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- Title
Evidence for a physical interaction between the Escherichia coli methyl-directed mismatch repair proteins MutL and UvrD.
- Authors
Hall, M C; Jordan, J R; Matson, S W
- Abstract
UvrD (DNA helicase II) is an essential component of two major DNA repair pathways in Escherichia coli: methyl-directed mismatch repair and UvrABC-mediated nucleotide excision repair. In addition, it has an undefined role in the RecF recombination pathway and possibly in replication. In an effort to better understand the role of UvrD in these various aspects of DNA metabolism, a yeast two-hybrid screen was used to search for interacting protein partners. Screening of an E.coli genomic library revealed a potential interaction between UvrD and MutL, a component of the methyl-directed mismatch repair pathway. The interaction was confirmed by affinity chromatography using purified proteins. Deletion analysis demonstrated that the C-terminal 218 amino acids (residues 398-615) of MutL were sufficient to produce the two-hybrid interaction with UvrD. On the other hand, both the N- and C-termini of UvrD were required for interaction with MutL. The implications of this interaction for the mismatch repair mechanism are discussed.
- Publication
The EMBO journal, 1998, Vol 17, Issue 5, p1535
- ISSN
0261-4189
- Publication type
Journal Article
- DOI
10.1093/emboj/17.5.1535