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2,5-diketo-D-gluconate + NADPH
5-keto-D-gluconate + NADP+
2-dehydro-D-gluconate + NADPH
D-gluconate + NADP+
2-keto-L-gluconic acid + NADH + H+
L-idonate + NAD+
2-keto-L-gluconic acid + NADPH + H+
L-idonate + NADP+
2-keto-L-gulonate + NADPH
L-idonate + NADP+
2-oxo-D-gluconate + NADH + H+
D-gluconate + NAD+
2-oxo-D-gluconate + NADPH + H+
D-gluconate + NADP+
2-oxo-L-gulonate + NADH + H+
L-idonate + NAD+
Substrates: -
Products: -
r
2-oxo-L-gulonate + NADPH + H+
L-idonate + NADP+
5-keto-D-gluconate + NADPH
D-gluconate + NADP+
acetaldehyde + NADPH + H+
ethanol + NADP+
-
Substrates: poor substrate
Products: -
?
D-galactonate + NADP+
2-dehydro-D-galactonate + NADPH
D-gluconate + NADP+
2-dehydro-D-gluconate + NADPH
D-gluconate + NADP+
2-dehydro-D-gluconate + NADPH + H+
D-xylonate + NADPH
2-keto-D-xylonate + NADP+
glyoxal + NADPH
?
-
Substrates: reduction at 33% the rate of 2-ketogluconate reduction
Products: -
?
glyoxylate + NADPH
glycolate + NADP+
-
Substrates: reduction at 350% the rate of 2-ketogluconate reduction
Products: -
?
hydroxypyruvate + NADPH
2,3-dihydroxypropanoate + NADP+
-
Substrates: reduction at 733% the rate of 2-keto-gluconate reduction
Products: -
?
L-idonate + NAD+
2-oxo-L-gulonate + NADH + H+
Substrates: -
Products: -
?
L-idonate + NADP+
2-keto-L-idonate + NADPH
L-idonate + NADP+
2-oxo-L-gulonate + NADPH + H+
pyruvate + NADPH + H+
lactate + NADP+
-
Substrates: reduction at 7% the rate of 2-ketogluconate reduction
Products: -
?
additional information
?
-
2,5-diketo-D-gluconate + NADPH

5-keto-D-gluconate + NADP+
Brevibacterium ketosoreductum
-
Substrates: -
Products: -
ir
2,5-diketo-D-gluconate + NADPH
5-keto-D-gluconate + NADP+
Brevibacterium ketosoreductum ATCC 21914
-
Substrates: -
Products: -
ir
2,5-diketo-D-gluconate + NADPH
5-keto-D-gluconate + NADP+
-
Substrates: -
Products: -
?
2-dehydro-D-gluconate + NADPH

