Term: cysteine
Literally
meaning: “pertaining
to bladder”
Origin: Anc Greek
κύστις (=sac or anatomical sac such as bladder)
> κύω (=to carry a baby in a sac)
Coined/History
In 1810 English chemist Wiliam Hyde Wollaston
(1766-1828) identified cysteine from urinary bladder stone and because he
believed it to bean oxide gave it the name cystic
oxide. Swidish chemist Jons Jacob Berzelius (1779-1848) later in 1833 used
the term cystine and finally German Eugen Baumann (1846-1896) in 1884 gave the
name cysteine to the product he obtained after reduction of cystine.
Sourse:
Wollaston WH (1810). "On cystic
oxide, a new species of urinary calculus". Philosophical
Transactions of the Royal Society of London 100 (0): 223–30.
Definition
Cysteine is a semi-essential
amino acid that contains sulfur. In the body it is biosynthesized by methionine
and is important for glutathione formation. Cysteine through glutathione plays
a key role in body detoxification from heavy metals.
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