cysteine


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. 2014.

Look at other dictionaries:

  • 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 — 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 — noun Etymology: International Scientific Vocabulary, from cystine + ein Date: 1884 a crystalline sulfur containing amino acid C3H7NO2S readily oxidizable to cystine …   New Collegiate Dictionary

  • 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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