An Msh3 ATPase domain mutation has no effect on MMR function.

ABSTRACT:

Objective

To demonstrate that the Msh3 ATPase domain is required for DNA mismatch repair and tumor suppression in a murine model.

Results

The DNA mismatch repair proteins are members of the ABC family of ATPases. ATP binding and hydrolysis regulates their mismatch repair function. In the current study, a mouse model was generated harboring a glycine to aspartic acid residue change in the Walker A motif of the ATPase domain of Msh3. Impaired ATP mediated release of the Msh2-Msh3 ^GD/GD complex from it's DNA substrate in vitro confirmed the presence of an ATPase defect. However, the mismatch repair function of the protein was not significantly affected. Therefore, mutation of a critical residue within the ATPase domain of Msh3 did not preclude mismatch repair at the

SUBMITTER: Edwards Y 

PROVIDER: S-EPMC5702223 | biostudies-literature | 2017 Nov

REPOSITORIES: biostudies-literature