D-gluconate + NADP+
acetic acid bacteria
-
Substrates: -
Products: -
?
2-dehydro-D-gluconate + NADPH
D-gluconate + NADP+
acetic acid bacteria
-
Substrates: 2-keto-D-gluconate, part of non-phosphorylative pathway of carbohydrates predominantly in acetic acid bacteria
Products: -
?
2-dehydro-D-gluconate + NADPH
D-gluconate + NADP+
-
Substrates: i.e. 2-keto-D-gluconate, best substrate for Acetobacter ascendens and Gluconobacter
Products: -
r
2-dehydro-D-gluconate + NADPH
D-gluconate + NADP+
-
Substrates: strongly preferred reaction of Acetobacter enzyme
Products: -
r
2-dehydro-D-gluconate + NADPH
D-gluconate + NADP+
-
Substrates: equal reaction rate of reduction of 2-ketogluconate and oxidation of gluconate with Gluconobacter enzyme
Products: -
r
2-dehydro-D-gluconate + NADPH
D-gluconate + NADP+
-
Substrates: -
Products: -
r
2-dehydro-D-gluconate + NADPH
D-gluconate + NADP+
-
Substrates: strongly preferred reaction of Acetobacter enzyme
Products: -
r
2-dehydro-D-gluconate + NADPH
D-gluconate + NADP+
-
Substrates: -
Products: -
r
2-dehydro-D-gluconate + NADPH
D-gluconate + NADP+
Brevibacterium ketosoreductum
-
Substrates: 11.8% of activity with 2,5-diketo-D-gluconate
Products: -
?
2-dehydro-D-gluconate + NADPH
D-gluconate + NADP+
Brevibacterium ketosoreductum
-
Substrates: -
Products: -
?
2-dehydro-D-gluconate + NADPH
D-gluconate + NADP+
Brevibacterium ketosoreductum ATCC 21914
-
Substrates: 11.8% of activity with 2,5-diketo-D-gluconate
Products: -
?
2-dehydro-D-gluconate + NADPH
D-gluconate + NADP+
Brevibacterium ketosoreductum ATCC 21914
-
Substrates: -
Products: -
?
2-dehydro-D-gluconate + NADPH
D-gluconate + NADP+
-
Substrates: -
Products: -
?
2-dehydro-D-gluconate + NADPH
D-gluconate + NADP+
-
Substrates: i.e. 2-keto-D-gluconate, best substrate for Acetobacter ascendens and Gluconobacter
Products: -
r
2-dehydro-D-gluconate + NADPH
D-gluconate + NADP+
-
Substrates: reverse reaction at the same rate by Gluconobacter enzyme
Products: -
r
2-dehydro-D-gluconate + NADPH
D-gluconate + NADP+
-
Substrates: i.e. 2-keto-D-gluconate, best substrate for Acetobacter ascendens and Gluconobacter
Products: -
r
2-dehydro-D-gluconate + NADPH
D-gluconate + NADP+
-
Substrates: reverse reaction at the same rate by Gluconobacter enzyme
Products: -
r
2-dehydro-D-gluconate + NADPH
D-gluconate + NADP+
-
Substrates: -
Products: -
?
2-dehydro-D-gluconate + NADPH
D-gluconate + NADP+
-
Substrates: -
Products: -
?
2-keto-L-gluconic acid + NADH + H+

L-idonate + NAD+
-
Substrates: -
Products: -
?
2-keto-L-gluconic acid + NADH + H+
L-idonate + NAD+
-
Substrates: -
Products: -
?
2-keto-L-gluconic acid + NADPH + H+

L-idonate + NADP+
-
Substrates: -
Products: -
?
2-keto-L-gluconic acid + NADPH + H+
L-idonate + NADP+
-
Substrates: -
Products: -
?
2-keto-L-gulonate + NADPH

L-idonate + NADP+
-
Substrates: -
Products: -
r
2-keto-L-gulonate + NADPH
L-idonate + NADP+
-
Substrates: third best substrate
Products: -
r
2-keto-L-gulonate + NADPH
L-idonate + NADP+
-
Substrates: -
Products: -
r
2-keto-L-gulonate + NADPH
L-idonate + NADP+
-
Substrates: betst substrate
Products: -
r
2-keto-L-gulonate + NADPH
L-idonate + NADP+
Brevibacterium ketosoreductum
-
Substrates: 10.8% of activity with 2,5-diketo-D-gluconate
Products: -
?
2-keto-L-gulonate + NADPH
L-idonate + NADP+
Brevibacterium ketosoreductum ATCC 21914
-
Substrates: 10.8% of activity with 2,5-diketo-D-gluconate
Products: -
?
2-keto-L-gulonate + NADPH
L-idonate + NADP+
-
Substrates: -
Products: -
?
2-keto-L-gulonate + NADPH
L-idonate + NADP+
-
Substrates: third best substrate
Products: -
r
2-keto-L-gulonate + NADPH
L-idonate + NADP+
-
Substrates: third best substrate
Products: -
r
2-oxo-D-gluconate + NADH + H+

D-gluconate + NAD+
Substrates: enzyme shows dual cofactor specificity, being able to use both NADPH and NADH
Products: -
?
2-oxo-D-gluconate + NADH + H+
D-gluconate + NAD+
Substrates: enzyme shows dual cofactor specificity, being able to use both NADPH and NADH
Products: -
?
2-oxo-D-gluconate + NADPH + H+

D-gluconate + NADP+
Substrates: -
Products: -
?
2-oxo-D-gluconate + NADPH + H+
D-gluconate + NADP+
Substrates: enzyme shows dual cofactor specificity, being able to use both NADPH and NADH
Products: -
?
2-oxo-D-gluconate + NADPH + H+
D-gluconate + NADP+
Substrates: -
Products: -
?
2-oxo-D-gluconate + NADPH + H+
D-gluconate + NADP+
Substrates: enzyme shows dual cofactor specificity, being able to use both NADPH and NADH
Products: -
?
2-oxo-L-gulonate + NADPH + H+

