Literature summary for 4.2.1.115 extracted from

Schoenhofen, I.C.; McNally, D.J.; Vinogradov, E.; Whitfield, D.; Young, N.M.; Dick, S.; Wakarchuk, W.W.; Brisson, J.R.; Logan, S.M.
Functional characterization of dehydratase/aminotransferase pairs from Helicobacter and Campylobacter: enzymes distinguishing the pseudaminic acid and bacillosamine biosynthetic pathways (2006), J. Biol. Chem., 281, 723-732.

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Natural Substrates/ Products (Substrates)

Natural Substrates	Organism	Comment (Nat. Sub.)	Natural Products	Comment (Nat. Pro.)	Rev.	Reac.
2 UDP-N-acetylglucosamine	Campylobacter jejuni	the Cj1293 enzyme exhibits C6 dehydratase as well as C5 epimerase activity resulting in the production of both UDP-2-acetamido-2,6-dideoxy-beta-L-arabino-4-hexulose and UDP-2-acetamido-2,6-dideoxy-alpha-D-xylo-4-hexulose. The enzyme is involved in biosynthesis of pseudaminic acid for glycomodification of the bacterial falgellins, overview	UDP-2-acetamido-2,6-dideoxy-beta-L-arabino-4-hexulose + UDP-2-acetamido-2,6-dideoxy-alpha-D-xylo-4-hexulose + 2 H2O	-	?
2 UDP-N-acetylglucosamine	Helicobacter pylori	the HP0840 enzyme exhibits C6 dehydratase as well as C5 epimerase activity resulting in the production of both UDP-2-acetamido-2,6-dideoxy-beta-L-arabino-4-hexulose and UDP-2-acetamido-2,6-dideoxy-alpha-D-xylo-4-hexulose. The enzyme is involved in biosynthesis of pseudaminic acid for glycomodification of the bacterial falgellins, overview	UDP-2-acetamido-2,6-dideoxy-beta-L-arabino-4-hexulose + UDP-2-acetamido-2,6-dideoxy-alpha-D-xylo-4-hexulose + 2 H2O	-	?
2 UDP-N-acetylglucosamine	Campylobacter jejuni 11168	the Cj1293 enzyme exhibits C6 dehydratase as well as C5 epimerase activity resulting in the production of both UDP-2-acetamido-2,6-dideoxy-beta-L-arabino-4-hexulose and UDP-2-acetamido-2,6-dideoxy-alpha-D-xylo-4-hexulose. The enzyme is involved in biosynthesis of pseudaminic acid for glycomodification of the bacterial falgellins, overview	UDP-2-acetamido-2,6-dideoxy-beta-L-arabino-4-hexulose + UDP-2-acetamido-2,6-dideoxy-alpha-D-xylo-4-hexulose + 2 H2O	-	?
additional information	Campylobacter jejuni	the flagellar aminotransferases Cj1294 utilize only UDP-2-acetamido-2,6-dideoxy-beta-L-arabino-4-hexulose as substrate producing UDP-4-amino-4,6-dideoxy-beta-L-AltNAc, a precursor in the Pse biosynthetic pathway	?	-	?
additional information	Helicobacter pylori	the flagellar aminotransferases HP0366 utilize only UDP-2-acetamido-2,6-dideoxy-beta-L-arabino-4-hexulose as substrate producing UDP-4-amino-4,6-dideoxy-beta-L-AltNAc, a precursor in the Pse biosynthetic pathway	?	-	?
additional information	Campylobacter jejuni 11168	the flagellar aminotransferases Cj1294 utilize only UDP-2-acetamido-2,6-dideoxy-beta-L-arabino-4-hexulose as substrate producing UDP-4-amino-4,6-dideoxy-beta-L-AltNAc, a precursor in the Pse biosynthetic pathway	?	-	?

Organism

Organism	UniProt	Comment	Textmining
Campylobacter jejuni	-	-	-
Campylobacter jejuni 11168	-	-	-
Helicobacter pylori	-	-	-

Substrates and Products (Substrate)

