| cystinaemia | The presence of cystine in the blood. Origin: cystine + G. Haima, blood (05 Mar 2000) |
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| cystine | <amino acid> The amino acid formed by linking two cysteine residues with a disulphide linkage between the two SH groups. The analagous compound present within proteins is termed two half cysteines. (18 Nov 1997) |
| cystine bridge | A disulfide linkage between two cysteinyl residues in a poly-or oligopeptide or in a protein, any disulfide linkage between any thiol-containing moieties of a larger molecule. Synonym: cystine bridge. (05 Mar 2000) |
| cystine calculus | A calculus composed of cystine, soft and faintly radiopaque. (05 Mar 2000) |
| cystine desulfhydrase | <enzyme> A multifunctional pyridoxal phosphate enzyme. In the final step in the biosynthesis of cysteine it catalyses the cleavage of cystathionine to yield cysteine, ammonia, and 2-ketobutyrate. Chemical name: L-Cystathionine cysteine-lyase (deaminating) Registry number: EC 4.4.1.1 (12 Dec 1998) |
| cystine disease | Lysosomal storage disorders of unknown molecular defect, characterised by widespread deposition of cystine crystals in reticuloendothelial cells. (12 Dec 1998) |
| cystine lyase | <enzyme> An enzyme catalyzing the hydrolysis of l-cystathionine to pyruvate, l-homocysteine, and NH3. See: cystathionine gamma-lyase. Synonym: beta-cystathionase, cystine lyase. (05 Mar 2000) |
| cystine storage disease | Lysosomal storage disorders of unknown molecular defect, characterised by widespread deposition of cystine crystals in reticuloendothelial cells. (12 Dec 1998) |
| cystinosis | Lysosomal storage disorders of unknown molecular defect, characterised by widespread deposition of cystine crystals in reticuloendothelial cells. (12 Dec 1998) |
| cystinotic leukocyte | A leukocyte having an enhanced content of cystine, found in patients with disorders characterised by the storage of cystine; within the leukocyte, the cystine, largely in noncrystalline form, is associated with dense lysosomal particles. (05 Mar 2000) |
| cystinuria | An inherited abnormality of renal tubular transport of dibasic amino acids leading to massive urinary excretion of cystine, lysine, arginine, and ornithine. (12 Dec 1998) |
| cystinyl | Aminoacyl radical of cystine. (05 Mar 2000) |
| cystiphorous | Containing cysts. Synonym: cystigerous, cystiphorous. Origin: cysto-+ G. Phoreo, to carry (05 Mar 2000) |
| cystis | See: cyst, pouch, sac. Origin: G. Kystis (05 Mar 2000) |
| cystis fellea | <anatomy> A digestive organ which stores bile (produced in the liver), used in the digestion and absorption of fats in the duodenum. (27 Sep 1997) |
| cystinemia |
(cys
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| cystinosis |
(cys
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| cystinuria |
(cys
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| cystitome |
(cys
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| cystitis |
(cys
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