DNA mismatch repair protein MLH1 - P38920 (MLH1_YEAST)

 

Protein Feature View of PDB entries mapped to a UniProtKB sequence  

  • Number of PDB entries for P38920: 3
 
Function
Required for DNA mismatch repair (MMR), correcting base-base mismatches and insertion-deletion loops (IDLs) resulting from DNA replication, DNA damage or from recombination events between non-identical sequences during meiosis. Component of different MutL heterodimers that form a ternary complex with the MutS heterodimers, which initially recognize the DNA mismatches. This complex is thought to be responsible for directing the downsteam MMR events, including strand discrimination, excision, and resynthesis. Plays a major role in maintaining the genetic stability of simple sequence repeats, the repair of heteroduplex sites present in meiotic recombination intermediates, and the promotion of meiotic crossing-over. UniProt
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Subunit Structure
Heterodimer of MLH1 and PMS1, called MutLalpha, which is the major MMR MutL activity correcting base-base mismatches as well as IDLs. The heterodimer binds double strand DNA independently of a mismatch with positive cooperativity and has more than one DNA binding site. Forms a ternary complex with either the MSH2-MSH6 (MutSalpha) or the MSH2-MSH3 heterodimer (MutSbeta), which recognize and bind to mismatch DNA. Ternary complex formation is promoted by ATP binding. Heterodimer of MLH1 and MLH3, called MutLbeta, which is involved in correction of a specific subset of IDLs when associated with MutSbeta. Heterodimer of MLH1 and MLH2. UniProt
  • Organism: Baker's yeast
  • Length:
  • UniProt
  • Other Gene names: MLH1, PMS2, YMR167W, YM8520.16
This protein in other organisms (by gene name):
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Data in green originates from UniProtKB  
Variation data (sourced from UniProt) shows non-genetic variation from the ExPASy   and dbSNP   websites.
Data in yellow originates from Pfam  , by interacting with the HMMER3 web site  
Data in purple originates from Phosphosite  .
Data in orange originates from the SCOP   (version 1.75) and SCOPe   (version 2.04) classifications.
Data in grey has been calculated using BioJava  . Protein disorder predictions are based on JRONN (Troshin, P. and Barton, G. J. unpublished), a Java implementation of RONN  
  • Red: potentially disorderd region
  • Blue: probably ordered region.
Hydropathy has been calculated using a sliding window of 15 residues and summing up scores from standard hydrophobicity tables.
  • Red: hydrophobic
  • Blue: hydrophilic.
Data in lilac represent the genomic exon structure projected onto the UniProt sequence.
Data in blue originates from PDB
  • Secstruc: Secondary structure projected from representative PDB entries onto the UniProt sequence.
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Validation Track

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Data in red indicates combined ranges of Homology Models from SBKB   and the Protein Model Portal  
The PDB to UniProt mapping is based on the data provided by the EBI SIFTS project. See also Velankar et al., Nucleic Acids Research 33, D262-265 (2005).
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