5AKD

MutS in complex with the N-terminal domain of MutL - crystal form 3


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 7.6 Å
  • R-Value Free: 0.306 
  • R-Value Work: 0.264 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

MutS/MutL crystal structure reveals that the MutS sliding clamp loads MutL onto DNA.

Groothuizen, F.S.Winkler, I.Cristovao, M.Fish, A.Winterwerp, H.H.Reumer, A.Marx, A.D.Hermans, N.Nicholls, R.A.Murshudov, G.N.Lebbink, J.H.Friedhoff, P.Sixma, T.K.

(2015) Elife 4: e06744-e06744

  • DOI: 10.7554/eLife.06744
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • To avoid mutations in the genome, DNA replication is generally followed by DNA mismatch repair (MMR). MMR starts when a MutS homolog recognizes a mismatch and undergoes an ATP-dependent transformation to an elusive sliding clamp state. How this trans ...

    To avoid mutations in the genome, DNA replication is generally followed by DNA mismatch repair (MMR). MMR starts when a MutS homolog recognizes a mismatch and undergoes an ATP-dependent transformation to an elusive sliding clamp state. How this transient state promotes MutL homolog recruitment and activation of repair is unclear. Here we present a crystal structure of the MutS/MutL complex using a site-specifically crosslinked complex and examine how large conformational changes lead to activation of MutL. The structure captures MutS in the sliding clamp conformation, where tilting of the MutS subunits across each other pushes DNA into a new channel, and reorientation of the connector domain creates an interface for MutL with both MutS subunits. Our work explains how the sliding clamp promotes loading of MutL onto DNA, to activate downstream effectors. We thus elucidate a crucial mechanism that ensures that MMR is initiated only after detection of a DNA mismatch.


    Organizational Affiliation

    Division of Biochemistry and CGC.nl, Netherlands Cancer Institute, Amsterdam, Netherlands.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
DNA MISMATCH REPAIR PROTEIN MUTS
A, B, E, F, I, J
800Escherichia coli (strain K12)Mutation(s): 7 
Gene Names: mutS (fdv)
Find proteins for P23909 (Escherichia coli (strain K12))
Go to UniProtKB:  P23909
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
DNA MISMATCH REPAIR PROTEIN MUTL
C, D, G, H, K, L
369Escherichia coli (strain K12)Mutation(s): 5 
Gene Names: mutL
Find proteins for P23367 (Escherichia coli (strain K12))
Go to UniProtKB:  P23367
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ANP
Query on ANP

Download SDF File 
Download CCD File 
A, B, E, F, I, J
PHOSPHOAMINOPHOSPHONIC ACID-ADENYLATE ESTER
C10 H17 N6 O12 P3
PVKSNHVPLWYQGJ-KQYNXXCUSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 7.6 Å
  • R-Value Free: 0.306 
  • R-Value Work: 0.264 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 193.020α = 90.00
b = 109.762β = 90.00
c = 275.841γ = 90.00
Software Package:
Software NamePurpose
XDSdata reduction
REFMACrefinement
Aimlessdata scaling
PHASERphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2015-07-22
    Type: Initial release
  • Version 1.1: 2019-02-27
    Type: Data collection, Database references, Other