Large conformational changes in MutS during DNA scanning, mismatch recognition and repair signaling.

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Large conformational changes in MutS during DNA scanning, mismatch recognition and repair signalling.

MutS protein recognizes mispaired bases in DNA and targets them for mismatch repair. Little is known about the transient conformations of MutS as it signals initiation of repair. We have used single-molecule fluorescence resonance energy transfer (FRET) measurements to report the conformational dynamics of MutS during this process.