| lysotype | A type within a bacterial species determined by its reaction to specific phages. Origin: Lyso + type (05 Mar 2000) |
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| lysozyme | <cell biology, enzyme> Glycosidase that hydrolyses the bond between N acetyl muramic acid and N acetyl glucosamine, thus cleaving an important polymer of the cell wall of many bacteria. Present in tears, saliva and in the lysomes of phagocytic cells, it is an important antibacterial defence, particularly against gram-positive bacteria. (18 Nov 1997) |
| lyssa | <medicine> Hydrophobia. The plural (Lyssae) has been used to signify the pustules supposed to be developed under the tongue in hydrophobia. Origin: NL. See Lytta. Source: Websters Dictionary (01 Mar 1998) |
| lyssavirus | A genus of the family rhabdoviridae that includes rabies virus and other rabies-like viruses. (12 Dec 1998) |
| lysyl | The univalent radical of lysine. (05 Mar 2000) |
| lysyl 2-oxoglutarate dioxygenase | <enzyme> An enzyme that acts on specific lysyl residues in certain proteins (e.g., collagens) with alpha-ketoglutarate and O2 to produce d-hydroxylysyl residues, succinate, and CO2; this enzyme, which requires Fe2+ and ascorbate, is deficient in Ehlers-Danlos syndrome type VI. Synonym: lysyl 2-oxoglutarate dioxygenase. (05 Mar 2000) |
| lysyl endopeptidase | <enzyme> Alkaline protease with bacteriolytic acitvity from achromobacter lyticus; cleaves carboxyl bond of lysine residues Registry number: EC 3.4.21.50 Synonym: achromobacter protease I, achromopeptidase, lysyl endoprotease (26 Jun 1999) |
| lysyl hydroxylase | <enzyme> An enzyme that acts on specific lysyl residues in certain proteins (e.g., collagens) with alpha-ketoglutarate and O2 to produce d-hydroxylysyl residues, succinate, and CO2; this enzyme, which requires Fe2+ and ascorbate, is deficient in Ehlers-Danlos syndrome type VI. Synonym: lysyl 2-oxoglutarate dioxygenase. (05 Mar 2000) |
| lysyl oxidase | <enzyme> Extracellular enzyme that deaminates lysine and hydroxylysine residues in collagen or elastin to form aldehydes, that then interact with each other or with other lysyl side chains to form crosslinks. (18 Nov 1997) |
| lysyl-bradykinin | <protein> Decapeptide (lysyl bradykinin, amino acid sequence KRPPGFSPFR) produced in kidney. Like bradykinin, an inflammatory mediator (a kinin), causes dilation of renal blood vessels and increased water excretion. (18 Nov 1997) |