L-idonate + NADP+
Substrates: -
Products: -
r
2-oxo-L-gulonate + NADPH + H+
L-idonate + NADP+
Substrates: -
Products: -
r
2-oxo-L-gulonate + NADPH + H+
L-idonate + NADP+
Substrates: -
Products: -
r
2-oxo-L-gulonate + NADPH + H+
L-idonate + NADP+
Substrates: -
Products: -
?
2-oxo-L-gulonate + NADPH + H+
L-idonate + NADP+
Substrates: -
Products: -
?
5-keto-D-gluconate + NADPH

D-gluconate + NADP+
-
Substrates: poor substrate
Products: -
?
5-keto-D-gluconate + NADPH
D-gluconate + NADP+
-
Substrates: poor substrate
Products: -
?
5-keto-D-gluconate + NADPH
D-gluconate + NADP+
-
Substrates: -
Products: -
?
5-keto-D-gluconate + NADPH
D-gluconate + NADP+
-
Substrates: -
Products: -
?
D-galactonate + NADP+

2-dehydro-D-galactonate + NADPH
-
Substrates: -
Products: -
r
D-galactonate + NADP+
2-dehydro-D-galactonate + NADPH
-
Substrates: -
Products: -
r
D-galactonate + NADP+
2-dehydro-D-galactonate + NADPH
-
Substrates: third best substrate
Products: -
r
D-galactonate + NADP+
2-dehydro-D-galactonate + NADPH
-
Substrates: third best substrate
Products: -
r
D-gluconate + NADP+

2-dehydro-D-gluconate + NADPH
Substrates: -
Products: -
?
D-gluconate + NADP+
2-dehydro-D-gluconate + NADPH
Substrates: the large subunit is the catalytically active enzyme part, high substrate and regiospecificity
Products: -
?
D-gluconate + NADP+
2-dehydro-D-gluconate + NADPH
Substrates: -
Products: -
?
D-gluconate + NADP+
2-dehydro-D-gluconate + NADPH
Substrates: the large subunit is the catalytically active enzyme part, high substrate and regiospecificity
Products: -
?
D-gluconate + NADP+
2-dehydro-D-gluconate + NADPH
Substrates: -
Products: -
?
D-gluconate + NADP+
2-dehydro-D-gluconate + NADPH
Substrates: -
Products: -
?
D-gluconate + NADP+

2-dehydro-D-gluconate + NADPH + H+
-
Substrates: wild-type exhibits gluconate-dependent respiration. Genes cj0414 and cj0415, orthologous to GADH, are co-transcribed. Campylobacter jejuni 81176 does not use gluconate compounds as sole carbon sources. GADH plays a minor role in mouse colonization
Products: -
?
D-gluconate + NADP+
2-dehydro-D-gluconate + NADPH + H+
-
Substrates: wild-type exhibits gluconate-dependent respiration. Genes cj0414 and cj0415, orthologous to GADH, are co-transcribed. Campylobacter jejuni 81176 does not use gluconate compounds as sole carbon sources. GADH plays a minor role in mouse colonization
Products: -
?
D-gluconate + NADP+
2-dehydro-D-gluconate + NADPH + H+
-
Substrates: -
Products: -
?
D-gluconate + NADP+
2-dehydro-D-gluconate + NADPH + H+
-
Substrates: -
Products: -
?
D-gluconate + NADP+
2-dehydro-D-gluconate + NADPH + H+
Substrates: -
Products: -
?
D-gluconate + NADP+
2-dehydro-D-gluconate + NADPH + H+
Substrates: -
Products: -
?
D-gluconate + NADP+
2-dehydro-D-gluconate + NADPH + H+
Substrates: the ability of CHA0 to acidify its environment is largely determined by its ability to produce gluconic acid from glucose
Products: -
?
D-gluconate + NADP+
2-dehydro-D-gluconate + NADPH + H+
Substrates: the ability of CHA0 to acidify its environment is largely determined by its ability to produce gluconic acid from glucose
Products: -
?
D-gluconate + NADP+
2-dehydro-D-gluconate + NADPH + H+
A0A2H4PJM1; A0A2H4PJM2; A0A2H4PJM7
Substrates: -
Products: -
?
D-gluconate + NADP+
2-dehydro-D-gluconate + NADPH + H+
A0A2H4PJM1; A0A2H4PJM2; A0A2H4PJM7
Substrates: -
Products: -
?
D-xylonate + NADPH

