Information on EC 1.1.1.B57 - 1-tetralone reductase [NADPH]

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The expected taxonomic range for this enzyme is: Pyrobaculum aerophilum

EC NUMBER
COMMENTARY hide
1.1.1.B57
preliminary BRENDA-supplied EC number
RECOMMENDED NAME
GeneOntology No.
1-tetralone reductase [NADPH]
-
REACTION
REACTION DIAGRAM
COMMENTARY hide
ORGANISM
UNIPROT
LITERATURE
1-tetralone + NADPH + H+ = 1-tetralol + NADP+
show the reaction diagram
-
-
-
-
SYSTEMATIC NAME
IUBMB Comments
1-tetralol:NADP+ oxidoreductase
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ORGANISM
COMMENTARY hide
LITERATURE
UNIPROT
SEQUENCE DB
SOURCE
SUBSTRATE
PRODUCT                       
REACTION DIAGRAM
ORGANISM
UNIPROT
COMMENTARY
(Substrate) hide
LITERATURE
(Substrate)
COMMENTARY
(Product) hide
LITERATURE
(Product)
Reversibility
r=reversible
ir=irreversible
?=not specified
1-tetralone + NADPH + H+
1-tetralol + NADP+
show the reaction diagram
3,4-dihydro-1(2H)-naphthalenone + NADPH + H+
1,2,3,4-tetrahydronaphthalen-1-ol + NADP+
show the reaction diagram
COFACTOR
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
IMAGE
METALS and IONS
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
Zn2+
-
important for activity
INHIBITORS
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
IMAGE
1-[2-(diphenylmethoxy)ethyl]-4-[(2E)-3-phenylprop-2-en-1-yl]piperazine
-
i.e. GBR12783
1-[2-[bis(4-fluorophenyl)methoxy]ethyl]-4-[(2E)-3-phenylprop-2-en-1-yl]piperazine
-
-
1-[bis(4-fluorophenyl)methyl]-4-[(2E)-3-phenylprop-2-en-1-yl]piperazine
-
i.e. flunarizine
EDTA
-
1 mM, 20% decrease in activity
KM VALUE [mM]
SUBSTRATE
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
IMAGE
2.4
3,4-dihydro-1(2H)-naphthalenone
-
95°C, pH 7.5
TURNOVER NUMBER [1/s]
SUBSTRATE
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
IMAGE
1719
3,4-dihydro-1(2H)-naphthalenone
Pyrobaculum aerophilum
-
95°C, pH 7.5
IC50 VALUE [mM]
INHIBITOR
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
IMAGE
0.04
1-[2-(diphenylmethoxy)ethyl]-4-[(2E)-3-phenylprop-2-en-1-yl]piperazine
Pyrobaculum aerophilum
-
pH 7.5, 37°C
0.01
1-[2-[bis(4-fluorophenyl)methoxy]ethyl]-4-[(2E)-3-phenylprop-2-en-1-yl]piperazine
Pyrobaculum aerophilum
-
pH 7.5, 37°C
0.04
1-[bis(4-fluorophenyl)methyl]-4-[(2E)-3-phenylprop-2-en-1-yl]piperazine
Pyrobaculum aerophilum
-
pH 7.5, 37°C
SPECIFIC ACTIVITY [µmol/min/mg]
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
3
-
60°C, pH 7.5
50
-
95°C, pH 7.5
TEMPERATURE OPTIMUM
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
95
-
reaction rate increases with temperature up to 95°C
MOLECULAR WEIGHT
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
38580
-
x * 38580, calculated from sequence
40000
-
x * 40000, SDS-PAGE
SUBUNITS
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
Crystallization/COMMENTARY
ORGANISM
UNIPROT
LITERATURE
crystal structure of both wild-type and cobalt-substituted enzyme at 1.75 A and 2.20 A resolution, respectively. One metal ion per monomer is present only at the structural site. The co-crystal structure of the NADPH-bound form of the enzyme at 2.35 A resolution shows close structural conservation with horse ADH, despite the lack of a catalytic Zn2+. Modeling of 1-tetralone into the NADPH-bound structure suggests an arginine as a possible catalytic residue
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GENERAL STABILITY
ORGANISM
UNIPROT
LITERATURE
Zn2+ is not essential for structural stability of the enzyme
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Purification/COMMENTARY
ORGANISM
UNIPROT
LITERATURE
Cloned/COMMENTARY
ORGANISM
UNIPROT
LITERATURE
overexpression in Escherichia coli
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APPLICATION
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
analysis