Ser_01372 K00872 thrB R01771ATP + L-Homoserine <=> ADP + O-Phospho-L-homoserine
ATP:L-homoserine O-phosphotransferase Ser_01373 K00003 hom R01773L-Homoserine + NAD+ <=> L-Aspartate 4-semialdehyde + NADH + H+
L-homoserine:NAD+ oxidoreductase Ser_01373 K00003 hom R01775L-Homoserine + NADP+ <=> L-Aspartate 4-semialdehyde + NADPH + H+
L-homoserine:NADP+ oxidoreductase