L-Serine (→), Hydrogen Ion (→) Transport: Escherichia coli, Periplasmic Space to Escherichia coli, Cytosol
2-Aminoacrylic acid → 2-iminopropanoate
2-iminopropanoate + Hydrogen Ion + Water → Ammonium + Pyruvic acid
D-3-phosphoglycerate dehydrogenase / α-ketoglutarate reductase
3-phosphoserine aminotransferase / phosphohydroxythreonine aminotransferase
L-Serine → 2-Aminoacrylic acid + Hydrogen Ion + Water
Coenzyme A + NAD + Pyruvic acid → Acetyl-CoA + Carbon dioxide + NADH
Phosphonates-binding periplasmic protein
DL-O-Phosphoserine + Water → L-Serine + Phosphate
3-Phosphoglyceric acid + NAD → Hydrogen Ion + NADH + Phosphohydroxypyruvic acid
L-Glutamic acid + Phosphohydroxypyruvic acid → DL-O-Phosphoserine + Oxoglutaric acid
Phosphonates import ATP-binding protein PhnC
Adenosine triphosphate + DL-O-Phosphoserine + Water → Adenosine diphosphate + DL-O-Phosphoserine + Hydrogen Ion + Phosphate
Putative phosphonates transport system permease protein phnE