Editing Transferase (section)

==Classification==
Described primarily based on the type of biochemical group transferred, transferases can be divided into ten categories (based on the [[Enzyme Commission number|EC Number]] classification).<ref name="EC2 List">{{cite web|title=EC2 Transferase Nomenclature|url=http://www.chem.qmul.ac.uk/iubmb/enzyme/EC2/|work=School of Biological & Chemical Sciences at Queen Mary, University of London|publisher=Nomenclature Committee of the International Union of Biochemistry and Molecular Biology (NC-IUBMB)|access-date=4 November 2013}}</ref>  These categories comprise over 450 different unique enzymes.<ref name=EB>{{cite encyclopedia | title = Transferase | url = http://www.britannica.com/EBchecked/topic/602553/transferase | encyclopedia = Encyclopædia Britannica | publisher = Encyclopædia Britannica, Inc | access-date = 28 July 2016 }}</ref>  In the EC numbering system, transferases have been given a classification of '''EC2'''. [[Hydrogen]] is not considered a functional group when it comes to transferase targets; instead, hydrogen transfer is included under [[oxidoreductase]]s,<ref name=EB/> due to electron transfer considerations.

{| class="wikitable"
|+ Classification of transferases into subclasses
! EC number || Examples || Group(s) transferred
|-
| align=''center'' | '''[[:Category:EC 2.1|EC 2.1]]''' || [[methyltransferase]] and formyltransferase || single-[[carbon]] groups
|-
| align=''center'' | '''[[:Category:EC 2.2|EC 2.2]]''' || [[transketolase]] and [[transaldolase]] || [[aldehyde]] or [[ketone]] groups
|-
| align=''center'' | '''[[:Category:EC 2.3|EC 2.3]]''' || [[acyltransferase]] || [[acyl]] groups or groups that become [[alkyl]] groups during transfer
|-
| align=''center'' | '''[[:Category:EC 2.4|EC 2.4]]''' || [[glycosyltransferase]], [[hexosyltransferase]], and [[pentosyltransferase]] || [[glycosyl]] groups, as well as [[hexoses]] and [[pentose]]s
|-
| align=''center'' | '''[[:Category:EC 2.5|EC 2.5]]''' || [[riboflavin synthase]] and [[chlorophyll synthase]] || [[alkyl]] or [[aryl]] groups, other than methyl groups
|-
| align=''center'' | '''[[:Category:EC 2.6|EC 2.6]]''' || [[transaminase]], and [[oximinotransferase]] || [[nitrogen]]ous groups
|-
| align=''center'' | '''[[:Category:EC 2.7|EC 2.7]]''' || [[phosphotransferase]], [[polymerase]], and [[kinase]] || [[phosphorus]]-containing groups; subclasses are based on the acceptor (e.g. [[Alcohol (chemistry)|alcohol]], [[carboxyl]], etc.)
|-
| align=''center'' | '''[[:Category:EC 2.8|EC 2.8]]''' || [[sulfurtransferase]] and [[sulfotransferase]] || [[sulfur]]-containing groups
|-
| align=''center'' | '''[[:Category:EC 2.9|EC 2.9]]''' || [[selenotransferase]] || [[selenium]]-containing groups
|-
| align=''center'' | '''[[:Category:EC 2.10|EC 2.10]]''' || [[molybdenumtransferase]] and [[tungstentransferase]] || [[molybdenum]] or [[tungsten]]
|}