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4-Hydroxybenzoic acid, also known as p-hydroxybenzoic acid (PHBA), is a monohydroxybenzoic acid, a phenolic derivative of benzoic acid.It is a white crystalline solid that is slightly soluble in water and chloroform but more soluble in polar organic solvents such as alcohols and acetone. 4-Hydroxybenzoic acid is primarily known as the basis for the preparation of its esters, known as parabens ...
The enzyme 4-hydroxybenzoate 3-monooxygenase, also commonly referred to as para-hydroxybenzoate hydroxylase (PHBH), is a flavoprotein belonging to the family of oxidoreductases. Specifically, it is a hydroxylase , and is one of the most studied enzymes and catalyzes reactions involved in soil detoxification, metabolism , and other biosynthetic ...
Butylparaben, or butyl p-hydroxybenzoate, is an organic compound with the formula C 4 H 9 O 2 CC 6 H 4 OH. [1] It is a white solid that is soluble in organic solvents. It has proven to be a highly successful antimicrobial preservative in cosmetics. [2] It is also used in medication suspensions, and as a flavoring additive in food.
The 5 substrates of this enzyme are 4-hydroxybenzoate, NADH, NADPH, H +, and O 2, whereas its 4 products are 3,4-dihydroxybenzoate, NAD +, NADP +, and H 2 O. This enzyme belongs to the family of oxidoreductases , specifically those acting on paired donors, with O2 as oxidant and incorporation or reduction of oxygen.
The enzyme 4-hydroxybenzoate decarboxylase (EC 4.1.1.61) catalyzes the chemical reaction 4-hydroxybenzoate ⇌ {\displaystyle \rightleftharpoons } phenol + CO 2 This enzyme belongs to the family of lyases , specifically the carboxy-lyases, which cleave carbon-carbon bonds.
The 3 substrates of this enzyme are ATP, 4-hydroxybenzoate, and CoA, whereas its 3 products are AMP, diphosphate, and 4-hydroxybenzoyl-CoA. This enzyme belongs to the family of ligases, specifically those forming carbon-sulfur bonds as acid-thiol ligases. The systematic name of this enzyme class is 4-hydroxybenzoate:CoA ligase (AMP-forming).
The 5 substrates of this enzyme are 4-hydroxybenzoate, NADH, NADPH, H +, and O 2, whereas its 5 products are hydroquinone, NAD +, NADP +, H 2 O, and CO 2. This enzyme belongs to the family of oxidoreductases , specifically those acting on paired donors, with O2 as oxidant and incorporation or reduction of oxygen.
The 4 substrates of this enzyme are benzoate, NADPH, H +, and O 2, whereas its 3 products are 4-hydroxybenzoate, NADP +, and H 2 O. This enzyme belongs to the family of oxidoreductases , specifically those acting on paired donors, with O2 as oxidant and incorporation or reduction of oxygen.