/uy'seuh looh"seen, -sin/, n. Biochem.
a crystalline amino acid, C6H13O2, occurring in proteins, that is essential to the nutrition of humans and animals. Abbr.: Ile; Symbol: I
[1900-05; ISO- + LEUCINE]

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

It was first isolated in 1904 from fibrin, a protein involved in coagulation. It is used in medicine and biochemical research and as a nutritional supplement.

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      an amino acid present in most common proteins, sometimes comprising 2 to 10 percent by weight. First isolated in 1904 from fibrin, a protein involved in blood-clot formation, isoleucine is one of several so-called essential amino acids for chicks, rats, and other higher animals, including man; i.e., they cannot synthesize it and require dietary sources. In microorganisms and plants, isoleucine is synthesized from the amino acid threonine.

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Universalium. 2010.

Look at other dictionaries:

  • Isoleucine — L ou (2S,3S) (+) isoleucine D ou (2R,3R) (–) isoleucine …   Wikipédia en Français

  • isoleucine — [ izoløsin ] n. f. • 1906; de iso et leucine ♦ Biochim. L un des vingt acides aminés constituants des protéines, isomère de la leucine. ● isoleucine nom féminin Acide aminé essentiel, isomère de la leucine, présent dans de nombreuses protéines.… …   Encyclopédie Universelle

  • isoleucine — isoleucine. См. изолейцин. (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.

  • isoleucine — [ī΄sə lo͞o′sēn΄, ī΄sə lo͞osin] n. [ ISO + LEUCINE] an essential amino acid, CH3CH2CH(CH3)CH(NH2)COOH, an isomer of leucine, found in small amounts in most proteins: see AMINO ACID …   English World dictionary

  • Isoleucine — L Isoleucine IUPA …   Wikipedia

  • isoleucine — 2 Amino 3 methylvaleric acid; the l amino acid found in almost all proteins; an isomer of leucine and, like it, a dietary essential amino acid. * * * iso·leu·cine .ī sō lü .sēn n a crystalline essential amino acid C6H13NO2 isomeric with leucine… …   Medical dictionary

  • isoleucine — izoleucinas statusas T sritis chemija formulė CH₃CH₂CH(CH₃)CH(NH₂)COOH santrumpa( os) Ile, I atitikmenys: angl. isoleucine rus. изолейцин ryšiai: sinonimas – 2 amino 3 metilpentano rūgštis …   Chemijos terminų aiškinamasis žodynas

  • isoleucine — noun Etymology: International Scientific Vocabulary Date: 1903 a crystalline essential amino acid C6H13NO2 isomeric with leucine …   New Collegiate Dictionary

  • isoleucine — (= Ileu; I; 131 D) Hydrophobic amino acid …   Dictionary of molecular biology

  • isoleucine — noun An essential amino acid, CHNO, isomeric with leucine, found in most animal proteins. Syn: Ile …   Wiktionary

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