Phosphorylation

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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.

References

  1. ↑ http://www.medterms.com/script/main/art.asp?articlekey=8935
  2. ↑ Molecular Biology of the Cell, 5th Edition, Garland Sciences, Alberts et al, Pg 819-821 and Glossary 27.
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