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1-(2-hydroxyethyl)amino-1-deoxy-D-sorbitol + acceptor
6-(2-hydroxyethyl)amino-6-deoxy-L-sorbose + reduced acceptor
1-benzyloxycarbonylamino-1-deoxy-D-sorbitol + acceptor
N-benzyloxycarbonyl-6-amino-L-sorbose + reduced acceptor
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Substrates: -
Products: -
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D-arabitol + acceptor
D-xylulose + reduced acceptor
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Substrates: -
Products: -
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D-glucitol + NAD+
D-fructose + NADH + H+
D-gluconate + acceptor
5-keto-D-gluconate + reduced acceptor
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Substrates: -
Products: -
?
D-mannitol + acceptor
? + reduced acceptor
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Substrates: oxidation at 5% the rate of D-sorbitol
Products: -
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D-mannitol + acceptor
D-fructose + reduced acceptor
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Substrates: -
Products: -
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D-sorbitol + acceptor
L-sorbose + reduced acceptor
D-sorbitol + NADP+
L-sorbose + NADPH
D-sorbitol + phenazine methosulfate
?
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Substrates: the catalytic reaction follows an ordered Bi Bi mechanism, the native mSLDH bears two different substrate-binding sites, one for ubiquinone using as electron acceptor and the other for D-sorbitol, in addition to PQQ-binding and Mg2+-binding sites in the catalytic center
Products: -
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D-sorbitol + ubiquinone-2
?
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Substrates: -
Products: -
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glycerol + acceptor
dihydroxyacetone + reduced acceptor
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Substrates: -
Products: -
?
L-glucitol + NAD+
D-sorbose + NADH + H+
meso-erythritol + acceptor
L-erythrulose + reduced acceptor
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Substrates: -
Products: -
?
ribitol + acceptor
? + reduced acceptor
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Substrates: -
Products: -
?
additional information
?
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1-(2-hydroxyethyl)amino-1-deoxy-D-sorbitol + acceptor
6-(2-hydroxyethyl)amino-6-deoxy-L-sorbose + reduced acceptor
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Substrates: -
Products: -
?
1-(2-hydroxyethyl)amino-1-deoxy-D-sorbitol + acceptor
6-(2-hydroxyethyl)amino-6-deoxy-L-sorbose + reduced acceptor
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Substrates: -
Products: -
?
D-glucitol + NAD+
D-fructose + NADH + H+
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Substrates: -
Products: -
?
D-glucitol + NAD+
D-fructose + NADH + H+
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Substrates: -
Products: -
?
D-sorbitol + acceptor
L-sorbose + reduced acceptor
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Substrates: -
Products: -
?
D-sorbitol + acceptor
L-sorbose + reduced acceptor
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Substrates: production of L-sorbose is similar in the wild-type strain and the FAD-SLDH defective strain, the enzyme is induced by L-sorbose and by D-sorbitol, FAD-SLDH links preferably to the cyanide-insensitive terminal oxidase
Products: -
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D-sorbitol + acceptor
L-sorbose + reduced acceptor
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Substrates: production of L-sorbose is similar in the wild-type strain and the FAD-SLDH defective strain, the enzyme is induced by L-sorbose and by D-sorbitol, FAD-SLDH links preferably to the cyanide-insensitive terminal oxidase
Products: -
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D-sorbitol + acceptor
L-sorbose + reduced acceptor
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Substrates: -
Products: -
?
D-sorbitol + acceptor
L-sorbose + reduced acceptor
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Substrates: -
Products: -
?
D-sorbitol + acceptor
L-sorbose + reduced acceptor
Substrates: -
Products: -
?
D-sorbitol + acceptor
L-sorbose + reduced acceptor
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Substrates: high specificity
Products: -
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D-sorbitol + acceptor
L-sorbose + reduced acceptor
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Substrates: high specificity, the following dyes act in vitro as acceptors: 2,6-dichlorophenolindophenol, phenazine methosulfate, potassium ferricyanide, nitro blue tetrazolium or tetramethyl-p-phenylenediamine
Products: -
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D-sorbitol + acceptor
L-sorbose + reduced acceptor
Substrates: D-sorbitol is oxidized in the periplasm in a chemo-, regio-, and stereoselective manner to L-sorbose by the membrane-bound dehydrogenase
Products: the oxidation product accumulates in the culture medium
?
D-sorbitol + acceptor
L-sorbose + reduced acceptor
Substrates: -
Products: -
?
D-sorbitol + acceptor
L-sorbose + reduced acceptor
Substrates: D-sorbitol is oxidized in the periplasm in a chemo-, regio-, and stereoselective manner to L-sorbose by the membrane-bound dehydrogenase
Products: the oxidation product accumulates in the culture medium
?
