Arginine decarboxylase; ADC can be found in two forms: biodegradative and biosynthetic. The biodegradative form may play a role in regulating pH by consuming proteins; Belongs to the Orn/Lys/Arg decarboxylase class-I family.

Biosynthetic arginine decarboxylase, PLP-binding; Catalyzes the biosynthesis of agmatine from arginine. Belongs to the Orn/Lys/Arg decarboxylase class-II family. SpeA subfamily.

Arginine decarboxylase; ADC can be found in two forms: biodegradative and biosynthetic. The biodegradative form may play a role in regulating pH by consuming proteins; Belongs to the Orn/Lys/Arg decarboxylase class-I family.

S-adenosylmethionine decarboxylase; Catalyzes the decarboxylation of S-adenosylmethionine to S- adenosylmethioninamine (dcAdoMet), the propylamine donor required for the synthesis of the polyamines spermine and spermidine from the diamine putrescine.

Lysine decarboxylase, acid-inducible; Inducible lysine decarboxylase that catalyzes the proton- dependent decarboxylation of L-lysine to produce the polyamine cadaverine and carbon dioxide. Plays a role in pH homeostasis by consuming protons and neutralizing the acidic by- products of carbohydrate fermentation. Belongs to the Orn/Lys/Arg decarboxylase class-I family.

Lysine decarboxylase 2, constitutive; Plays a role in lysine utilization by acting as a lysine decarboxylase.

Lysine decarboxylase, acid-inducible; Inducible lysine decarboxylase that catalyzes the proton- dependent decarboxylation of L-lysine to produce the polyamine cadaverine and carbon dioxide. Plays a role in pH homeostasis by consuming protons and neutralizing the acidic by- products of carbohydrate fermentation. Belongs to the Orn/Lys/Arg decarboxylase class-I family.

Diaminopimelate decarboxylase, PLP-binding; Specifically catalyzes the decarboxylation of meso- diaminopimelate (meso-DAP) to L-lysine. Is not active against the DD- or LL-isomers of diaminopimelate; Belongs to the Orn/Lys/Arg decarboxylase class-II family. LysA subfamily.

Lysine decarboxylase, acid-inducible; Inducible lysine decarboxylase that catalyzes the proton- dependent decarboxylation of L-lysine to produce the polyamine cadaverine and carbon dioxide. Plays a role in pH homeostasis by consuming protons and neutralizing the acidic by- products of carbohydrate fermentation. Belongs to the Orn/Lys/Arg decarboxylase class-I family.

Ornithine decarboxylase isozyme, inducible; Protein involved in polyamine biosynthetic process; Belongs to the Orn/Lys/Arg decarboxylase class-I family.

Coenzyme A biosynthesis bifunctional protein CoaBC; Catalyzes two sequential steps in the biosynthesis of coenzyme A. In the first step cysteine is conjugated to 4'- phosphopantothenate to form 4-phosphopantothenoylcysteine. In the second step the latter compound is decarboxylated to form 4'-phosphopantotheine. In the C-terminal section; belongs to the PPC synthetase family.

Aspartate 1-decarboxylase; Catalyzes the pyruvoyl-dependent decarboxylation of aspartate to produce beta-alanine; Belongs to the PanD family.

KHG/KDPG aldolase; Involved in the degradation of glucose via the Entner- Doudoroff pathway. Catalyzes the reversible, stereospecific retro-aldol cleavage of 2-Keto-3-deoxy-6-phosphogluconate (KDPG) to pyruvate and D- glyceraldehyde-3-phosphate. In the synthetic direction, it catalyzes the addition of pyruvate to electrophilic aldehydes with si-facial selectivity. It accepts some nucleophiles other than pyruvate, including 2-oxobutanoate, phenylpyruvate, and fluorobutanoate. It has a preference for the S-configuration at C2 of the electrophile.

Glyoxylate carboligase; Catalyzes the condensation of two molecules of glyoxylate to give 2-hydroxy-3-oxopropanoate (also termed tartronate semialdehyde).

