Reaction catalyzed by 3-deoxy-7-phosphoheptulonate synthase (2.5.1.54)
+
+
H2O
=
+
phosphoenolpyruvate
+
D-erythrose 4-phosphate
+
H2O
=
3-deoxy-D-arabino-hept-2-ulosonate 7-phosphate
+
phosphate