D-sorbitol + NADP+
L-sorbose + NADPH
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Substrates: -
Products: -
r
D-sorbitol + NADP+
L-sorbose + NADPH
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Substrates: -
Products: -
r
L-glucitol + NAD+
D-sorbose + NADH + H+
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Substrates: 90% conversion
Products: -
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L-glucitol + NAD+
D-sorbose + NADH + H+
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Substrates: 90% conversion
Products: -
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additional information
?
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Substrates: no oxidation of D-arabitol, L-iditol, meso-erythritol, galactitol, dulcitol, ribitol, xylitol
Products: -
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additional information
?
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Substrates: no oxidation of D-arabitol, L-iditol, meso-erythritol, galactitol, dulcitol, ribitol, xylitol
Products: -
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additional information
?
-
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Substrates: production of 5-keto-D-gluconate is solely dependent on enzyme
Products: -
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additional information
?
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Substrates: this SLDH is distinguished from other L-sorbose-producing enzymes by its high activity and substrate specificity. Isothermal titration calorimetry shows that the protein binds more strongly to D-sorbitol than other L-sorbose-producing enzymes, and substrate docking analysis confirms a higher turnover rate
Products: -
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additional information
?
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Substrates: binding mode of D-sorbitol with sorbitol dehydrogenase using QM-polarized ligand docking and molecular dynamics simulations, His302, Met366, and Asp368 actively participate in D-sorbitol binding, H302 directly forms hydrogen bonds with D-sorbitol and the role of His302 is to hold the D-sorbitol, overview
Products: -
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additional information
?
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Substrates: GoSLDH is highly specific towards D-sorbitol, mannitol, and D-arabinitol (Table S2). No activity is detected with L-arabinitol, xylitol, ribitol, myo-inositol, and glycerol
Products: -
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additional information
?
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Substrates: this SLDH is distinguished from other L-sorbose-producing enzymes by its high activity and substrate specificity. Isothermal titration calorimetry shows that the protein binds more strongly to D-sorbitol than other L-sorbose-producing enzymes, and substrate docking analysis confirms a higher turnover rate
Products: -
?
additional information
?
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Substrates: GoSLDH is highly specific towards D-sorbitol, mannitol, and D-arabinitol (Table S2). No activity is detected with L-arabinitol, xylitol, ribitol, myo-inositol, and glycerol
Products: -
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D-glucitol + NAD+
D-fructose + NADH + H+
D-sorbitol + acceptor
L-sorbose + reduced acceptor
D-sorbitol + NADP+
L-sorbose + NADPH
L-glucitol + NAD+
D-sorbose + NADH + H+
additional information
?
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D-glucitol + NAD+
D-fructose + NADH + H+
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Substrates: -
Products: -
?
D-glucitol + NAD+
D-fructose + NADH + H+
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Substrates: -
Products: -
?
D-sorbitol + acceptor
L-sorbose + reduced acceptor
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Substrates: -
Products: -
?
D-sorbitol + acceptor
L-sorbose + reduced acceptor
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Substrates: -
Products: -
?
D-sorbitol + acceptor
L-sorbose + reduced acceptor
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Substrates: -
Products: -
?
D-sorbitol + acceptor
L-sorbose + reduced acceptor
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Substrates: high specificity
Products: -
?
D-sorbitol + acceptor
L-sorbose + reduced acceptor
Substrates: D-sorbitol is oxidized in the periplasm in a chemo-, regio-, and stereoselective manner to L-sorbose by the membrane-bound dehydrogenase
Products: the oxidation product accumulates in the culture medium
?
D-sorbitol + acceptor
L-sorbose + reduced acceptor
Substrates: D-sorbitol is oxidized in the periplasm in a chemo-, regio-, and stereoselective manner to L-sorbose by the membrane-bound dehydrogenase
Products: the oxidation product accumulates in the culture medium
?
D-sorbitol + NADP+
L-sorbose + NADPH
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Substrates: -
Products: -
r
D-sorbitol + NADP+
L-sorbose + NADPH
-
Substrates: -
Products: -
r
L-glucitol + NAD+
D-sorbose + NADH + H+
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Substrates: 90% conversion
Products: -
?
L-glucitol + NAD+
D-sorbose + NADH + H+
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Substrates: 90% conversion
Products: -
?
additional information
?
-
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Substrates: production of 5-keto-D-gluconate is solely dependent on enzyme
Products: -
?
additional information
?
-
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Substrates: this SLDH is distinguished from other L-sorbose-producing enzymes by its high activity and substrate specificity. Isothermal titration calorimetry shows that the protein binds more strongly to D-sorbitol than other L-sorbose-producing enzymes, and substrate docking analysis confirms a higher turnover rate
Products: -
?
additional information
?
-
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Substrates: this SLDH is distinguished from other L-sorbose-producing enzymes by its high activity and substrate specificity. Isothermal titration calorimetry shows that the protein binds more strongly to D-sorbitol than other L-sorbose-producing enzymes, and substrate docking analysis confirms a higher turnover rate
Products: -
?
