Information on EC 1.3.1.96 - Botryococcus squalene synthase

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The expected taxonomic range for this enzyme is: Botryococcus braunii

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EC NUMBER
COMMENTARY hide
1.3.1.96
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RECOMMENDED NAME
GeneOntology No.
Botryococcus squalene synthase
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REACTION
REACTION DIAGRAM
COMMENTARY hide
ORGANISM
UNIPROT
LITERATURE
squalene + diphosphate + NADP+ = presqualene diphosphate + NADPH + H+
show the reaction diagram
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PATHWAY
BRENDA Link
KEGG Link
MetaCyc Link
botryococcenes and methylated squalene biosynthesis
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SYSTEMATIC NAME
IUBMB Comments
squalene:NADP+ oxidoreductase
Isolated from the green alga Botryococcus braunii BOT22. Acts in the reverse direction. cf. EC 2.5.1.21, squalene synthase, where squalene is formed directly from farnesyl diphosphate.
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ORGANISM
COMMENTARY hide
LITERATURE
UNIPROT
SEQUENCE DB
SOURCE
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GENERAL INFORMATION
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
metabolism
SSL-2 catalyzes the NADPH-dependent biosynthesis of approximately 90% bisfarnesyl ether and 10% squalene
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SUBSTRATE
PRODUCT                       
REACTION DIAGRAM
ORGANISM
UNIPROT
COMMENTARY
(Substrate) hide
LITERATURE
(Substrate)
COMMENTARY
(Product) hide
LITERATURE
(Product)
Reversibility
r=reversible
ir=irreversible
?=not specified
presqualene diphosphate + NADPH + H+
squalene + diphosphate + NADP+
show the reaction diagram
additional information
?
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COFACTOR
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
IMAGE
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METALS and IONS
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
Co2+
-
required for activity
Mg2+
-
required for activity
Mn2+
-
required for activity
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INHIBITORS
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
IMAGE
squalestatin
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ACTIVATING COMPOUND
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
IMAGE
Tween 80
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increasing concentrations of Tween 80 up to 2% enhance enzyme activity approximately 2.5fold
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Ki VALUE [mM]
INHIBITOR
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
IMAGE
0.000001
squalestatin
-
at pH 7.3 and 37�C
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pH OPTIMUM
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
7.3
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in MOPS buffer
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TEMPERATURE OPTIMUM
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
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LOCALIZATION
ORGANISM
UNIPROT
COMMENTARY hide
GeneOntology No.
LITERATURE
SOURCE
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MOLECULAR WEIGHT
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
52500
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x * 52500, calculated from amino acid sequence and estimated from SDS-PAGE
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SUBUNITS
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
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Cloned/COMMENTARY
ORGANISM
UNIPROT
LITERATURE
expressed in Escherichia coli BL21(DE3) cells
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LINKS TO OTHER DATABASES (specific for EC-Number 1.3.1.96)
ExplorEnz
ExPASy
KEGG
MetaCyc
SABIO-RK
NCBI: PubMed, Protein, Nucleotide, Structure, Genome, OMIM
IUBMB Enzyme Nomenclature
PROSITE Database of protein families and domains
InterPro (database of protein families, domains and functional sites)