Multiple choice

A 'tripeptide' consists of three amino acids joined by peptide bonds. Which among the following is a tripeptide?

  1. Glutamine

  2. Glutaric acid

  3. Glutathione

  4. Glibenclamide
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Glutathione is a tripeptide that contains an unusual peptide linkage between the amine group of cysteine and the carboxyl group of the glutamate side-chain. It is an antioxidant, preventing damage to important cellular components caused by reactive oxygen species such as free radicals and peroxides.

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