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4-Phospho-D-
erythronate
Glyceraldehyde-
3-phosphate
dehydrogenase 1
Formate
dehydrogenase 2
3-phosphoserine
aminotransferase
/
phosphohydroxythreonine
aminotransferase
4-hydroxy-L-
threonine
phosphate
dehydrogenase,
NAD-dependent
Pyridoxal
kinase
Pyridoxine
5'-phosphate
oxidase
Pyridoxine
5'-phosphate
oxidase
Pyridoxal
kinase
1-
deoxyxylulose-
5-phosphate
synthase
D-Erythrose
4-phosphate
NAD
H
2
O
NADH
H
+
NAD
NADH
H
+
2-Oxo-3-
hydroxy-4-
phosphobutanoic
acid
L-Glutamic acid
O-Phospho-4-
hydroxy-L-
threonine
Oxoglutaric
acid
NAD
NADH
H
+
2-Amino-3-
oxo-4-
phosphonooxybutyrate
H
+
2-Amino-3-
phosphonopropionic
acid
CO
2
1-Deoxy-D-
xylulose
5-phosphate
Pyridoxine
5'-phosphate
P
i
H
+
H
2
O
Pyridoxine
ATP
ADP
H
+
O
2
Pyridoxal
5'-phosphate
H
2
O
2
Pyridoxal
ATP
ADP
Pyridoxamine
5'-phosphate
O
2
H
2
O
H
2
O
2
Ammonium
Pyridoxamine
ATP
ADP
D-
Glyceraldehyde
3-phosphate
Pyruvic acid
H
+
CO
2
Pyridoxine
5'-phosphate
synthase
Pyridoxal
kinase
VITAMIN B6
Spontaneous
Reversible
4-Phospho-D-
erythronate
TDH1
FDH2
Unknown
Unknown
Unknown
Unknown
Unknown
Unknown
Unknown
D-Erythrose
4-phosphate
NAD
Water
NADH
Hydrogen Ion
NAD
NADH
Hydrogen Ion
2-Oxo-3-
hydroxy-4-
phosphobutanoic
acid
L-Glutamic acid
O-Phospho-4-
hydroxy-L-
threonine
Oxoglutaric
acid
NAD
NADH
Hydrogen Ion
2-Amino-3-
oxo-4-
phosphonooxybutyrate
Hydrogen Ion
2-Amino-3-
phosphonopropionic
acid
Carbon dioxide
1-Deoxy-D-
xylulose
5-phosphate
Pyridoxine
5'-phosphate
Phosphate
Hydrogen Ion
Water
Pyridoxine
Adenosine
triphosphate
Adenosine
diphosphate
Hydrogen Ion
Oxygen
Pyridoxal
5'-phosphate
Hydrogen
peroxide
Pyridoxal
Adenosine
triphosphate
Adenosine
diphosphate
Pyridoxamine
5'-phosphate
Oxygen
Water
Hydrogen
peroxide
Ammonium
Pyridoxamine
Adenosine
triphosphate
Adenosine
diphosphate
D-
Glyceraldehyde
3-phosphate
Pyruvic acid
Hydrogen Ion
Carbon dioxide
Unknown
Unknown