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Mercaptoethanol breaks which bonds present in the protein?

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in Cell Biology by (121k points)
Mercaptoethanol breaks which bonds present in the protein?

(a) Hydrogen

(b) Disulphide

(c) Covalent

(d) Non-covalent

This question was posed to me in homework.

Question is taken from Chemical Basis of Life in portion Chemical Basis of Life of Cell Biology

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The correct answer is (b) Disulphide

The explanation: The disulfide bonds of a protein can be broken by adding a reducing agent. Mercaptoethanol is one such reducing agent that breaks the disulphide bridge into sulfhydryl groups.

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