2-keto-D-xylonate + NADP+
-
Substrates: -
Products: -
?
D-xylonate + NADPH
2-keto-D-xylonate + NADP+
-
Substrates: -
Products: -
?
D-xylonate + NADPH
2-keto-D-xylonate + NADP+
-
Substrates: -
Products: -
?
L-idonate + NADP+

2-keto-L-idonate + NADPH
-
Substrates: -
Products: -
?
L-idonate + NADP+
2-keto-L-idonate + NADPH
-
Substrates: poor substrate
Products: -
?
L-idonate + NADP+
2-keto-L-idonate + NADPH
-
Substrates: -
Products: -
?
L-idonate + NADP+
2-keto-L-idonate + NADPH
-
Substrates: poor substrate
Products: -
?
L-idonate + NADP+
2-keto-L-idonate + NADPH
-
Substrates: best substrate
Products: -
?
L-idonate + NADP+
2-keto-L-idonate + NADPH
-
Substrates: best substrate
Products: -
?
L-idonate + NADP+

2-oxo-L-gulonate + NADPH + H+
Substrates: -
Products: -
r
L-idonate + NADP+
2-oxo-L-gulonate + NADPH + H+
Substrates: -
Products: -
r
L-idonate + NADP+
2-oxo-L-gulonate + NADPH + H+
Substrates: -
Products: -
r
additional information

?
-
-
Substrates: no substrates are: 6-phospho-D-gluconate, D-mannonate, D-arabonate
Products: -
?
additional information
?
-
-
Substrates: D-xylonate, D-glucose, D-fructose, L-sorbose, 5-keto-D-fructose, D-sorbitol, glycerol
Products: -
?
additional information
?
-
-
Substrates: no substrates are: 6-phospho-D-gluconate, D-mannonate, D-arabonate
Products: -
?
additional information
?
-
-
Substrates: no substrates are: 6-phospho-D-gluconate, D-mannonate, D-arabonate
Products: -
?
additional information
?
-
-
Substrates: no substrates are: 6-phospho-D-gluconate, D-mannonate, D-arabonate
Products: -
?
additional information
?
-
Substrates: for large-scale production of 2-dehydro-D-gluconate, the cells require for formation of 2-dehydro-D-gluconate from D-gluconate oxygen as the final acceptor of electrons formed during the oxidation ofD -gluconate
Products: -
?
additional information
?
-
-
Substrates: for large-scale production of 2-dehydro-D-gluconate, the cells require for formation of 2-dehydro-D-gluconate from D-gluconate oxygen as the final acceptor of electrons formed during the oxidation ofD -gluconate
Products: -
?
additional information
?
-
Substrates: for large-scale production of 2-dehydro-D-gluconate, the cells require for formation of 2-dehydro-D-gluconate from D-gluconate oxygen as the final acceptor of electrons formed during the oxidation ofD -gluconate
Products: -
?
additional information
?
-
A0A2H4PJM1; A0A2H4PJM2; A0A2H4PJM7
Substrates: no activity on other sugars and sugar acids
Products: -
?
additional information
?
-
-
Substrates: no activity on other sugars and sugar acids
Products: -
?
additional information
?
-
A0A2H4PJM1; A0A2H4PJM2; A0A2H4PJM7
Substrates: no activity on other sugars and sugar acids
Products: -
?
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2,5-diketo-D-gluconate + NADPH
5-keto-D-gluconate + NADP+
2-dehydro-D-gluconate + NADPH
D-gluconate + NADP+
2-keto-L-gluconic acid + NADPH + H+
L-idonate + NADP+
2-oxo-D-gluconate + NADPH + H+
D-gluconate + NADP+
2-oxo-L-gulonate + NADPH + H+
L-idonate + NADP+
D-gluconate + NADP+
2-dehydro-D-gluconate + NADPH
D-gluconate + NADP+
2-dehydro-D-gluconate + NADPH + H+
additional information
?
-
2,5-diketo-D-gluconate + NADPH

