5-methylbarbiturate + AH2 + H(+) => thymine + A + H2O
5-methylbarbiturate + ah2 + h(+) => thymine + a + h2o
5-methylbarbiturate + AH2 + H(+) => thymine + A + H2O
5-methylbarbiturate + ah2 + h(+) => thymine + a + h2o