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cystine

   Also found in: Medical, Encyclopedia, Wikipedia 0.01 sec.
cys·tine  (sstn)
n.
A white crystalline amino acid, C6H12N2O4S2, formed from the disulfide linkage of two cysteines during folding of many proteins, especially keratin, and stabilizing the tertiary structure of the protein.
[From its discovery in bladder stones.]
cystine [ˈsɪstiːn -tɪn]
n
(Life Sciences & Allied Applications / Biochemistry) a sulphur-containing amino acid present in proteins: yields two molecules of cysteine on reduction. Formula: HOOCCH(NH2)CH2SSCH2CH(NH2)COOH.
[see cysto- (bladder), -ine2; named from its being discovered in a type of urinary calculus]
ThesaurusLegend:  Synonyms Related Words Antonyms
Noun1.cystine - a crystalline amino acid found in proteins (especially keratin); discovered in bladder stones
amino acid, aminoalkanoic acid - organic compounds containing an amino group and a carboxylic acid group; "proteins are composed of various proportions of about 20 common amino acids"


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Gram-negative oxidase-positive and catalase-positive cocci were then inoculated onto cystine trypticase agar.
Carriage of Neisseria meningitidis Serogroup W135 ST-2881 by Chanteau, Suzanne / Emerging Infectious Diseases
Researchers are also focusing on increasing methionine, cystine and lysine for improved animal nutrition.
A United front: QUALISOY[TM] coalition unites U.S. soybean industry ... by Durham, David / Agri Marketing
What we're really selling is a good balance of amino acids--particularly the sulfur amino acids like methionine and cystine to poultry and lysine to hogs.
Behold the bean by Henderson, Pam / Farm Journal
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