5-keto-D-gluconate + NADP+
Brevibacterium ketosoreductum
-
Substrates: -
Products: -
ir
2,5-diketo-D-gluconate + NADPH
5-keto-D-gluconate + NADP+
Brevibacterium ketosoreductum ATCC 21914
-
Substrates: -
Products: -
ir
2,5-diketo-D-gluconate + NADPH
5-keto-D-gluconate + NADP+
-
Substrates: -
Products: -
?
2-dehydro-D-gluconate + NADPH

D-gluconate + NADP+
acetic acid bacteria
-
Substrates: 2-keto-D-gluconate, part of non-phosphorylative pathway of carbohydrates predominantly in acetic acid bacteria
Products: -
?
2-dehydro-D-gluconate + NADPH
D-gluconate + NADP+
-
Substrates: -
Products: -
r
2-dehydro-D-gluconate + NADPH
D-gluconate + NADP+
Brevibacterium ketosoreductum
-
Substrates: -
Products: -
?
2-dehydro-D-gluconate + NADPH
D-gluconate + NADP+
Brevibacterium ketosoreductum ATCC 21914
-
Substrates: -
Products: -
?
2-dehydro-D-gluconate + NADPH
D-gluconate + NADP+
-
Substrates: -
Products: -
?
2-dehydro-D-gluconate + NADPH
D-gluconate + NADP+
-
Substrates: reverse reaction at the same rate by Gluconobacter enzyme
Products: -
r
2-dehydro-D-gluconate + NADPH
D-gluconate + NADP+
-
Substrates: reverse reaction at the same rate by Gluconobacter enzyme
Products: -
r
2-keto-L-gluconic acid + NADPH + H+

L-idonate + NADP+
-
Substrates: -
Products: -
?
2-keto-L-gluconic acid + NADPH + H+
L-idonate + NADP+
-
Substrates: -
Products: -
?
2-oxo-D-gluconate + NADPH + H+

D-gluconate + NADP+
Substrates: -
Products: -
?
2-oxo-D-gluconate + NADPH + H+
D-gluconate + NADP+
Substrates: -
Products: -
?
2-oxo-L-gulonate + NADPH + H+

L-idonate + NADP+
Substrates: -
Products: -
?
2-oxo-L-gulonate + NADPH + H+
L-idonate + NADP+
Substrates: -
Products: -
?
D-gluconate + NADP+

2-dehydro-D-gluconate + NADPH
Substrates: -
Products: -
?
D-gluconate + NADP+
2-dehydro-D-gluconate + NADPH
Substrates: -
Products: -
?
D-gluconate + NADP+
2-dehydro-D-gluconate + NADPH
Substrates: -
Products: -
?
D-gluconate + NADP+
2-dehydro-D-gluconate + NADPH
Substrates: -
Products: -
?
D-gluconate + NADP+

2-dehydro-D-gluconate + NADPH + H+
-
Substrates: -
Products: -
?
D-gluconate + NADP+
2-dehydro-D-gluconate + NADPH + H+
-
Substrates: -
Products: -
?
D-gluconate + NADP+
2-dehydro-D-gluconate + NADPH + H+
Substrates: -
Products: -
?
D-gluconate + NADP+
2-dehydro-D-gluconate + NADPH + H+
Substrates: -
Products: -
?
additional information

