Suggested Reaction 1.5.1.-

Left

2-Amino-4-hydroxy-6-(D-erythro-1,2,3-trihydroxypropyl)-7,8- dihydropteridine
+NAD+

Right

6-(D-erythro-1,2,3-Trihydroxypropyl)pterin
+NADH
+H+

[BiSSCat | GREP ]