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squalene
synthase 1
squalene
synthase 1
squalene
monooxygenase 1
Beta-amyrin
synthase
Alpha-amyrin
synthase
Amyrin synthase
LUP2
Lupan-
3beta,20-diol
synthase
Alpha-seco-
amyrin synthase
Beta-seco-
amyrin synthase
Tirucalladienol
synthase
Baruol synthase
Unknown
Thalianol
synthase
Camelliol C
synthase
Arabidiol
synthase
Marneral
synthase
sesquiterpene
synthase
(S)-2,3-
Epoxysqualene
Farnesyl
pyrophosphate
PP
i
Presqualene
diphosphate
NADPH
H
+
PP
i
Squalene
NADP
O
2
H
2
O
β-Amyrin
α-Amyrin
Lupeol
H
2
O
Lupan-3β,20-
diol
α-seco-amyrin
β-seco-amyrin
Tirucalla-
7,24-dien-3β-
ol
Baruol
Thalianol
Camelliol C
H
2
O
Arabidiol
Marneral
Magnesium
Magnesium
FAD
[Reduced
NADPH---
hemoprotein
reductase]
[Oxidized
NADPH---
hemoprotein
reductase]
Chair-chair-
chair-chair
Triterpenoid
Sesquiterpenoid
Steroid
Biosynthesis
Terpenoid
Backbone
Biosynthesis
Endoplasmic Reticulum
Cytosol
Endoplasmic Reticulum
SQS1
SQS1
SQE1
BAS
LUP2
LUP2
LUP1
Unknown
Unknown
PEN3
BARS1
Unknown
THAS1
CAMS1
PEN1
Unknown
AT5G44630
(S)-2,3-
Epoxysqualene
Farnesyl
pyrophosphate
Pyrophosphate
Presqualene
diphosphate
NADPH
Hydrogen Ion
Pyrophosphate
Squalene
NADP
Oxygen
Water
β-Amyrin
α-Amyrin
Lupeol
Water
Lupan-3β,20-
diol
α-seco-amyrin
β-seco-amyrin
Tirucalla-
7,24-dien-3β-
ol
Baruol
Thalianol
Camelliol C
Water
Arabidiol
Marneral
[Reduced
NADPH---
hemoprotein
reductase]
[Oxidized
NADPH---
hemoprotein
reductase]
Chair-chair-
chair-chair
Triterpenoid
Sesquiterpenoid
Steroid
Biosynthesis
Terpenoid
Backbone
Biosynthesis