Mastering the Reactivity of Cysteine

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Questions and Answers

Which group of amino acids contains a highly reactive thiol group?

  • Cysteine (correct)
  • Alanine
  • Lysine
  • Glutamine

Which molecule is formed when two molecules of cysteine undergo oxidation?

  • Cysteine
  • Glutamine
  • Lysine
  • Cystine (correct)

What is the term used to describe the formation of a disulfide bond between two cysteine residues in a protein?

  • Oxidation
  • Hydrolysis
  • Reduction
  • Disulfide bridge (correct)

Where in eukaryotic organisms does the formation of disulfide bridges occur?

<p>Endoplasmic reticulum (A)</p> Signup and view all the answers

What happens to the sulfhydryl groups of cysteine in extracellular fluids like blood?

<p>They are oxidized (A)</p> Signup and view all the answers

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