KHG/KDPG aldolase; Involved in the degradation of glucose via the Entner- Doudoroff pathway. Catalyzes the reversible, stereospecific retro-aldol cleavage of 2-Keto-3-deoxy-6-phosphogluconate (KDPG) to pyruvate and D- glyceraldehyde-3-phosphate. In the synthetic direction, it catalyzes the addition of pyruvate to electrophilic aldehydes with si-facial selectivity. It accepts some nucleophiles other than pyruvate, including 2-oxobutanoate, phenylpyruvate, and fluorobutanoate. It has a preference for the S-configuration at C2 of the electrophile.

Malic enzyme: putative oxidoreductase/phosphotransacetylase; Putative multimodular enzyme; In the N-terminal section; belongs to the malic enzymes family.

KHG/KDPG aldolase; Involved in the degradation of glucose via the Entner- Doudoroff pathway. Catalyzes the reversible, stereospecific retro-aldol cleavage of 2-Keto-3-deoxy-6-phosphogluconate (KDPG) to pyruvate and D- glyceraldehyde-3-phosphate. In the synthetic direction, it catalyzes the addition of pyruvate to electrophilic aldehydes with si-facial selectivity. It accepts some nucleophiles other than pyruvate, including 2-oxobutanoate, phenylpyruvate, and fluorobutanoate. It has a preference for the S-configuration at C2 of the electrophile.

Phosphoenolpyruvate carboxykinase [ATP]; Involved in the gluconeogenesis. Catalyzes the conversion of oxaloacetate (OAA) to phosphoenolpyruvate (PEP) through direct phosphoryl transfer between the nucleoside triphosphate and OAA. Belongs to the phosphoenolpyruvate carboxykinase (ATP) family.

KHG/KDPG aldolase; Involved in the degradation of glucose via the Entner- Doudoroff pathway. Catalyzes the reversible, stereospecific retro-aldol cleavage of 2-Keto-3-deoxy-6-phosphogluconate (KDPG) to pyruvate and D- glyceraldehyde-3-phosphate. In the synthetic direction, it catalyzes the addition of pyruvate to electrophilic aldehydes with si-facial selectivity. It accepts some nucleophiles other than pyruvate, including 2-oxobutanoate, phenylpyruvate, and fluorobutanoate. It has a preference for the S-configuration at C2 of the electrophile.

Phosphoenolpyruvate carboxylase; Forms oxaloacetate, a four-carbon dicarboxylic acid source for the tricarboxylic acid cycle.

Glutamate decarboxylase A, PLP-dependent; Converts glutamate to gamma-aminobutyrate (GABA), consuming one intracellular proton in the reaction. The gad system helps to maintain a near-neutral intracellular pH when cells are exposed to extremely acidic conditions. The ability to survive transit through the acidic conditions of the stomach is essential for successful colonization of the mammalian host by commensal and pathogenic bacteria.

Glutamate decarboxylase B, PLP-dependent; Converts glutamate to gamma-aminobutyrate (GABA), consuming one intracellular proton in the reaction. The gad system helps to maintain a near-neutral intracellular pH when cells are exposed to extremely acidic conditions. The ability to survive transit through the acidic conditions of the stomach is essential for successful colonization of the mammalian host by commensal and pathogenic bacteria; Belongs to the group II decarboxylase family.

Glutamate decarboxylase A, PLP-dependent; Converts glutamate to gamma-aminobutyrate (GABA), consuming one intracellular proton in the reaction. The gad system helps to maintain a near-neutral intracellular pH when cells are exposed to extremely acidic conditions. The ability to survive transit through the acidic conditions of the stomach is essential for successful colonization of the mammalian host by commensal and pathogenic bacteria.

Aspartate 1-decarboxylase; Catalyzes the pyruvoyl-dependent decarboxylation of aspartate to produce beta-alanine; Belongs to the PanD family.

Glutamate decarboxylase B, PLP-dependent; Converts glutamate to gamma-aminobutyrate (GABA), consuming one intracellular proton in the reaction. The gad system helps to maintain a near-neutral intracellular pH when cells are exposed to extremely acidic conditions. The ability to survive transit through the acidic conditions of the stomach is essential for successful colonization of the mammalian host by commensal and pathogenic bacteria; Belongs to the group II decarboxylase family.

