2.5.1.21: squalene synthase
This is an abbreviated version!
For detailed information about squalene synthase, go to the full flat file.
Word Map on EC 2.5.1.21
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2.5.1.21
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farnesylation
-
cholesterol
-
prenylation
-
sterol
-
ftase
-
mevalonate
-
geranylgeranylation
-
isoprenoids
-
leukemia
-
geranylgeranyltransferase
-
pyrophosphate
-
tipifarnib
-
hmg-coa
-
statin
-
h-ras
-
peptidomimetic
-
epoxidase
-
prenyltransferase
-
dolichols
-
rhob
-
isoprenylation
-
triterpene
-
farnesol
-
3-hydroxy-3-methylglutaryl
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lamins
-
ergosterol
-
cholesterol-lowering
-
hmgcr
-
prelamin
-
p21ras
-
lovastatin
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hutchinson-gilford
-
lanosterol
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manumycin
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triterpenoids
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synthesis
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progerin
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farnesylpyrophosphate
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cis-prenyltransferase
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drug development
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oxidosqualene
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ras-transformed
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medicine
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ras-dependent
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nonsterols
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ras-mediated
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withanolides
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srebp-2
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ganoderic
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agriculture
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geranylgeraniol
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industry
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cycloartenol
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non-thiol
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2,3-oxidosqualene
- 2.5.1.21
-
farnesylation
- cholesterol
-
prenylation
- sterol
- ftase
- mevalonate
-
geranylgeranylation
-
isoprenoids
- leukemia
-
geranylgeranyltransferase
- pyrophosphate
- tipifarnib
- hmg-coa
- statin
- h-ras
-
peptidomimetic
-
epoxidase
- prenyltransferase
- dolichols
- rhob
-
isoprenylation
-
triterpene
- farnesol
-
3-hydroxy-3-methylglutaryl
- lamins
- ergosterol
-
cholesterol-lowering
- hmgcr
-
prelamin
-
p21ras
- lovastatin
-
hutchinson-gilford
- lanosterol
- manumycin
-
triterpenoids
- synthesis
-
progerin
-
farnesylpyrophosphate
- cis-prenyltransferase
- drug development
- oxidosqualene
-
ras-transformed
- medicine
-
ras-dependent
-
nonsterols
-
ras-mediated
-
withanolides
- srebp-2
-
ganoderic
- agriculture
- geranylgeraniol
- industry
- cycloartenol
-
non-thiol
- 2,3-oxidosqualene
Reaction
2 (2E,6E)-farnesyl diphosphate + + = + 2 diphosphate +
Synonyms
BbSS, BSS, CrSQS, dt-ySQase, Erg9, EtSS, farnesyl-diphosphate farnesyltransferase, farnesyl-diphosphate:farnesyldiphosphate farnesyltransferase, farnesyldiphosphate farnesyltransferase 1, farnesyldiphosphate:farnesyldiphosphate farnesyltransferase, farnesyltransferase, FDFT1, hSQS, presqualene synthase, presqualene-diphosphate synthase, SgSQS, SQase, SQS, SQS1, SQS2, squalene synthase, squalene synthase 1, squalene synthase 2, squalene synthetase, SS1, SSase, SSN, synthase, squalene, TkSQS1, TkSQS2
ECTree
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Natural Substrates Products
Natural Substrates Products on EC 2.5.1.21 - squalene synthase
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REACTION DIAGRAM
2 farnesyl diphosphate + NADPH + H+
squalene + 2 diphosphate + NADP+
-
-
-
?
diphosphate + presqualene diphosphate
first half-reaction
-
-
?
2 (2E,6E)-farnesyl diphosphate
diphosphate + presqualene diphosphate
-
-
-
?
squalene + 2 diphosphate + NAD(P)+
-
-
-
-
?
2 (2E,6E)-farnesyl diphosphate + NAD(P)H + H+
squalene + 2 diphosphate + NAD(P)+
-
-
-
?
2 (2E,6E)-farnesyl diphosphate + NAD(P)H + H+
squalene + 2 diphosphate + NAD(P)+
-
-
-
?
squalene + 2 diphosphate + NADP+
-
-
-
?
