| Cysteine | |||||
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Cysteine is a non-essential amino acid that can be synthesised in the body from the essential amino acids methionine.
Cysteine is required to produce taurine in the body and is a major component of the non-essential amino acid glutathione.
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- Cysteine is related to the non-essential amino acid cystine
- Cysteine can be used as a source of energy by being converted into glucose
- Cysteine strengthens and protects the lining of the intestines (especially the small intestine) and the stomach
- Cysteine in the form of N-acetyl cysteine is used as a supplement
- Most clinical research uses N-acetyl cysteine (NAC) to test theories about cysteine
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Cysteine is one of a few amino acids that contains sulphur, which allows cysteine to bond in a particular way to and maintain the structure of proteins in the body.
Cysteine plays a role in ensuring the proper functioning of the immune system.
Last reviewed: 14 January 2007 || Last updated: 21 August 2007
Related Articles
references
- Cynober LA. Metabolic & Therapeutic Aspects of Amino Acids in Clinical Nutrition. 2nd Edition, 2003. CRC Publishing
- Osiecki, Henry, The Nutrient Bible 2002, BioConcepts Publishing
- Osiecki, Henry. The Physician's Handbook of Clinical Nutrition. 6th edition, 2001, BioConcepts Publishing
- Rolfes SR, Pinna K, Whitney E. Understanding Normal and Clinical Nutrition. 7th Edition, 2005. Brooks Cole Publishing
To learn more, go to the following web sites:
NOTE: Mega doses of any type of vitamin, mineral, amino acid or herbal supplement cannot cure illnesses and in fact can be very dangerous and produce toxic side effects and interfere with medicine you are taking. Always ensure you consult your doctor before taking any type of complementary supplements.
Disclaimer: This guide is not intended to be used for diagnostic or prescriptive purposes. For any treatment or diagnosis of illness, please see your doctor.
