Escherichia coli MutY is an adenine DNA glycosylase active on DNA substrates containing A/G, A/8-oxoG, or A/C mismatches and also has a weak guanine glycosylase activity on G/8-oxoG-containing DNA.
The N-terminal domain of MutY, residues 1-226, has been shown to retain catalytic activity.
The post-replicative adenine:8-oxo-7,8- dihydroguanine (GO) mismatch is crucial for G:C to T:A transversion.
This mismatch is corrected by Escherichia coli MutY which excises the adenine from A:GO.
A candidate gene coding for the human counterpart of MutYhas been cloned as hMYH (535 aa) (1).
Applications:Suitable for use in ELISA, Western Blotting.