German

Noun

Cysteine n

1. plural of Cystein

English

Noun

cysteine ‎(countable and uncountable, plural cysteines)

1. (biochemistry) A sulphur-containing nonessential amino acid C₃H₇NO₂S found in most animal proteins; it readily oxidizes to cystine.

Usage notes

When used as the name of a substance, this noun is uncountable, but when used as the name of individual molecules, it is countable.

Synonyms

• E910 when used as a food additive
• E920 when used as an improving agent
• Cys when viewed as a monomer in proteins

Translations