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Esterase

Class of enzymes which split esters into an acid and alcohol via hydrolysis

In biochemistry, an esterase is a class of enzyme that splits esters into an acid and an alcohol in a chemical reaction with water called hydrolysis (and as such, it is a type of hydrolase).

A wide range of different esterases exist that differ in their substrate specificity, their protein structure, and their biological function.

EC classification/list of enzymes

EC 3.1.1: Carboxylic ester hydrolases
- Acetylesterase (EC 3.1.1.6), splits off acetyl groups
  - Cholinesterase
    - Acetylcholinesterase, inactivates the neurotransmitter acetylcholine
    - Pseudocholinesterase, broad substrate specificity, found in the blood plasma and in the liver
- Pectinesterase (EC 3.1.1.11), clarifies fruit juices
EC 3.1.2: Thiolester hydrolases
- Thioesterase
  - Ubiquitin carboxy-terminal hydrolase L1
EC 3.1.3: Phosphoric monoester hydrolases
- Phosphatase (EC 3.1.3.x), hydrolyses phosphoric acid monoesters into a phosphate ion and an alcohol
  - Alkaline phosphatase, removes phosphate groups from many types of molecules, including nucleotides, proteins, and alkaloids.
  - Phosphodiesterase (PDE), inactivates the second messenger cAMP
    - cGMP specific phosphodiesterase type 5, is inhibited by Sildenafil (Viagra)
- Fructose bisphosphatase (3.1.3.11), converts fructose-1,6-bisphosphate to fructose-6-phosphate in gluconeogenesis
EC 3.1.4: Phosphoric diester hydrolases
EC 3.1.5: Triphosphoric monoester hydrolases
EC 3.1.6: Sulfuric ester hydrolases (sulfatases)
EC 3.1.7: Diphosphoric monoester hydrolases
EC 3.1.8: Phosphoric triester hydrolases
Exonucleases (deoxyribonucleases and ribonucleases)
- EC 3.1.11: Exodeoxyribonucleases producing 5'-phosphomonoesters
- EC 3.1.13: Exoribonucleases producing 5'-phosphomonoesters
- EC 3.1.14: Exoribonucleases producing 3'-phosphomonoesters
- EC 3.1.15: Exonucleases active with either ribo- or deoxy-
Endonucleases (deoxyribonucleases and ribonucleases)
- Endodeoxyribonuclease
- Endoribonuclease
- either deoxy- or ribo-

Info: Wikipedia Source

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hydrolases esters ec-3.1 neurophysiology

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