?
-
Substrates: for large-scale production of 2-dehydro-D-gluconate, the cells require for formation of 2-dehydro-D-gluconate from D-gluconate oxygen as the final acceptor of electrons formed during the oxidation ofD -gluconate
Products: -
?
additional information
?
-
-
Substrates: for large-scale production of 2-dehydro-D-gluconate, the cells require for formation of 2-dehydro-D-gluconate from D-gluconate oxygen as the final acceptor of electrons formed during the oxidation ofD -gluconate
Products: -
?
additional information
?
-
Substrates: for large-scale production of 2-dehydro-D-gluconate, the cells require for formation of 2-dehydro-D-gluconate from D-gluconate oxygen as the final acceptor of electrons formed during the oxidation ofD -gluconate
Products: -
?
Please wait a moment until the data is sorted. This message will disappear when the data is sorted.
Please wait a moment until the data is sorted. This message will disappear when the data is sorted.
Please wait a moment until the data is sorted. This message will disappear when the data is sorted.
Please wait a moment until the data is sorted. This message will disappear when the data is sorted.
Please wait a moment until the data is sorted. This message will disappear when the data is sorted.
Please wait a moment until the data is sorted. This message will disappear when the data is sorted.
Please wait a moment until the data is sorted. This message will disappear when the data is sorted.
Please wait a moment until the data is sorted. This message will disappear when the data is sorted.
Please wait a moment until the data is sorted. This message will disappear when the data is sorted.
Please wait a moment until the data is sorted. This message will disappear when the data is sorted.
Please wait a moment until the data is sorted. This message will disappear when the data is sorted.
Please wait a moment until the data is sorted. This message will disappear when the data is sorted.
Please wait a moment until the data is sorted. This message will disappear when the data is sorted.
Please wait a moment until the data is sorted. This message will disappear when the data is sorted.
Please wait a moment until the data is sorted. This message will disappear when the data is sorted.
Please wait a moment until the data is sorted. This message will disappear when the data is sorted.
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malfunction

gluD deletion results in accumulation of 2-keto-L-gulonate in the liquid cultivation, while the gluE deletion results in reduced growth and cessation of the D-glucuronic acid catabolism
malfunction
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gluD deletion results in accumulation of 2-keto-L-gulonate in the liquid cultivation, while the gluE deletion results in reduced growth and cessation of the D-glucuronic acid catabolism
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malfunction
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gluD deletion results in accumulation of 2-keto-L-gulonate in the liquid cultivation, while the gluE deletion results in reduced growth and cessation of the D-glucuronic acid catabolism
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metabolism

in the filamentous fungus Aspergillus niger, the enzymes that are known to be part of the D-glucuronic acid catabolism pathway are the NADPH requiring D-glucuronic acid reductase forming L-gulonate and the NADH requiring 2-keto-L-gulonate reductase that forms L-idonate. With the aid of RNA sequencing two more enzymes of the pathway are identified. The first is a NADPH requiring 2-keto-L-gulonate reductase that forms L-idonate, GluD. The second is a NAD+ requiring L-idonate 5-dehydrogenase forming 5-keto-gluconate, GluE (EC 1.1.1.366). The genes coding for these two enzymes are clustered and share the same bidirectional promoter
metabolism
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in the filamentous fungus Aspergillus niger, the enzymes that are known to be part of the D-glucuronic acid catabolism pathway are the NADPH requiring D-glucuronic acid reductase forming L-gulonate and the NADH requiring 2-keto-L-gulonate reductase that forms L-idonate. With the aid of RNA sequencing two more enzymes of the pathway are identified. The first is a NADPH requiring 2-keto-L-gulonate reductase that forms L-idonate, GluD. The second is a NAD+ requiring L-idonate 5-dehydrogenase forming 5-keto-gluconate, GluE (EC 1.1.1.366). The genes coding for these two enzymes are clustered and share the same bidirectional promoter
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metabolism
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in the filamentous fungus Aspergillus niger, the enzymes that are known to be part of the D-glucuronic acid catabolism pathway are the NADPH requiring D-glucuronic acid reductase forming L-gulonate and the NADH requiring 2-keto-L-gulonate reductase that forms L-idonate. With the aid of RNA sequencing two more enzymes of the pathway are identified. The first is a NADPH requiring 2-keto-L-gulonate reductase that forms L-idonate, GluD. The second is a NAD+ requiring L-idonate 5-dehydrogenase forming 5-keto-gluconate, GluE (EC 1.1.1.366). The genes coding for these two enzymes are clustered and share the same bidirectional promoter
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physiological function

