Which of the following is true?
(a) The disulfide bridges formed by reduction of the sulfhydryl groups on cysteine stabilizes protein tertiary structure
(b) The disulfide bridges formed by oxidation of the sulfhydryl groups on cysteine destabilizes protein tertiary structure
(c) The disulfide bridges formed by oxidation of the sulfhydryl groups on cysteine stabilizes protein tertiary structure
(d) The disulfide bridges formed by reduction of the sulfhydryl groups on cysteine destabilizes protein tertiary structure
I have been asked this question in an interview.
The doubt is from The Covalent Structure of Proteins topic in division Amino Acids, Peptides and Proteins of Biochemistry