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 
  • R-Value Observed: 0.181 

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:  
    4E4W, 4FMN, 4FMO

  • 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 hereditary nonpolyposis colorectal cancers (HNPCCs) ...

    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:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
DNA mismatch repair protein MLH1A288Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: MLH1PMS2YMR167WYM8520.16
UniProt
Find proteins for P38920 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore P38920 
Go to UniProtKB:  P38920
Protein Feature View
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
DNA mismatch repair protein PMS1B240Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: PMS1YNL082WN2317
UniProt
Find proteins for P14242 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore P14242 
Go to UniProtKB:  P14242
Protein Feature View
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  • Reference Sequence
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
DNA repair peptideC8Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: EXO1DHS1YOR033COR26.23
EC: 3.1
UniProt
Find proteins for P39875 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore P39875 
Go to UniProtKB:  P39875
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

Download Ideal Coordinates CCD File 
E [auth B], F [auth B]ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
MG
Query on MG

Download Ideal Coordinates CCD File 
D [auth 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 
  • R-Value Observed: 0.181 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 193.7α = 90
b = 66.14β = 91.28
c = 74.47γ = 90
Software Package:
Software NamePurpose
MOLREPphasing
BUSTERrefinement
XDSdata reduction
XDSdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

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