2 (2E,6E)-farnesyl diphosphate + NADPH + H+
squalene + 2 diphosphate + NADP+
-
-
-
?
2 (2E,6E)-farnesyl diphosphate + NADPH + H+
squalene + 2 diphosphate + NADP+
-
-
-
?
2 (2E,6E)-farnesyl diphosphate + NADPH + H+
squalene + 2 diphosphate + NADP+
-
-
-
?
2 (2E,6E)-farnesyl diphosphate + NADPH + H+
squalene + 2 diphosphate + NADP+
-
-
-
?
2 (2E,6E)-farnesyl diphosphate + NADPH + H+
squalene + 2 diphosphate + NADP+
-
-
-
?
2 (2E,6E)-farnesyl diphosphate + NADPH + H+
squalene + 2 diphosphate + NADP+
-
-
-
-
?
2 (2E,6E)-farnesyl diphosphate + NADPH + H+
squalene + 2 diphosphate + NADP+
-
-
-
?
2 (2E,6E)-farnesyl diphosphate + NADPH + H+
squalene + 2 diphosphate + NADP+
-
-
-
-
?
2 (2E,6E)-farnesyl diphosphate + NADPH + H+
squalene + 2 diphosphate + NADP+
-
-
-
?
2 (2E,6E)-farnesyl diphosphate + NADPH + H+
squalene + 2 diphosphate + NADP+
overall reaction
-
-
?
2 (2E,6E)-farnesyl diphosphate + NADPH + H+
squalene + 2 diphosphate + NADP+
overall reaction
-
-
?
2 (2E,6E)-farnesyl diphosphate + NADPH + H+
squalene + 2 diphosphate + NADP+
-
-
-
?
2 (2E,6E)-farnesyl diphosphate + NADPH + H+
squalene + 2 diphosphate + NADP+
-
-
-
?
2 (2E,6E)-farnesyl diphosphate + NADPH + H+
squalene + 2 diphosphate + NADP+
-
-
-
?
2 (2E,6E)-farnesyl diphosphate + NADPH + H+
squalene + 2 diphosphate + NADP+
-
squalene synthase catalyzes the first enzymatic step from the central isoprenoid pathway toward sterol and triterpenoid biosynthesis
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-
?
2 (2E,6E)-farnesyl diphosphate + NADPH + H+
squalene + 2 diphosphate + NADP+
-
-
-
?
2 (2E,6E)-farnesyl diphosphate + NADPH + H+
squalene + 2 diphosphate + NADP+
-
-
-
?
2 (2E,6E)-farnesyl diphosphate + NADPH + H+
squalene + 2 diphosphate + NADP+
-
-
-
?
2 (2E,6E)-farnesyl diphosphate + NADPH + H+
squalene + 2 diphosphate + NADP+
the enzyme catalyzes the first dedicated step in the biosynthesis of sterols and other triterpenoids
-
-
?
2 (2E,6E)-farnesyl diphosphate + NADPH + H+
squalene + 2 diphosphate + NADP+
-
-
-
?
2 (2E,6E)-farnesyl diphosphate + NADPH + H+
squalene + 2 diphosphate + NADP+
overall reaction
-
-
?
2 (2E,6E)-farnesyl diphosphate + NADPH + H+
squalene + 2 diphosphate + NADP+
overall reaction
-
-
?
2 (2E,6E)-farnesyl diphosphate + NADPH + H+
squalene + 2 diphosphate + NADP+
Thermosynechococcus vestitus
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-
-
-
?
2 (2E,6E)-farnesyl diphosphate + NADPH + H+
squalene + 2 diphosphate + NADP+
the enzyme is involved in celastrol biosynthesis
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-
?
2 (2E,6E)-farnesyl diphosphate + NADPH + H+
squalene + 2 diphosphate + NADP+
-
-
-
?
