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O. F. H. N 3. O. H. N 1. dRib P. The synthesis of thymine by thymidilate synthetase. O. H. N. N. H 2 N. H. H. CH 2. +. N 3. N 5 , N 10 -Methylene tetrahydrofolate. H. N. H. H. CH 2. O. N. N 1. O. 2 HC. N. dRib P. dUMP. R. thymidilate synthetase. FdUMP.
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O F H N3 O H N1 dRib P The synthesis of thymine by thymidilate synthetase O H N N H2N H H CH2 + N3 N5, N10-Methylene tetrahydrofolate H N H H CH2 O N N1 O 2HC N dRib P dUMP R thymidilate synthetase FdUMP Methyltransferase O H N N tetrahydrofolate CH3 H2N H CH2 N3 N H CH2 O H N N1 O NH dRib P DHFR R dTMP dihydrofolate FdUMP DHFR Antifolates Aminopterin Methotrexate Trimethoprim Folate diet Sulfonamides de novo synthesis inbacteria (pp 762-764 V&V)