4FMO

Structure of the C-terminal domain of the Saccharomyces cerevisiae MUTL alpha (MLH1/PMS1) heterodimer bound to a fragment of exo1

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.04 Å
  • R-Value Free: 0.196 
  • R-Value Work: 0.180 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history. 

Literature

Structure of the MutL alpha C-terminal domain reveals how Mlh1 contributes to Pms1 endonuclease site.

Gueneau, E., Dherin, C., Legrand, P., Tellier-Lebegue, C., Gilquin, B., Bonnesoeur, P., Londino, F., Quemener, C., Le Du, M.H., Marquez, J.A., Moutiez, M., Gondry, M., Boiteux, S., Charbonnier, J.B.

(2013) Nat.Struct.Mol.Biol. 20: 461-468

  • DOI: 10.1038/nsmb.2511
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    • Mismatch-repair factors have a prominent role in surveying eukaryotic DNA-replication fidelity and in ensuring correct meiotic recombination. These functions depend on MutL-homolog heterodimers with Mlh1. In humans, MLH1 mutations underlie half of he ...

    Mismatch-repair factors have a prominent role in surveying eukaryotic DNA-replication fidelity and in ensuring correct meiotic recombination. These functions depend on MutL-homolog heterodimers with Mlh1. In humans, MLH1 mutations underlie half of hereditary nonpolyposis colorectal cancers (HNPCCs). Here we report crystal structures of the MutLα (Mlh1-Pms1 heterodimer) C-terminal domain (CTD) from Saccharomyces cerevisiae, alone and in complex with fragments derived from Mlh1 partners. These structures reveal structural rearrangements and additional domains in MutLα as compared to the bacterial MutL counterparts and show that the strictly conserved C terminus of Mlh1 forms part of the Pms1 endonuclease site. The structures of the ternary complexes between MutLα(CTD) and Exo1 or Ntg2 fragments reveal the binding mode of the MIP-box motif shared by several Mlh1 partners. Finally, the structures provide a rationale for the deleterious impact of MLH1 mutations in HNPCCs.

    Organizational Affiliation: 

    Unité Mixte de Recherche 8221, Commissariat à l'Energie Atomique, Centre National de la Recherche Scientifique, Institut de Biologie et Technologies de Saclay, Gif-sur-Yvette, France.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
DNA mismatch repair protein MLH1
A
288Saccharomyces cerevisiae (strain ATCC 204508 / S288c)Mutation(s): 0 
Gene Names: MLH1 (PMS2)
Find proteins for P38920 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Go to Gene View: MLH1
Go to UniProtKB:  P38920
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
DNA mismatch repair protein PMS1
B
240Saccharomyces cerevisiae (strain ATCC 204508 / S288c)Mutation(s): 0 
Gene Names: PMS1
Find proteins for P14242 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Go to Gene View: PMS1
Go to UniProtKB:  P14242
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
DNA repair peptide
C
8Saccharomyces cerevisiae (strain ATCC 204508 / S288c)Mutation(s): 0 
Gene Names: EXO1 (DHS1)
EC: 3.1.-.-
Find proteins for P39875 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Go to Gene View: EXO1
Go to UniProtKB:  P39875
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN
Download SDF File 
Download CCD File 
B
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
MG
Query on MG
Download SDF File 
Download CCD File 
A
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.04 Å
  • R-Value Free: 0.196 
  • R-Value Work: 0.180 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 193.700α = 90.00
b = 66.140β = 91.28
c = 74.470γ = 90.00
Software Package:
Software NamePurpose
XDSdata reduction
XDSdata scaling
MOLREPphasing
BUSTERrefinement

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2013-02-20
    Type: Initial release
  • Version 1.1: 2013-08-28
    Type: Database references