Phosphorylation: Difference between revisions
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Phosphorylation is | Phosphorylation is a biochemical reaction where a [[Phosphate group|phosphate group]] (PO4) is covalently bonded to another organic molecule. An example of phosphorylation is the addition of a phosphate to [[ADP|Adenosine Diphosphate]] ([[ADP|ADP]]) to form the molecule [[ATP|Adenosine Triphosphate]] ([[ATP|ATP]])<ref>http://www.medterms.com/script/main/art.asp?articlekey=8935</ref>. Oxidative phosphorylation is the chemical pathway in which [[ATP|ATP]] is synthesised in [[Mitochondria|mitochondria]] and [[Bacteria|bacteria]]. This is driven by the transfer of [[Electron|electrons]] across an [[Electron transfer chain|electron transfer chain]]<ref>Molecular Biology of the Cell, 5th Edition, Garland Sciences, Alberts et al, Pg 819-821 and Glossary 27.</ref>. | ||
Phosphorylation occurs in all domains of life. Its basic function is to switch compounds from one state to another, and back again. | Phosphorylation occurs in all domains of life. Its basic function is to switch compounds from one state to another, and back again. | ||
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An example of phosphorylation is the conversion of glucose to glucose monophosphate, which is a key initial stage of glycolysis. | An example of phosphorylation is the conversion of glucose to glucose monophosphate, which is a key initial stage of glycolysis. | ||
Phosphorylation can also occur by activation of [[Protein kinases|protein kinases]]. They add a phosphate group to proteins which regulate cell activity. | |||
=== References === | === References === | ||
<references /> | <references /> | ||
Revision as of 18:29, 16 October 2018
Phosphorylation is a biochemical reaction where a phosphate group (PO4) is covalently bonded to another organic molecule. An example of phosphorylation is the addition of a phosphate to Adenosine Diphosphate (ADP) to form the molecule Adenosine Triphosphate (ATP)[1]. Oxidative phosphorylation is the chemical pathway in which ATP is synthesised in mitochondria and bacteria. This is driven by the transfer of electrons across an electron transfer chain[2].
Phosphorylation occurs in all domains of life. Its basic function is to switch compounds from one state to another, and back again.
An example of phosphorylation is the conversion of glucose to glucose monophosphate, which is a key initial stage of glycolysis.
Phosphorylation can also occur by activation of protein kinases. They add a phosphate group to proteins which regulate cell activity.
References
- ↑ http://www.medterms.com/script/main/art.asp?articlekey=8935
- ↑ Molecular Biology of the Cell, 5th Edition, Garland Sciences, Alberts et al, Pg 819-821 and Glossary 27.