Dictionary Definition
isomerase n : an enzyme that catalyzes its
substrate to an isomeric form
User Contributed Dictionary
English
Noun
Extensive Definition
In biochemistry, an isomerase
is an enzyme that
catalyses the structural rearrangement of isomers. Isomerases thus catalyze
reactions of the form
- A → B
Nomenclature
The names of isomerases are formed as "substrate isomerase" (for example, enoyl CoA isomerase), or as "substrate type of isomerase" (for example, phosphoglucomutase).Classification
Isomerases are classified as EC 5 in the EC number classification of enzymes. Isomerases can be further classified into six subclasses:- EC 5.1 includes enzymes that catalyze racemization (racemases) and epimerization (epimerases)
- EC 5.2 includes enzymes that catalyze the isomerization of geometric isomers (cis-trans isomerases)
- EC 5.3 includes intramolecular oxidoreductases
- EC 5.4 includes intramolecular transferases (mutases)
- EC 5.5 includes intramolecular lyases
- EC 5.99 includes other isomerases (including topoisomerases)
References
- EC 5 Introduction from the Department of Chemistry at Queen Mary, University of London
isomerase in Arabic: إيزوميراز
isomerase in Bulgarian: Изомераза
isomerase in Czech: Izomeráza
isomerase in German: Isomerasen
isomerase in Spanish: Isomerasa
isomerase in French: Isomérase
isomerase in Italian: Isomerasi
isomerase in Hebrew: איזומראז
isomerase in Lithuanian: Izomerazės
isomerase in Japanese: 異性化酵素
isomerase in Polish: Izomerazy
isomerase in Portuguese: Isomerase
isomerase in Swedish: Isomeraser
isomerase in Chinese: 異構酶