2 (2E,6E)-farnesyl diphosphate + NADPH + H+
squalene + 2 diphosphate + NADP+
overall reaction
-
-
?
diphosphate + presqualene diphosphate
-
enzyme may be important during response to infection and inflammation
-
-
?
farnesyl diphosphate + farnesyl diphosphate
diphosphate + presqualene diphosphate
-
first pathway-specific enzyme in cholesterol biosynthesis
-
-
?
farnesyl diphosphate + farnesyl diphosphate
diphosphate + presqualene diphosphate
-
squalene is the first sterol intermediate in cholesterol biosynthesis
-
-
?
farnesyl diphosphate + farnesyl diphosphate
diphosphate + presqualene diphosphate
-
enzyme may be important during response to infection and inflammation
-
-
?
farnesyl diphosphate + farnesyl diphosphate
diphosphate + presqualene diphosphate
-
-
-
-
?
farnesyl diphosphate + farnesyl diphosphate
diphosphate + presqualene diphosphate
-
first pathway-specific enzyme in cholesterol biosynthesis
-
-
?
farnesyl diphosphate + farnesyl diphosphate
diphosphate + presqualene diphosphate
-
essential enzyme in cholesterol biosynthetic pathway
-
-
?
squalene + diphosphate + NAD(P)+
-
-
-
-
?
presqualene diphosphate + NAD(P)H + H+
squalene + diphosphate + NAD(P)+
-
-
-
-
?
presqualene diphosphate + NAD(P)H + H+
squalene + diphosphate + NAD(P)+
-
-
-
-
?
presqualene diphosphate + NAD(P)H + H+
squalene + diphosphate + NAD(P)+
-
-
-
-
?
presqualene diphosphate + NAD(P)H + H+
squalene + diphosphate + NAD(P)+
-
-
-
-
?
squalene + diphosphate + NADP+
second half reaction
-
-
?
presqualene diphosphate + NADPH + H+
squalene + diphosphate + NADP+
-
-
-
-
?
presqualene diphosphate + NADPH + H+
squalene + diphosphate + NADP+
-
-
-
?
?
-
squalene and botryococcene are branched-chain, triterpene compounds that arise from the head-to-head condensation of two molecules of farnesyl diphosphate to yield 1'-1 and 1'-3 linkages, respectively. Different enzymes are responsible for botryococcene and squalene biosynthesis in the green alga Botryococcus braunii race B. The specificity for the 1'-1 and 1'-3 linkages is controlled by residues in the active sites that can mediate catalytic specificity. Identification of several amino acid positions contributing to the rearrangement of the cyclopropyl intermediate to squalene, The same positions do not appear to be sufficient to account for the cyclopropyl rearrangement to give botryococcene, oerview
-
-
?
additional information
?
-
-
squalene and botryococcene are branched-chain, triterpene compounds that arise from the head-to-head condensation of two molecules of farnesyl diphosphate to yield 1'-1 and 1'-3 linkages, respectively. Different enzymes are responsible for botryococcene and squalene biosynthesis in the green alga Botryococcus braunii race B. The specificity for the 1'-1 and 1'-3 linkages is controlled by residues in the active sites that can mediate catalytic specificity. Identification of several amino acid positions contributing to the rearrangement of the cyclopropyl intermediate to squalene, The same positions do not appear to be sufficient to account for the cyclopropyl rearrangement to give botryococcene, oerview
-
-
?
additional information
?
-
the catalytic process involves two reactions: firstly, two FPP molecules are condensed to form presqualene diphosphate (PSPP), an intermediate with a cyclopropane C1'-C2-C3 ring structure, and secondly, PSPP undergoes a NADPH-dependent rearrangement and reduction to generate the end product squalene
-
-
?
additional information
?
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-
the catalytic process involves two reactions: firstly, two FPP molecules are condensed to form presqualene diphosphate (PSPP), an intermediate with a cyclopropane C1'-C2-C3 ring structure, and secondly, PSPP undergoes a NADPH-dependent rearrangement and reduction to generate the end product squalene
-
-
?
additional information
?
-
enzyme is key regulator not only for phytosterol but also for triterpene biosynthesis
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-
?
additional information
?
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-
enzyme is key regulator not only for phytosterol but also for triterpene biosynthesis
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-
?