deletion of the gluC gene results in a phenotype of no growth on D-glucuronate
physiological function
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Gluconobacter oxydans NBRC3293 produces 2,5-dioxo-D-gluconate from D-glucose via D-gluconate and 2-keto-D-gluconate, with accumulation of the product in the culture medium, the efficiency of 2,5-diketo-D-gluconate production is unsatisfactory because there is a large amount of residual D-gluconate at the end of the biotransformation process. Heterologous overexpression of the kgdSLC genes in a mutant strain of Gluconobacter japonicus NBRC3271 engineered to produce 2-dehydro-D-gluconate efficiently from a mixture of D-glucose and D-gluconate, results in a mutant strain that consumes almost all of the starting materials (D-glucose and D-gluconate) to produce 2,5-dioxo-D-gluconate quantitatively as a seemingly unique metabolite
physiological function
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the enzyme catalyzes the bioconversion of 2-dehydro-L-gulonic acid to L-idonate, which plays a negative role in the manufacture of vitamin C. The primary biochemical function of HDH from Ketogulonicigenium vulgare is C=O bond oxidation-reduction, cf. EC 1.1.1.272
physiological function
a GluD deletion mutant does not show reduced growth when cultivated on agar plate with D-glucuronate as sole carbon source. In the liquid cultivation on D-glucuronate, 2-oxo-L-gulonate accumulates in the medium after D-glucuronate is consumed
physiological function
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a GluD deletion mutant does not show reduced growth when cultivated on agar plate with D-glucuronate as sole carbon source. In the liquid cultivation on D-glucuronate, 2-oxo-L-gulonate accumulates in the medium after D-glucuronate is consumed
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physiological function
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the enzyme catalyzes the bioconversion of 2-dehydro-L-gulonic acid to L-idonate, which plays a negative role in the manufacture of vitamin C. The primary biochemical function of HDH from Ketogulonicigenium vulgare is C=O bond oxidation-reduction, cf. EC 1.1.1.272
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physiological function
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Gluconobacter oxydans NBRC3293 produces 2,5-dioxo-D-gluconate from D-glucose via D-gluconate and 2-keto-D-gluconate, with accumulation of the product in the culture medium, the efficiency of 2,5-diketo-D-gluconate production is unsatisfactory because there is a large amount of residual D-gluconate at the end of the biotransformation process. Heterologous overexpression of the kgdSLC genes in a mutant strain of Gluconobacter japonicus NBRC3271 engineered to produce 2-dehydro-D-gluconate efficiently from a mixture of D-glucose and D-gluconate, results in a mutant strain that consumes almost all of the starting materials (D-glucose and D-gluconate) to produce 2,5-dioxo-D-gluconate quantitatively as a seemingly unique metabolite
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physiological function
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a GluD deletion mutant does not show reduced growth when cultivated on agar plate with D-glucuronate as sole carbon source. In the liquid cultivation on D-glucuronate, 2-oxo-L-gulonate accumulates in the medium after D-glucuronate is consumed
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additional information

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the amino acid residues Arg234, Glu263 and His 279 form the active site of enzyme HDH. Residues Arg234, Ala210, Thr211, and Arg212, which are located on top of the catalytic triad, act as a size filter to jointly determine the substrate specificity
additional information
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the amino acid residues Arg234, Glu263 and His 279 form the active site of enzyme HDH. Residues Arg234, Ala210, Thr211, and Arg212, which are located on top of the catalytic triad, act as a size filter to jointly determine the substrate specificity
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additional information

