4-hydroxybenzoate decarboxylase

This enzyme belongs to the family of lyases, specifically the carboxy-lyases, which cleave carbon-carbon bonds. The systematic name of this enzyme class is 4-hydroxybenzoate carboxy-lyase (phenol-forming). Other names in common use include p-hydroxybenzoate decarboxylase, and 4-hydroxybenzoate carboxy-lyase. This enzyme participates in benzoate degradation via coa ligation.

References

Grant DJW and Patel JC (1969). "Non-oxidative decarboxylation of p-hydroxybenzoic acid, gentisic acid, protocatechuic acid, and gallic acid by Klebsiella aerogenes (Aerobacter aerogenes)". J. Microbiol. Serol. 35: 325–343.
Tschech A and Fuchs G (1989). "Anaerobic degradation of phenol via carboxylation to 4-hydroxybenzoate - in vitro study of isotope exchange between (CO2)-C-14 and 4-hydroxybenzoate". Arch. Microbiol. 152 (6): 594–599. doi:10.1007/BF00425493.

Carbon-carbon lyases (EC 4.1)

4.1.1: Carboxy-lyases	Acetoacetate decarboxylase Adenosylmethionine decarboxylase Aromatic L-amino acid decarboxylase Glutamate decarboxylase Histidine decarboxylase Lysine decarboxylase Malonyl-CoA decarboxylase Ornithine decarboxylase Oxaloacetate decarboxylase Phosphoenolpyruvate carboxykinase Phosphoenolpyruvate carboxylase Phosphoribosylaminoimidazole carboxylase Pyrophosphomevalonate decarboxylase Pyruvate decarboxylase RuBisCO Uridine monophosphate synthetase/Orotidine 5'-phosphate decarboxylase Uroporphyrinogen III decarboxylase

4.1.2: Aldehyde-lyases	Fructose-bisphosphate aldolase Aldolase A Aldolase B Aldolase C 2-hydroxyphytanoyl-CoA lyase Threonine aldolase

4.1.3: Oxo-acid-lyases	Isocitrate lyase 3-hydroxy-3-methylglutaryl-CoA lyase

4.1.99: Other	Tryptophanase

Enzymes

Activity	Active site Binding site Catalytic triad Oxyanion hole Enzyme promiscuity Catalytically perfect enzyme Coenzyme Cofactor Enzyme catalysis Enzyme kinetics Lineweaver–Burk plot Michaelis–Menten kinetics

Regulation	Allosteric regulation Cooperativity Enzyme inhibitor

Classification	EC number Enzyme superfamily Enzyme family List of enzymes

Types	EC1 Oxidoreductases(list) EC2 Transferases(list) EC3 Hydrolases(list) EC4 Lyases(list) EC5 Isomerases(list) EC6 Ligases(list)

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