1,N(2)-ethenoguanine + O2 + H2O <=> 2-oxo-ethenoguanine + H2O2
1,n(2)-ethenoguanine + o2 + h2o <=> 2-oxo-ethenoguanine + h2o2
1,N(2)-ethenoguanine + O2 + H2O <=> 2-oxo-ethenoguanine + H2O2
1,n(2)-ethenoguanine + o2 + h2o <=> 2-oxo-ethenoguanine + h2o2