| Leu | Symbol for leucine radical. (05 Mar 2000) |
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| Leu enkephalin | <protein> A natural peptide neurotransmitter. See: enkephalins. (18 Nov 1997) |
| leuc- | 1. <prefix> A combining form signifying white, colourless; specif. 2. <chemistry> Denoting an extensive series of colourless organic compounds, obtained by reduction from certain other coloured compounds; as, leucaniline, leucaurin, etc. Origin: Gr. White. (29 Oct 1998) |
| leucadendron | <botany> A genus of evergreen shrubs from the Cape of Good Hope, having handsome foliage. Leucadendron argenteum is the silverboom of the colonists. Origin: NL, fr. Gr. White + tree. Source: Websters Dictionary (01 Mar 1998) |
| leucaemia | <haematology> An acute or chronic disease of unknown cause in man and other warm blooded animals that involves the blood forming organs, is characterised by an abnormal increase in the number of leucocytes in the tissues of the body with or without a corresponding increase of those in the circulating blood and is classified according of the type leucocyte most prominently involved. (18 Nov 1997) |
| leucaniline | <chemistry> A colourless, crystalline, organic base, obtained from rosaniline by reduction, and also from other sources. It forms colourless salts. Origin: Leuc- + aniline. Source: Websters Dictionary (01 Mar 1998) |
| leuchaemia | <medicine> See Leucocythaemia. Leuchaemic, Alternative forms: leukaemia, leukaemic. Origin: NL, fr. Gr. White + blood. Source: Websters Dictionary (01 Mar 1998) |
| leucin | <physiology> A white, crystalline, nitrogenous substance formed in the decomposition of albuminous matter by pancreatic digestion, by the action of boiling dilute sulphuric acid, and by putrefaction. It is also found as a constituent of various tissues and organs, as the spleen, pancreas, etc, and likewise in the vegetable kingdom. Chemically it is to be considered as amido-caproic acid. Origin: Gr. White. Source: Websters Dictionary (01 Mar 1998) |
| leucine | <amino acid> The most abundant amino acid found in proteins. Confers hydrophobicity and has a structural rather than a chemical role. (18 Nov 1997) |
| leucine 2,3-aminomutase | <enzyme> Leucine is converted to 3-amino-4-methylpentanoate (beta leucine) Registry number: EC 5.4.3.7 (26 Jun 1999) |
| leucine acetyltransferase | <enzyme> Forms acetyl-l-leucine from acetyl-CoA plus leucine Registry number: EC 2.3.1.- Synonym: leucine acyltransferase (26 Jun 1999) |
| leucine aminopeptidase | <enzyme> An exopeptidase that removes neutral amino acid residues from the N terminus of proteins. (18 Nov 1997) |
| leucine dehydrogenase | <enzyme> An enzyme that catalyses the reaction of l-leucine, water, and NAD+ to produce NADH, ammonia, and 4-methyl-2-oxopentanoate; used in the treatment of certain tumours. (05 Mar 2000) |
| leucine hypoglycaemia | Reduction in blood glucose concentration produced by administration of leucine; believed to reflect the ability of this amino acid to stimulate insulin secretion. (05 Mar 2000) |
| leucine zipper | <molecular biology> Motif found in certain DNA binding proteins. In a region of approximately 35 amino acids, every seventh is a leucine. This facilitates dimerisation of two such proteins to form a functional transcription factor. Examples of proteins containing leucine zippers are products of the proto-oncogenes myc, fos and jun. (15 Oct 1997) |
| RNA, transfer, leu | A transfer RNA which is specific for carrying leucine to sites on the ribosomes in preparation for protein synthesis. (12 Dec 1998) |
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