Substrates	Comment Substrates	Organism	Products	Comment (Products)	Rev.	Reac.
2 UDP-N-acetylglucosamine	the Cj1293 enzyme exhibits C6 dehydratase as well as C5 epimerase activity resulting in the production of both UDP-2-acetamido-2,6-dideoxy-beta-L-arabino-4-hexulose and UDP-2-acetamido-2,6-dideoxy-alpha-D-xylo-4-hexulose. The enzyme is involved in biosynthesis of pseudaminic acid for glycomodification of the bacterial falgellins, overview	Campylobacter jejuni	UDP-2-acetamido-2,6-dideoxy-beta-L-arabino-4-hexulose + UDP-2-acetamido-2,6-dideoxy-alpha-D-xylo-4-hexulose + 2 H2O	-	?
2 UDP-N-acetylglucosamine	the Cj1293 enzyme exhibits C6 dehydratase as well as C5 epimerase activity resulting in the production of both UDP-2-acetamido-2,6-dideoxy-beta-L-arabino-4-hexulose and UDP-2-acetamido-2,6-dideoxy-alpha-D-xylo-4-hexulose. The enzyme is involved in biosynthesis of pseudaminic acid for glycomodification of the bacterial falgellins, overview	Campylobacter jejuni	UDP-2-acetamido-2,6-dideoxy-beta-L-arabino-4-hexulose + UDP-2-acetamido-2,6-dideoxy-alpha-D-xylo-4-hexulose + 2 H2O	NMR analysis of reaction products, overview	?
2 UDP-N-acetylglucosamine	the HP0840 enzyme exhibits C6 dehydratase as well as C5 epimerase activity resulting in the production of both UDP-2-acetamido-2,6-dideoxy-beta-L-arabino-4-hexulose and UDP-2-acetamido-2,6-dideoxy-alpha-D-xylo-4-hexulose. The enzyme is involved in biosynthesis of pseudaminic acid for glycomodification of the bacterial falgellins, overview	Helicobacter pylori	UDP-2-acetamido-2,6-dideoxy-beta-L-arabino-4-hexulose + UDP-2-acetamido-2,6-dideoxy-alpha-D-xylo-4-hexulose + 2 H2O	-	?
2 UDP-N-acetylglucosamine	the HP0840 enzyme exhibits C6 dehydratase as well as C5 epimerase activity resulting in the production of both UDP-2-acetamido-2,6-dideoxy-beta-L-arabino-4-hexulose and UDP-2-acetamido-2,6-dideoxy-alpha-D-xylo-4-hexulose. The enzyme is involved in biosynthesis of pseudaminic acid for glycomodification of the bacterial falgellins, overview	Helicobacter pylori	UDP-2-acetamido-2,6-dideoxy-beta-L-arabino-4-hexulose + UDP-2-acetamido-2,6-dideoxy-alpha-D-xylo-4-hexulose + 2 H2O	NMR analysis of reaction products, overview	?
2 UDP-N-acetylglucosamine	the Cj1293 enzyme exhibits C6 dehydratase as well as C5 epimerase activity resulting in the production of both UDP-2-acetamido-2,6-dideoxy-beta-L-arabino-4-hexulose and UDP-2-acetamido-2,6-dideoxy-alpha-D-xylo-4-hexulose. The enzyme is involved in biosynthesis of pseudaminic acid for glycomodification of the bacterial falgellins, overview	Campylobacter jejuni 11168	UDP-2-acetamido-2,6-dideoxy-beta-L-arabino-4-hexulose + UDP-2-acetamido-2,6-dideoxy-alpha-D-xylo-4-hexulose + 2 H2O	-	?
2 UDP-N-acetylglucosamine	the Cj1293 enzyme exhibits C6 dehydratase as well as C5 epimerase activity resulting in the production of both UDP-2-acetamido-2,6-dideoxy-beta-L-arabino-4-hexulose and UDP-2-acetamido-2,6-dideoxy-alpha-D-xylo-4-hexulose. The enzyme is involved in biosynthesis of pseudaminic acid for glycomodification of the bacterial falgellins, overview	Campylobacter jejuni 11168	UDP-2-acetamido-2,6-dideoxy-beta-L-arabino-4-hexulose + UDP-2-acetamido-2,6-dideoxy-alpha-D-xylo-4-hexulose + 2 H2O	NMR analysis of reaction products, overview	?
additional information	the flagellar aminotransferases Cj1294 utilize only UDP-2-acetamido-2,6-dideoxy-beta-L-arabino-4-hexulose as substrate producing UDP-4-amino-4,6-dideoxy-beta-L-AltNAc, a precursor in the Pse biosynthetic pathway	Campylobacter jejuni	?	-	?
additional information	the flagellar aminotransferases HP0366 utilize only UDP-2-acetamido-2,6-dideoxy-beta-L-arabino-4-hexulose as substrate producing UDP-4-amino-4,6-dideoxy-beta-L-AltNAc, a precursor in the Pse biosynthetic pathway	Helicobacter pylori	?	-	?
additional information	the flagellar aminotransferases Cj1294 utilize only UDP-2-acetamido-2,6-dideoxy-beta-L-arabino-4-hexulose as substrate producing UDP-4-amino-4,6-dideoxy-beta-L-AltNAc, a precursor in the Pse biosynthetic pathway	Campylobacter jejuni 11168	?	-	?

Synonyms

Synonyms	Comment	Organism
Cj1293	-	Campylobacter jejuni
FlaA1	-	Helicobacter pylori
HP0840	-	Helicobacter pylori
PseB	-	Campylobacter jejuni
UDP-alpha-D-GlcNAc modifying dehydratase	-	Helicobacter pylori
UDP-alpha-D-GlcNAc modifying dehydratase	-	Campylobacter jejuni

Temperature Optimum [°C]

Temperature Optimum [°C]	Temperature Optimum Maximum [°C]	Comment	Organism
37	-	assay at	Helicobacter pylori
37	-	assay at	Campylobacter jejuni

pH Optimum

pH Optimum Minimum	pH Optimum Maximum	Comment	Organism
7.2	-	assay at	Helicobacter pylori
7.2	-	assay at	Campylobacter jejuni

Cofactor

Cofactor	Comment	Organism	Structure
additional information	the dehydratase does not require the addition of exogenous cofactor NAD(P)+	Helicobacter pylori
additional information	the dehydratase does not require the addition of exogenous cofactor NAD(P)+	Campylobacter jejuni

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Release 2023.1 (January 2023)