en

cystine

1

Terminological databases

EKI terminibaas Esterm

ID 731916 Last modified 03.11.2014
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Domain biochemistry
cystine
  • ditsüsteiin, kahe tsüsteiinimolekuli liitumisel tekkiv keemiline aine, mis võib tekitada kusekive
  • a sulphur-containing amino acid present in proteins: yields two molecules of cysteine on reduction
tsüstiin
cystine
Usage examples
  • Cystine and cysteine are both determined as cysteic acid in hydrolysates of oxidised sample, but calculated as cystine (C6H12N2O4S2, M 240,30 g/mol) by using M 120,15 g/mol (= 0,5 x 240,30 g/mol).
  • Cystine, the oxidized form of cysteine, plays a special role in protein structure since its disulfide group serves as a covalent cross-link between two polypeptide chains or between two points in a single chain. Disulfide cross-links can be cleaved by the action of reducing agents, e.g., mercaptoethanol, which yields two molecules of cysteine from cystine. Cystine can also be oxidized by such agents as performic acid, to yield two molecules of cysteic acid.
C6H12N2O4S2 formula
cystine
Cystin
kystiini

Loomakasvatuse terminibaas

ID 477931 Last modified 13.09.2019
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  • väävlit sisaldav aminohape

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