4fmo | pdb_00004fmo

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

spinqualitylabelsall models 4fmo, resolution 3.04Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 4fmo is a 3 chain structure with sequence from Saccharomyces cerevisiae s288c. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: MG, ZN Related: 4fmn, 4e4w Gene: MLH1, PMS2, YMR167W, YM8520.16 (Saccharomyces cerevisiae S288c), PMS1, YNL082W, N2317 (Saccharomyces cerevisiae S288c) Resources: FirstGlance, OCA, RCSB, PDBsum Publication Abstract from PubMed 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 MutLalpha (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 MutLalpha 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 MutLalpha(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. Structure of the MutLalpha 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 MH, Marquez JA, Moutiez M, Gondry M, Boiteux S, Charbonnier JB Nat Struct Mol Biol. 2013 Apr;20(4):461-8. doi: 10.1038/nsmb.2511. Epub 2013 Feb , 24. PMID:23435383 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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