/luy"seen, -sin/, n. Biochem.
a crystalline, basic, amino acid, H2N(CH2)4CH(NH2)COOH, produced chiefly from many proteins by hydrolysis, essential in the nutrition of humans and animals. Abbr.: Lys; Symbol: K
[1890-95; LYS- + -INE2]

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One of the essential amino acids, present in many common proteins.

Its proportion in the proteins of some important food plants (including wheat and corn) is so small that populations dependent on these grains as the sole source of dietary protein suffer from lysine deficiency, affecting growth in children and general well-being in adults. It is used in biochemical and nutritional research, in pharmaceuticals, in fortified foods, and as a nutritional supplement and feed additive.

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      an amino acid released in the hydrolysis of many common proteins but present in small amounts or lacking in certain plant proteins; e.g., gliadin from wheat, zein from corn (maize). First isolated from casein (1889), lysine is one of several so-called essential amino acids for warm-blooded animals; i.e., they cannot synthesize it and require dietary sources. (It is formed in plants, algae, and fungi by two distinct biosynthetic pathways.) Human populations dependent on grains as a sole source of dietary protein suffer from lysine deficiency.

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Universalium. 2010.

Look at other dictionaries:

  • Lysine — Lysine …   Wikipedia

  • lysine — [ lizin ] n. f. • 1897; du gr. lusis « solution, dissolution » ♦ Biochim. 1 ♦ Acide aminé essentiel, l un des vingt constituants des protéines. 2 ♦ Anticorps ou toxine capable de provoquer la lyse cellulaire. 3 ♦ Protéine de l acrosome du… …   Encyclopédie Universelle

  • lysine — lysine. См. лизин. (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд во ВНИРО, 1995 г.) …   Молекулярная биология и генетика. Толковый словарь.

  • Lysine — Lysine,   vom Körper gebildete Abwehrstoffe, die ins Blut eingedrungene Bakterien (Bakteriolysine) oder blutgruppenfremde Blutkörperchen (Hämolysine) auflösen …   Universal-Lexikon

  • lysine — [lī′sēn΄] n. [ LYS(I) + INE3] an essential amino acid, NH2 (CH2) 4CH(NH2)COOH obtained synthetically or by the hydrolysis of certain proteins in digestion: see AMINO ACID …   English World dictionary

  • Lysine — Pour les articles homonymes, voir Lys (homonymie). Lysine L ou S …   Wikipédia en Français

  • lysine — lizinas statusas T sritis chemija apibrėžtis Aminorūgštis. formulė H₂N(CH₂)₄CH(NH₂)COOH santrumpa( os) Lys, K atitikmenys: angl. lysine rus. лизин ryšiai: sinonimas – 2,6 diaminoheksano rūgštis …   Chemijos terminų aiškinamasis žodynas

  • lysine — noun Date: 1892 a crystalline essential amino acid C6H14N2O2 obtained from the hydrolysis of various proteins …   New Collegiate Dictionary

  • lysine — (= Lys; K; 146D) Amino acid; the only carrier of a side chain primary amino group in proteins. Has important structural and chemical roles in proteins …   Dictionary of molecular biology

  • lysine — noun An essential amino acid CHNO found in most animal proteins; essential for growth especially in children. Syn: Lys …   Wiktionary

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