part of part of has input has input has output has output process reaction 4-(phosphonooxy)-L-threonine + NAD(+) = 2-amino-3-oxo-4-phosphonooxybutyrate + H(+) + NADH 1 1 1 1 1 1 KEGG:R05681 METACYC:1.1.1.262-RXN UPa:UCR05681 RHEA:14456 reaction pyridoxine 5'-phosphate from D-erythrose 4-phosphate: step 4/5 NAD(+) NADH H(+) 4-(phosphonooxy)-L-threonine 2-amino-3-oxo-4-phosphonooxybutyrate