Initial release
  • Version 1.1: 2014-01-29
    Type: Database references
  • Version 1.2: 2014-03-26
    Type: Database references
  • Version 1.3: 2017-11-15
    Type: Refinement description