identification of a gene cluster encoding NADPH-dependent, L-idonate forming, 2-keto-L-gulonate reductase and NAD+-dependent L-idonate 5-dehydrogenase which forms 5-keto-D-gluconate. These genes are involved in the fungal D-glcUA catabolism and the reaction catalyzed by the latter enzyme is a direct continuation for the previously identified reaction by the action of GluC. Generation of a gene gluD deletion mutant strain, phenotype, overview. Deletion of gluD does not result in reduced or no growth on D-glcUA as sole carbon source, but it results in a phenotype of accumulating 2-keto-L-gulonate when cultivating on D-glcUA
additional information
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identification of a gene cluster encoding NADPH-dependent, L-idonate forming, 2-keto-L-gulonate reductase and NAD+-dependent L-idonate 5-dehydrogenase which forms 5-keto-D-gluconate. These genes are involved in the fungal D-glcUA catabolism and the reaction catalyzed by the latter enzyme is a direct continuation for the previously identified reaction by the action of GluC. Generation of a gene gluD deletion mutant strain, phenotype, overview. Deletion of gluD does not result in reduced or no growth on D-glcUA as sole carbon source, but it results in a phenotype of accumulating 2-keto-L-gulonate when cultivating on D-glcUA
additional information
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identification of a gene cluster encoding NADPH-dependent, L-idonate forming, 2-keto-L-gulonate reductase and NAD+-dependent L-idonate 5-dehydrogenase which forms 5-keto-D-gluconate. These genes are involved in the fungal D-glcUA catabolism and the reaction catalyzed by the latter enzyme is a direct continuation for the previously identified reaction by the action of GluC. Generation of a gene gluD deletion mutant strain, phenotype, overview. Deletion of gluD does not result in reduced or no growth on D-glcUA as sole carbon source, but it results in a phenotype of accumulating 2-keto-L-gulonate when cultivating on D-glcUA
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additional information
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identification of a gene cluster encoding NADPH-dependent, L-idonate forming, 2-keto-L-gulonate reductase and NAD+-dependent L-idonate 5-dehydrogenase which forms 5-keto-D-gluconate. These genes are involved in the fungal D-glcUA catabolism and the reaction catalyzed by the latter enzyme is a direct continuation for the previously identified reaction by the action of GluC. Generation of a gene gluD deletion mutant strain, phenotype, overview. Deletion of gluD does not result in reduced or no growth on D-glcUA as sole carbon source, but it results in a phenotype of accumulating 2-keto-L-gulonate when cultivating on D-glcUA
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additional information
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cj0414 and cj0415 mutants lack GADH activity at either temperature. Cj0415 mutant does not exhibit gluconate-dependent respiration. Cj0415 mutant is defective in chicken colonization, but exhibits only a minor colonization defect in mice
additional information
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cj0414 and cj0415 mutants lack GADH activity at either temperature. Cj0415 mutant does not exhibit gluconate-dependent respiration. Cj0415 mutant is defective in chicken colonization, but exhibits only a minor colonization defect in mice
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additional information
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a mutant strain of Gluconobacter japonicus NBRC3271 is engineered to produce 2-dehydro-D-gluconate efficiently from a mixture of D-glucose and D-gluconate
additional information
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a mutant strain of Gluconobacter japonicus NBRC3271 is engineered to produce 2-dehydro-D-gluconate efficiently from a mixture of D-glucose and D-gluconate
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additional information
development of an efficient bacterial strain of Gluconobacter oxydans_tufB_ga2dh for the production of 2-dehydro-D-gluconate by overexpressing the ga2dh gene in Gluconobacter oxydans. Supply of sufficient oxygen enhances the positive effect of gene overexpression on 2-dehydro-D-gluconate production. Gluconobacter oxydans_tufB_ga2dh is a competitive species for use in 2-dehydro-D-gluconate production. Transgenic strains, evaluation and optimization, detailed overview
additional information
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development of an efficient bacterial strain of Gluconobacter oxydans_tufB_ga2dh for the production of 2-dehydro-D-gluconate by overexpressing the ga2dh gene in Gluconobacter oxydans. Supply of sufficient oxygen enhances the positive effect of gene overexpression on 2-dehydro-D-gluconate production. Gluconobacter oxydans_tufB_ga2dh is a competitive species for use in 2-dehydro-D-gluconate production. Transgenic strains, evaluation and optimization, detailed overview
additional information
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development of an efficient bacterial strain of Gluconobacter oxydans_tufB_ga2dh for the production of 2-dehydro-D-gluconate by overexpressing the ga2dh gene in Gluconobacter oxydans. Supply of sufficient oxygen enhances the positive effect of gene overexpression on 2-dehydro-D-gluconate production. Gluconobacter oxydans_tufB_ga2dh is a competitive species for use in 2-dehydro-D-gluconate production. Transgenic strains, evaluation and optimization, detailed overview
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additional information
DELTAgad, and DELTAgcd/DELTAgad mutants are indistinguishable from the wild-type with respect to their growth characteristics and morphologies in liquid or solid nutrient-rich media. In the DELTAgcd mutant, which does not produce gluconic acid, the enhanced production of antifungal compounds is associated with improved biocontrol activity against take-all disease of wheat, caused by Gaeumannomyces graminis var. tritici
additional information
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DELTAgad, and DELTAgcd/DELTAgad mutants are indistinguishable from the wild-type with respect to their growth characteristics and morphologies in liquid or solid nutrient-rich media. In the DELTAgcd mutant, which does not produce gluconic acid, the enhanced production of antifungal compounds is associated with improved biocontrol activity against take-all disease of wheat, caused by Gaeumannomyces graminis var. tritici
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