4-hydroxy-tetrahydrodipicolinate synthase
Hydrogen Ion + L-Aspartate-semialdehyde + NADPH → L-Homoserine + NADP
L-Aspartate-semialdehyde + Pyruvic acid ↔ L-2,3-Dihydrodipicolinate + 2 Water
Adenosine triphosphate + L-Aspartic acid → Adenosine diphosphate + L-Aspartyl-4-phosphate
Adenosine triphosphate + L-Homoserine → Adenosine diphosphate + Hydrogen Ion + O-Phosphohomoserine
Hydrogen Ion + L-Aspartyl-4-phosphate + NADPH → L-Aspartate-semialdehyde + NADP + Phosphate
O-Phosphohomoserine + Water → L-Threonine + Phosphate
aspartate kinase / homoserine dehydrogenase
Secondary Metabolites: Threonine Biosynthesis from Aspartate