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In 3° structure of proteins, folding and shaping is done by ____________

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In 3° structure of proteins, folding and shaping is done by ____________

(a) Hydrophobic interactions

(b) Polar interactions

(c) Hydrogen bonding

(d) None of the mentioned

This question was addressed to me in an internship interview.

Asked question is from Tricky Questions and Answers topic in portion Regulation of Gene Expression and Miscellaneous of Biochemistry

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Right choice is (a) Hydrophobic interactions

Best explanation: Globular proteins have a tertiary structure with hydrophobic amino acid residues and a surface region of hydrophilic residues; these hydrophobic interactions are responsible for the folding and shaping of 3° structure of proteins.

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