رقم التصنيف الأنزيمي
(بالتحويل من عدد EC)
رقم التصنيف الأنزيمي Enzyme Commission number (EC number) هو نظام رقمي لكل نوع من أنواع الأنزيمات يستند إلى آلية عملها وطبيعة التفاعل الكيميائي الذي تتواسطه.
رموز أعلى مستوى
| مجموعة | Reaction catalyzed | Typical reaction | Enzyme example(s) with trivial name |
|---|---|---|---|
| EC 1 Oxidoreductases |
To catalyze oxidation/reduction reactions; transfer of H and O atoms or electrons from one substance to another | AH + B → A + BH (reduced) A + O → AO (oxidized) |
Dehydrogenase, oxidase |
| EC 2 Transferases |
Transfer of a functional group from one substance to another. The group may be methyl-, acyl-, amino- or phosphate group | AB + C → A + BC | Transaminase, kinase |
| EC 3 Hydrolases |
Formation of two products from a substrate by hydrolysis | AB + H2O → AOH + BH | Lipase, amylase, peptidase |
| EC 4 Lyases |
Non-hydrolytic addition or removal of groups from substrates. C-C, C-N, C-O or C-S bonds may be cleaved | RCOCOOH → RCOH + CO2 | Decarboxylase |
| EC 5 Isomerases |
Intramolecule rearrangement, i.e. isomerization changes within a single molecule | AB → BA | Isomerase, mutase |
| EC 6 Ligases |
Join together two molecules by synthesis of new C-O, C-S, C-N or C-C bonds with simultaneous breakdown of ATP | X + Y+ ATP → XY + ADP + Pi | Synthetase |
| ||||||||
مراجع
- ^ Moss، G.P.. Recommendations of the Nomenclature Committee. International Union of Biochemistry and Molecular Biology on the Nomenclature and Classification of Enzymes by the Reactions they Catalyse. Retrieved 2006-03-14.
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