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kdsD | D-arabinose 5-phosphate isomerase; Involved in the biosynthesis of 3-deoxy-D-manno-octulosonate (KDO), a unique 8-carbon sugar component of lipopolysaccharides (LPSs). KdsD is not essential in the KDO biosynthesis and can be substituted by GutQ. Catalyzes the reversible aldol-ketol isomerization between D- ribulose 5-phosphate (Ru5P) and D-arabinose 5-phosphate (A5P). (328 aa) | ||||
xylA | D-xylose isomerase; Protein involved in carbohydrate catabolic process and glucose metabolic process; Belongs to the xylose isomerase family. (440 aa) | ||||
sgbU | Putative L-xylulose 5-phosphate 3-epimerase; Catalyzes the isomerization of L-xylulose-5-phosphate to L- ribulose-5-phosphate (Potential). May be involved in the utilization of 2,3-diketo-L-gulonate; Belongs to the L-ribulose-5-phosphate 3-epimerase family. (286 aa) | ||||
yieK | Putative 6-phosphogluconolactonase; Pyrimidine-specific nucleoside hydrolase; Belongs to the glucosamine/galactosamine-6-phosphate isomerase family. (240 aa) | ||||
yihS | Sulphoquinovose isomerase; Catalyzes the isomerization of sulfoquinovose (SQ) to 6- deoxy-6-sulfo-D-fructose (SF). In vitro, can also catalyze the interconversion of mannose, fructose and glucose, or lyxose and xylulose, but has extremely low activity with glucose. (413 aa) | ||||
araA | L-arabinose isomerase; Catalyzes the conversion of L-arabinose to L-ribulose. (500 aa) | ||||
tpiA | Triosephosphate isomerase; Involved in the gluconeogenesis. Catalyzes stereospecifically the conversion of dihydroxyacetone phosphate (DHAP) to D- glyceraldehyde-3-phosphate (G3P); Belongs to the triosephosphate isomerase family. (255 aa) | ||||
pgi | Glucosephosphate isomerase; Protein involved in glycolysis and gluconeogenesis; Belongs to the GPI family. (549 aa) | ||||
rpiB | Ribose 5-phosphate isomerase B/allose 6-phosphate isomerase; Catalyzes the interconversion of ribulose-5-P and ribose-5-P. It probably also has activity on D-allose 6-phosphate. (149 aa) | ||||
trpC | Indole-3-glycerolphosphate synthetase and N-(5-phosphoribosyl)anthranilate isomerase; Bifunctional enzyme that catalyzes two sequential steps of tryptophan biosynthetic pathway. The first reaction is catalyzed by the isomerase, coded by the TrpF domain; the second reaction is catalyzed by the synthase, coded by the TrpC domain. (453 aa) | ||||
lsrG | Autoinducer-2 (AI-2) degrading protein LsrG; Involved in the degradation of phospho-AI-2, thereby terminating induction of the lsr operon and closing the AI-2 signaling cycle. Catalyzes the conversion of (4S)-4-hydroxy-5- phosphonooxypentane-2,3-dione (P-DPD) to 3-hydroxy-5- phosphonooxypentane-2,4-dione (P-HPD). (96 aa) | ||||
manA | Mannose-6-phosphate isomerase; Involved in the conversion of glucose to GDP-L-fucose, which can be converted to L-fucose, a capsular polysaccharide. (391 aa) | ||||
hisA | N-(5'-phospho-L-ribosyl-formimino)-5-amino-1- (5'-phosphoribosyl)-4-imidazolecarboxamide isomerase; Protein involved in histidine biosynthetic process; Belongs to the HisA/HisF family. (245 aa) | ||||
srlQ | D-arabinose 5-phosphate isomerase; Catalyzes the reversible aldol-ketol isomerization between D- ribulose 5-phosphate (Ru5P) and D-arabinose 5-phosphate (A5P). It appears that the physiological function of G-API may be to synthesize the regulatory molecule A5P, which in turn participates in the induction of the gut operon through an unknown mechanism. It is also able of sustaining the biosynthetic pathway of 3-deoxy-D-manno- octulosonate (KDO), a unique 8-carbon sugar component of lipopolysaccharides (LPSs); Belongs to the SIS family. GutQ/KpsF subfamily. (321 aa) | ||||
ygbM | Putative hydroxypyruvate isomerase; Catalyzes the isomerization of 2-oxo-tetronate to 3-oxo- tetronate. (258 aa) | ||||
fucI | L-fucose isomerase; Converts the aldose L-fucose into the corresponding ketose L- fuculose. Is also able to convert D-arabinose into D-ribulose, but this isomerase has a higher affinity for fucose and fuculose than for arabinose and ribulose, respectively. (591 aa) | ||||
kduI | Hexuronate isomerase; Catalyzes the isomerization of 5-dehydro-4-deoxy-D- glucuronate to 3-deoxy-D-glycero-2,5-hexodiulosonate (By similarity). Plays a role in the catabolism of hexuronates under osmotic stress conditions, likely substituting for the regular hexuronate degrading enzyme UxaC whose expression is repressed in these conditions ; Belongs to the KduI family. (278 aa) | ||||
rhaA | L-rhamnose isomerase; Protein involved in carbohydrate catabolic process. (419 aa) | ||||
hyi | Hydroxypyruvate isomerase; Catalyzes the reversible isomerization between hydroxypyruvate and 2-hydroxy-3-oxopropanoate (also termed tartronate semialdehyde). Does not catalyze the isomerization of D-fructose to D- glucose or that of D-xylulose to D-xylose. Also does not catalyze racemization of serine, alanine, glycerate or lactate. (258 aa) | ||||
rpiA | Ribose 5-phosphate isomerase, constitutive; Involved in the first step of the non-oxidative branch of the pentose phosphate pathway. It catalyzes the reversible conversion of ribose-5-phosphate to ribulose 5-phosphate. Can also act on D-ribose-5- diphosphate and D-ribose-5-triphosphate as substrate. (219 aa) | ||||
uxaC | Uronate isomerase; Protein involved in carbohydrate catabolic process; Belongs to the metallo-dependent hydrolases superfamily. Uronate isomerase family. (470 aa) | ||||
agaI | Putative galactosamine-6-phosphate isomerase; Belongs to the glucosamine/galactosamine-6-phosphate isomerase family. (251 aa) | ||||
nagB | Glucosamine-6-phosphate deaminase; Catalyzes the reversible isomerization-deamination of glucosamine 6-phosphate (GlcN6P) to form fructose 6-phosphate (Fru6P) and ammonium ion; Belongs to the glucosamine/galactosamine-6-phosphate isomerase family. NagB subfamily. (266 aa) | ||||
ulaE | L-xylulose 5-phosphate 3-epimerase; Catalyzes the isomerization of L-xylulose-5-phosphate to L- ribulose-5-phosphate. Is involved in the anaerobic L-ascorbate utilization; Belongs to the L-ribulose-5-phosphate 3-epimerase family. (284 aa) |