Uronolactonase

This enzyme belongs to the family of hydrolases, specifically those acting on carboxylic ester bonds. The systematic name of this enzyme class is D-glucurono-6,2-lactone lactonohydrolase. This enzyme is also called glucuronolactonase. This enzyme participates in ascorbate and aldarate metabolism.

References

Winkelman J; Lehninger AL (1958). "Aldono- and uronolactonase of animal tissues". J. Biol. Chem. 233 (4): 794–799. PMID 13587494.

Hydrolase: esterases (EC 3.1)

3.1.1: Carboxylic
ester hydrolases

Lipase

Phospholipase
- A1
- A2
- B

3.1.2: Thioesterase

3.1.3: Phosphatase

3.1.4: Phosphodiesterase

3.1.6: Sulfatase

Nuclease (includes
deoxyribonuclease and
ribonuclease)

3.1.11-16: Exonuclease

Exodeoxyribonuclease	RecBCD

Exoribonuclease	Oligonucleotidase

3.1.21-31: Endonuclease

Endodeoxyribonuclease	Deoxyribonuclease I Deoxyribonuclease II Deoxyribonuclease IV Restriction enzyme UvrABC endonuclease

Endoribonuclease	RNase III RNase H 1 2A 2B 2C RNase P RNase A 1 2 3 4/5 RNase T1 RNA-induced silencing complex

either deoxy- or ribo-	Aspergillus nuclease S1 Micrococcal nuclease

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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