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Structure of the human MLH1 N-terminus: implications for predisposition to Lynch syndrome.


ABSTRACT: Mismatch repair prevents the accumulation of erroneous insertions/deletions and non-Watson-Crick base pairs in the genome. Pathogenic mutations in the MLH1 gene are associated with a predisposition to Lynch and Turcot's syndromes. Although genetic testing for these mutations is available, robust classification of variants requires strong clinical and functional support. Here, the first structure of the N-terminus of human MLH1, determined by X-ray crystallography, is described. The structure shares a high degree of similarity with previously determined prokaryotic MLH1 homologs; however, this structure affords a more accurate platform for the classification of MLH1 variants.

SUBMITTER: Wu H 

PROVIDER: S-EPMC4528928 | biostudies-literature | 2015 Aug

REPOSITORIES: biostudies-literature

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Structure of the human MLH1 N-terminus: implications for predisposition to Lynch syndrome.

Wu Hong H   Zeng Hong H   Lam Robert R   Tempel Wolfram W   Kerr Iain D ID   Min Jinrong J  

Acta crystallographica. Section F, Structural biology communications 20150728 Pt 8


Mismatch repair prevents the accumulation of erroneous insertions/deletions and non-Watson-Crick base pairs in the genome. Pathogenic mutations in the MLH1 gene are associated with a predisposition to Lynch and Turcot's syndromes. Although genetic testing for these mutations is available, robust classification of variants requires strong clinical and functional support. Here, the first structure of the N-terminus of human MLH1, determined by X-ray crystallography, is described. The structure sha  ...[more]

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