Editing Enzyme Commission number (section)

==Top level codes==
NB:The enzyme classification number is different from the 'FORMAT NUMBER'
{| class="wikitable"
|+ Top-level EC numbers<ref name=moss>{{cite web
| author = Moss GP
| title = Recommendations of the Nomenclature Committee
| publisher = International Union of Biochemistry and Molecular Biology on the Nomenclature and Classification of Enzymes by the Reactions they Catalyse
| url = http://www.sbcs.qmul.ac.uk/iubmb/enzyme/
| archive-url = https://web.archive.org/web/20180910045839/http://www.sbcs.qmul.ac.uk/iubmb/enzyme/
| url-status = dead
| archive-date = 2018-09-10
| access-date = 2006-03-14}}</ref>
|-
! Class
! Reaction catalyzed
! Typical reaction
! Enzyme example(s) with trivial name
|-
! |[[List of EC numbers (EC 1)|EC 1]]<br />''[[Oxidoreductase]]s''
| 
[[Oxidation]]/reduction reactions; transfer of H and O atoms or [[electron]]s from one substance to another
| AH + B → A + BH (<small>'''reduced'''</small>)<br /> A + O → AO (<small>'''oxidized'''</small>)
| [[Dehydrogenase]], [[oxidase]]
|-
! [[List of EC numbers (EC 2)|EC 2]]<br />''[[Transferase]]s''
| 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]]
|-
! [[List of EC numbers (EC 3)|EC 3]]<br />''[[Hydrolase]]s''
| Formation of two products from a substrate by [[hydrolysis]]
| AB + H<sub>2</sub>O → AOH + BH
| [[Lipase]], [[amylase]], [[peptidase]], [[phosphatase]]
|-
! [[List of EC numbers (EC 4)|EC 4]]<br />''[[Lyase]]s''
| Non-hydrolytic addition or removal of groups from substrates. C-C, C-N, C-O or C-S bonds may be cleaved
| RCOCOOH → RCOH + CO<sub>2</sub> or [X-A+B-Y] → [A=B + X-Y]
| [[Decarboxylase]]
|-
! [[List of EC numbers (EC 5)|EC 5]]<br />''[[Isomerase]]s''
| Intramolecule rearrangement, i.e. [[isomer]]ization changes within a single molecule
| ABC → BCA</td>
| [[Isomerase]], [[mutase]]
|-
! [[List of EC numbers (EC 6)|EC 6]]<br />''[[Ligase]]s''
| Join together two molecules by synthesis of new C-O, C-S, C-N or C-C [[covalent bond|bonds]] with simultaneous breakdown of [[Adenosine triphosphate|ATP]]
| X + Y + ATP → XY + ADP + P<sub>i</sub>
| [[Synthetase]]
|-
! [[List of EC numbers (EC 7)|EC 7]]<br />''[[Translocase]]s''
| Catalyse the movement of ions or molecules across membranes or their separation within membranes
| 
| [[Membrane transport protein|Transporter]]
|}