cysteine

English dictionary entry

Meanings

noun

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

Pronunciation

/ˈsɪs.təˌiːn/ /ˈsɪs.tə.ɪn/ /ˈsɪs.tiˌiːn/ /ˈsɪs.ti.ɪn/ /ˈsɪs.təˌin/ /ˈsɪs.tiˌin/ /ˈsɪˌstin/ LL-Q1860 (eng)-Vealhurl-cysteine.wav

Word forms

cysteine cysteines

Etymology

An alteration of cystine, see -eine.

Synonyms

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

Related words

homocysteine

Derived words

acetylcysteine cysteic cysteinal cysteinate cysteineless cysteinyl dacisteine dicysteine glutamylcysteine guaisteine intercysteine isoprenylcysteine mecysteine moguisteine nitrosocysteine polycysteine selenocysteine tetracysteine thiocysteine

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