Reaction catalyzed by 3-methyl-2-oxobutanoate hydroxymethyltransferase (2.1.2.11)
+
=
+
+
H2O
tetrahydropteroyldiglutamate
+
2-dehydropantoate
=
5,10-methylenetetrahydropteroyldiglutamate
+
3-methyl-2-oxobutanoate
+
H2O