cysteine


cys·te·ine

noun \ˈsis-tə-ˌēn\

Definition of CYSTEINE

:  a crystalline sulfur-containing amino acid C3H7NO2S readily oxidizable to cystine

Origin of CYSTEINE

International Scientific Vocabulary, from cystine + -ein
First Known Use: 1884

cys·teine

noun \ˈsis-tə-ˌēn\   (Medical Dictionary)

Medical Definition of CYSTEINE

: a sulfur-containing amino acid C3H7NO2S occurring in many proteins and glutathione and readily oxidizable to cystine—abbreviation Cys

cysteine

noun    (Concise Encyclopedia)

Sulfur-containing nonessential amino acid. In peptides and proteins, the sulfur atoms of two cysteine molecules are bonded to each other to make cystine, another amino acid. The bonded sulfur atoms form a disulfide bridge, a principal factor in the shape and function of skeletal and connective tissue proteins and in the great stability of structural proteins such as keratin.

Browse

Next Word in the Dictionary: cystic
Previous Word in the Dictionary: cysteamine
All Words Near: cysteine

Seen & Heard

What made you want to look up cysteine? Please tell us where you read or heard it (including the quote, if possible).