In the tertiary structure of proteins which amino acid is involved in forming covalent bonds?
A) alanine
B) aspartic acid
C) cysteine
D) tryptophan

Question

Quizplus · Accepted Answer

Cysteine is the only amino acid that contains a sulfhydryl (-SH) group, which can form disulfide bonds with another cysteine residue in the protein. Disulfide bonds are covalent bonds that help stabilize the tertiary structure of proteins.

In the Tertiary Structure of Proteins Which Amino Acid Is