毒理性
二氢嘧啶脱氢酶催化胸腺嘧啶还原为5,6-二氢胸腺嘧啶,然后二氢嘧啶酶将5,6-二氢胸腺嘧啶水解为N-甲酰基-b-丙氨酸。最后,尿素丙酸酶催化N-甲酰基-b-丙氨酸转化为b-丙氨酸。体内二氢胸腺嘧啶的积累已被证明是有毒的。
Dihydropyrimidine dehydrogenase catalyzes the reduction of thymine to 5, 6-dihydrothymine then dihydropyrimidinase hydrolyzes 5, 6-dihydrothymine to N-carbamyl-b-alanine. Finally, beta-ureidopropionase catalyzes the conversion of N-carbamyl-b-alanine to beta-alanine. Accumulation of dihydrothymine in the body has been shown to be toxic.
来源:Toxin and Toxin Target Database (T3DB)