Glutamate decarboxylase A, PLP-dependent; Converts glutamate to gamma-aminobutyrate (GABA), consuming one intracellular proton in the reaction. The gad system helps to maintain a near-neutral intracellular pH when cells are exposed to extremely acidic conditions. The ability to survive transit through the acidic conditions of the stomach is essential for successful colonization of the mammalian host by commensal and pathogenic bacteria.

Glutamate decarboxylase B, PLP-dependent; Converts glutamate to gamma-aminobutyrate (GABA), consuming one intracellular proton in the reaction. The gad system helps to maintain a near-neutral intracellular pH when cells are exposed to extremely acidic conditions. The ability to survive transit through the acidic conditions of the stomach is essential for successful colonization of the mammalian host by commensal and pathogenic bacteria; Belongs to the group II decarboxylase family.

Aspartate 1-decarboxylase; Catalyzes the pyruvoyl-dependent decarboxylation of aspartate to produce beta-alanine; Belongs to the PanD family.

Glyoxylate carboligase; Catalyzes the condensation of two molecules of glyoxylate to give 2-hydroxy-3-oxopropanoate (also termed tartronate semialdehyde).

KHG/KDPG aldolase; Involved in the degradation of glucose via the Entner- Doudoroff pathway. Catalyzes the reversible, stereospecific retro-aldol cleavage of 2-Keto-3-deoxy-6-phosphogluconate (KDPG) to pyruvate and D- glyceraldehyde-3-phosphate. In the synthetic direction, it catalyzes the addition of pyruvate to electrophilic aldehydes with si-facial selectivity. It accepts some nucleophiles other than pyruvate, including 2-oxobutanoate, phenylpyruvate, and fluorobutanoate. It has a preference for the S-configuration at C2 of the electrophile.

Glyoxylate carboligase; Catalyzes the condensation of two molecules of glyoxylate to give 2-hydroxy-3-oxopropanoate (also termed tartronate semialdehyde).

Oxalyl CoA decarboxylase, ThDP-dependent; Involved in the catabolism of oxalate and in the adapatation to low pH via the induction of the oxalate-dependent acid tolerance response (ATR). Catalyzes the decarboxylation of oxalyl-CoA to yield carbon dioxide and formyl-CoA; Belongs to the TPP enzyme family.

Lysine decarboxylase 2, constitutive; Plays a role in lysine utilization by acting as a lysine decarboxylase.

Lysine decarboxylase, acid-inducible; Inducible lysine decarboxylase that catalyzes the proton- dependent decarboxylation of L-lysine to produce the polyamine cadaverine and carbon dioxide. Plays a role in pH homeostasis by consuming protons and neutralizing the acidic by- products of carbohydrate fermentation. Belongs to the Orn/Lys/Arg decarboxylase class-I family.

Lysine decarboxylase 2, constitutive; Plays a role in lysine utilization by acting as a lysine decarboxylase.

Diaminopimelate decarboxylase, PLP-binding; Specifically catalyzes the decarboxylation of meso- diaminopimelate (meso-DAP) to L-lysine. Is not active against the DD- or LL-isomers of diaminopimelate; Belongs to the Orn/Lys/Arg decarboxylase class-II family. LysA subfamily.

Lysine decarboxylase 2, constitutive; Plays a role in lysine utilization by acting as a lysine decarboxylase.

Ornithine decarboxylase isozyme, inducible; Protein involved in polyamine biosynthetic process; Belongs to the Orn/Lys/Arg decarboxylase class-I family.

Diaminopimelate decarboxylase, PLP-binding; Specifically catalyzes the decarboxylation of meso- diaminopimelate (meso-DAP) to L-lysine. Is not active against the DD- or LL-isomers of diaminopimelate; Belongs to the Orn/Lys/Arg decarboxylase class-II family. LysA subfamily.

Lysine decarboxylase, acid-inducible; Inducible lysine decarboxylase that catalyzes the proton- dependent decarboxylation of L-lysine to produce the polyamine cadaverine and carbon dioxide. Plays a role in pH homeostasis by consuming protons and neutralizing the acidic by- products of carbohydrate fermentation. Belongs to the Orn/Lys/Arg decarboxylase class-I family.