4JBZ

Structure of Mcm10 coiled-coil region


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.4 Å
  • R-Value Free: 0.205 
  • R-Value Work: 0.164 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Mcm10 self-association is mediated by an N-terminal coiled-coil domain.

Du, W.Josephrajan, A.Adhikary, S.Bowles, T.Bielinsky, A.K.Eichman, B.F.

(2013) Plos One 8: e70518-e70518

  • DOI: 10.1371/journal.pone.0070518

  • PubMed Abstract: 
  • Minichromosome maintenance protein 10 (Mcm10) is an essential eukaryotic DNA-binding replication factor thought to serve as a scaffold to coordinate enzymatic activities within the replisome. Mcm10 appears to function as an oligomer rather than in it ...

    Minichromosome maintenance protein 10 (Mcm10) is an essential eukaryotic DNA-binding replication factor thought to serve as a scaffold to coordinate enzymatic activities within the replisome. Mcm10 appears to function as an oligomer rather than in its monomeric form (or rather than as a monomer). However, various orthologs have been found to contain 1, 2, 3, 4, or 6 subunits and thus, this issue has remained controversial. Here, we show that self-association of Xenopus laevis Mcm10 is mediated by a conserved coiled-coil (CC) motif within the N-terminal domain (NTD). Crystallographic analysis of the CC at 2.4 Å resolution revealed a three-helix bundle, consistent with the formation of both dimeric and trimeric Mcm10 CCs in solution. Mutation of the side chains at the subunit interface disrupted in vitro dimerization of both the CC and the NTD as monitored by analytical ultracentrifugation. In addition, the same mutations also impeded self-interaction of the full-length protein in vivo, as measured by yeast-two hybrid assays. We conclude that Mcm10 likely forms dimers or trimers to promote its diverse functions during DNA replication.


    Organizational Affiliation

    Department of Biological Sciences, Vanderbilt University, Nashville, Tennessee, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
MALTOSE-BINDING PERIPLASMIC PROTEIN FUSED WITH XENOPUS LAEVIS MCM10 COILED-COIL REGION
A, B, C
403Xenopus laevisEscherichia coli (strain K12)
This entity is chimeric
Mutation(s): 7 
Gene Names: mcm10, malE
Find proteins for Q5EAW4 (Xenopus laevis)
Go to UniProtKB:  Q5EAW4
Find proteins for P0AEX9 (Escherichia coli (strain K12))
Go to UniProtKB:  P0AEX9
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
MAL
Query on MAL

Download SDF File 
Download CCD File 
A, B, C
MALTOSE
C12 H22 O11
GUBGYTABKSRVRQ-ASMJPISFSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.4 Å
  • R-Value Free: 0.205 
  • R-Value Work: 0.164 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 187.377α = 90.00
b = 116.618β = 103.48
c = 73.395γ = 90.00
Software Package:
Software NamePurpose
HKL-2000data reduction
HKL-2000data collection
HKL-2000data scaling
PHENIXrefinement
PHASERphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2013-12-11
    Type: Initial release
  • Version 1.1: 2014-01-01
    Type: Other
  • Version 1.2: 2017-08-09
    Type: Refinement description, Source and taxonomy