Editing Enol (section)

==Biochemistry==
Keto–enol tautomerism is important in several areas of [[biochemistry]].{{cn|date=February 2024}}

The high phosphate-transfer potential of [[phosphoenolpyruvate]] results from the fact that the phosphorylated compound is "trapped" in the less thermodynamically favorable enol form, whereas after dephosphorylation it can assume the keto form.{{cn|date=February 2024}}

The [[enzyme]] [[enolase]] catalyzes the dehydration of [[2-phosphoglyceric acid]] to the enol phosphate ester.  Metabolism of PEP to [[pyruvic acid]] by [[pyruvate kinase]] (PK) generates [[adenosine triphosphate]] (ATP) via [[substrate-level phosphorylation]].<ref>{{cite book |last=Berg |first=Jeremy M. |author2=Tymoczko, Stryer |title=Biochemistry |year=2002 |edition=5th |publisher=[[W.H. Freeman and Company]] |location=New York |isbn=0-7167-3051-0 |url=https://archive.org/details/biochemistrychap00jere |url-access=registration }}</ref>

{| style="background: white; text-align:center;"
|-
| rowspan="5" | [[image:2-phospho-D-glycerate wpmp.png|class=skin-invert-image]]
| colspan="2" style="width:75px" |
| rowspan="5" | [[image:phosphoenolpyruvate wpmp.png|class=skin-invert-image]]
| colspan="2" style="width:75px" |
| rowspan="5" | [[image:pyruvate wpmp.png|class=skin-invert-image]]
|-
|
| H<sub>2</sub>O
| [[Adenosine diphosphate|ADP]]
| [[adenosine triphosphate|ATP]]
|-
| colspan="2" style="width:75px" | [[image:Biochem reaction arrow reversible NYYN horiz med.svg|75px|class=skin-invert-image]]
| colspan="2" style="width:75px" | [[image:Biochem reaction arrow reversible YYNN horiz med.svg|75px|class=skin-invert-image]]
|-
|
| H<sub>2</sub>O
|
|
|-
| colspan="2" style="width:75px" |
| colspan="2" style="width:75px" |
|-
|}