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Methylmalonate-
semialdehyde
dehydrogenase
[acylating],
mitochondrial
NADP-dependent
glyceraldehyde-
3-phosphate
dehydrogenase
Aspartokinase
Aspartate
aminotransferase
3,
chloroplastic
Aspartokinase
1,
chloroplastic
Aspartokinase
2,
chloroplastic
Threonine
synthase 1,
chloroplastic
Threonine
dehydratase
biosynthetic,
chloroplastic
Aspartate
semialdehyde
dehydrogenase
Homoserine
kinase
Probable
low-specificity
L-threonine
aldolase 1
Acetaldehyde
Acetaldehyde
NAD
CoA
NADH
H
+
Acetyl-CoA
CoA
NAD
NADH
H
+
Acetyl-CoA
L-Aspartic acid
ATP
ADP
L-Aspartyl-4-
phosphate
Oxalacetic acid
L-Glutamic acid
Oxoglutaric
acid
L-Aspartate-
semialdehyde
H
+
NADPH
NADP
L-Homoserine
O-
Phosphohomoserine
H
2
O
P
i
L-Threonine
H
+
H
2
O
(2Z)-2-
aminobut-2-
enoate
2-
iminobutanoate
H
2
O
H
+
Ammonium
2-Ketobutyric
acid
NADPH
H
+
P
i
NADP
ATP
ADP
H
+
Glycine
Mitochondria
Chloroplast
ALDH6B2
ALDH11A3
HOM3
ASP3
AK1
AK2
TS1
OMR1
Unknown
Unknown
THA1
Acetaldehyde
Acetaldehyde
NAD
Coenzyme A
NADH
Hydrogen Ion
Acetyl-CoA
Coenzyme A
NAD
NADH
Hydrogen Ion
Acetyl-CoA
L-Aspartic acid
Adenosine
triphosphate
Adenosine
diphosphate
L-Aspartyl-4-
phosphate
Oxalacetic acid
L-Glutamic acid
Oxoglutaric
acid
L-Aspartate-
semialdehyde
Hydrogen Ion
NADPH
NADP
L-Homoserine
O-
Phosphohomoserine
Water
Phosphate
L-Threonine
Hydrogen Ion
Water
(2Z)-2-
aminobut-2-
enoate
2-
iminobutanoate
Water
Hydrogen Ion
Ammonium
2-Ketobutyric
acid
NADPH
Hydrogen Ion
Phosphate
NADP
Adenosine
triphosphate
Adenosine
diphosphate
Hydrogen Ion
Glycine