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malfunction
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mutation of His302 results in the denaturation of protein structure and loss of stability
metabolism
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membrane-bound D-sorbitol dehydrogenase is involved in the biotransformation of D-sorbitol to L-sorbose
evolution
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GoSLDH sequencing, structure analyses, and biochemical studies, suggest that it belongs to the NADP+-dependent polyol specific long-chain sorbitol dehydrogenase family. GoSLDH possesses the active site residues of Asp190, Val228, Lys294, and Asp299 and the conserved catalytic motif (KXXXXHXXH) for polyol-specific long-chain dehydrogenase
evolution
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GoSLDH sequencing, structure analyses, and biochemical studies, suggest that it belongs to the NADP+-dependent polyol specific long-chain sorbitol dehydrogenase family. GoSLDH possesses the active site residues of Asp190, Val228, Lys294, and Asp299 and the conserved catalytic motif (KXXXXHXXH) for polyol-specific long-chain dehydrogenase
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additional information
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sequence alignment-based homology modeling using the structure of NAD-bound sorbitol dehydrogenase, EC 1.1.1.14, with UniProt ID Q9KWR5 as template
additional information
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structure comparisons and molecular docking, overview
additional information
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structure comparisons and molecular docking, overview
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K294Q
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site-directed mutagenesis, inactive mutant
K294Q
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site-directed mutagenesis, inactive mutant
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additional information
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enzyme disruption mutant, oxidation activity against D-arabitol, D-sorbitol, D-mannitol, ribitol, meso-erythritol and glycerol are diminished
additional information
method evaluation and optimization for engineered L-sorbose production in Gluconobater oxydans by self-overexpressing the sldhAB gene in Gluconobacter oxydans strain WSH-003 with an optimal poly(A/T) tail under the constitutive promoter PtufB, the titer and the productivity of L-sorbose are enhanced by 36.3% and 25.0%, respectively, in a 1-L fermenter. Immobilization of Gluconobacter oxydans-sldhAB6 cells further improves the L-sorbose titer by 33.7% after 20 days of semi-continuous fed-batch fermentation. Immobilization of recombinant enzyme in calcium alginate beads, the L-sorbose titer is improved by 33.7% by the immobilization of sldhAB6 cells
additional information
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method evaluation and optimization for engineered L-sorbose production in Gluconobater oxydans by self-overexpressing the sldhAB gene in Gluconobacter oxydans strain WSH-003 with an optimal poly(A/T) tail under the constitutive promoter PtufB, the titer and the productivity of L-sorbose are enhanced by 36.3% and 25.0%, respectively, in a 1-L fermenter. Immobilization of Gluconobacter oxydans-sldhAB6 cells further improves the L-sorbose titer by 33.7% after 20 days of semi-continuous fed-batch fermentation. Immobilization of recombinant enzyme in calcium alginate beads, the L-sorbose titer is improved by 33.7% by the immobilization of sldhAB6 cells
additional information
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stability of GoSLDH significantly improves up to 13.6fold after cross-linking of immobilized enzyme on silica nanoparticles and retains 62.8% residual activity after 10 cycles of reuse. Covalent immobilization of GoSLDH onto SiO2 nanoparticles: the amino groups of amino acids such as lysine present on the surface of GoSLDH react with the glutaraldehyde activates SiO2 nanoparticles to form covalent bonds during immobilization at pH 7. The IY and IE of GoSLDH immobilized on different silica nanoparticles are in the ranges of 40.4-71.2% and 53.5-76.7%, respectively
additional information
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stability of GoSLDH significantly improves up to 13.6fold after cross-linking of immobilized enzyme on silica nanoparticles and retains 62.8% residual activity after 10 cycles of reuse. Covalent immobilization of GoSLDH onto SiO2 nanoparticles: the amino groups of amino acids such as lysine present on the surface of GoSLDH react with the glutaraldehyde activates SiO2 nanoparticles to form covalent bonds during immobilization at pH 7. The IY and IE of GoSLDH immobilized on different silica nanoparticles are in the ranges of 40.4-71.2% and 53.5-76.7%, respectively
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additional information
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method evaluation and optimization for engineered L-sorbose production in Gluconobater oxydans by self-overexpressing the sldhAB gene in Gluconobacter oxydans strain WSH-003 with an optimal poly(A/T) tail under the constitutive promoter PtufB, the titer and the productivity of L-sorbose are enhanced by 36.3% and 25.0%, respectively, in a 1-L fermenter. Immobilization of Gluconobacter oxydans-sldhAB6 cells further improves the L-sorbose titer by 33.7% after 20 days of semi-continuous fed-batch fermentation. Immobilization of recombinant enzyme in calcium alginate beads, the L-sorbose titer is improved by 33.7% by the immobilization of sldhAB6 cells
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