Arches. Photo by Daniel Chia
HOPES: Huntington's Outreach Project for Education, at Stanford

mismatch repair enzyme

An enzyme that recognizes and repairs incorrect pairings of nitrogenous bases in DNA. For instance, a mismatch repair enzyme would recognize when Cytosine (C) is mistakenly paired with Thymine (T). The enzyme would then replace Thymine with Guanine (G), resulting in a correct pair between Cytosine (C) and Guanine (G).