noun Etymology: International Scientific Vocabulary, from cystine + -ein Date: 1884 a crystalline sulfur-containing amino acid C3H7NO2S readily oxidizable to cystine

New Collegiate Dictionary. 2001.

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  • Cystéine — L ou R(+) cystéine   et   D ou S( ) cystéine …   Wikipédia en Français

  • Cysteine — Cystéine Cystéine Général Nom IUPAC acide (R) 2 amino 3 sulfanyl propanoïque Synonymes …   Wikipédia en Français

  • cystéine — [ sistein ] n. f. • 1884; de cystine ♦ Biochim. Acide aminé soufré, constituant des protéines et jouant souvent un rôle catalytique dans les réactions enzymatiques. ● cystéine nom féminin Aminoacide constituant des protéines, qui donne par… …   Encyclopédie Universelle

  • cysteine — [sis′tē in, sis′tē ēn΄] n. a nonessential amino acid, HSCH2CH(NH2)COOH, derived from cystine: see AMINO ACID …   English World dictionary

  • Cysteine — Not to be confused with cystine. CYS redirects here. CYS may also refer to California Youth Symphony. L Cysteine …   Wikipedia

  • cysteine — cysteinic, adj. /sis tee een , in/, n. Biochem. a crystalline amino acid, C3H7O2NS, a component of nearly all proteins, obtained by the reduction of cystine. Abbr.: Cys; Symbol: C [1880 85; alter. of CYSTINE] * * * Sulfur containing nonessential… …   Universalium

  • cysteine — Amino 3 mercaptopropionic acid; the l isomer is found in most proteins; especially abundant in keratin. c. desulfhydrase SYN: cystathionine γ lyase. c. synthase SYN: cystathionine β synthase. * * * cys·teine sis tə .ēn n a sulfur containing amino …   Medical dictionary

  • cysteine — n. a sulphur containing amino acid that is an important constituent of many enzymes. The disulphide (S–S) links between adjacent cysteine molecules in polypeptide chains contribute to the three dimensional molecular structure of proteins …   The new mediacal dictionary

  • cysteine — cisteinas statusas T sritis chemija formulė HSCH₂CH(NH₂)COOH santrumpa( os) Cys, C atitikmenys: angl. cysteine rus. цистеин ryšiai: sinonimas – 2 amino 3 merkaptopropano rūgštis …   Chemijos terminų aiškinamasis žodynas

  • cysteine — (= Cys: C) The only amino acid to contain a thiol (SH) group. In intracellular enzymes the unique reactivity of this group is frequently exploited at the catalytic site. In extracellular proteins found only as half cystine in disulphide bridges… …   Dictionary of molecular biology

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