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3-ketoacyl-CoA
synthase ELO1
Acyl-CoA
synthase
Acyl-CoA
synthase
Acyl-CoA
synthase
Acyl-CoA
synthase
Acyl-CoA
synthase
3-oxoacyl-
[acyl- carrier-
protein]
reductase
Peroxisomal
hydratase-
dehydrogenase-
epimerase
dihydrosphingosine
C-4 hydroxylase
3-
ketosphinganine
reductase
Ceramide
synthase
subunit LIP1
Serine
palmitoyltransferase
1
2-enoyl
thioester
reductase
Palmityl-CoA
Malonyl-CoA
H
+
CO
2
3-
Oxooctadecanoyl-
CoA
CoA
Palmitic acid
ATP
CoA
AMP
PP
i
H
+
NADPH
NADP
(3R)-3-
hydroxy-
stearoyl-CoA
(2E)-
Octadecenoyl-
CoA
H
2
O
H
+
O
2
Sphinganine
H
2
O
Phytosphingosine
H
+
NADPH
3-
Dehydrosphinganine
NADP
Stearoyl-CoA
CoA
H
+
N-
stearoylphytosphingosine
Palmityl-CoA
L-Serine
CO
2
H
+
NADPH
NADP
ferrocytochrome
b5
ferricytochrome
b5
Unknown
Unknown
Unknown
Unknown
Unknown
Unknown
Unknown
Unknown
Unknown
Unknown
LIP1
LCB1
Unknown
Palmityl-CoA
Malonyl-CoA
Hydrogen Ion
Carbon dioxide
3-
Oxooctadecanoyl-
CoA
Coenzyme A
Palmitic acid
Adenosine
triphosphate
Coenzyme A
Adenosine
monophosphate
Pyrophosphate
Hydrogen Ion
NADPH
NADP
(3R)-3-
hydroxy-
stearoyl-CoA
(2E)-
Octadecenoyl-
CoA
Water
Hydrogen Ion
Oxygen
Sphinganine
Water
Phytosphingosine
Hydrogen Ion
NADPH
3-
Dehydrosphinganine
NADP
Stearoyl-CoA
Coenzyme A
Hydrogen Ion
N-
stearoylphytosphingosine
Palmityl-CoA
L-Serine
Carbon dioxide
Hydrogen Ion
NADPH
NADP
ferrocytochrome
b5
ferricytochrome
b5