What is indicated by $^{'} A^{'}$ in given figure?

Hydrophobic bond

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Glycocidic bond

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Disulfide bond

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Peptide bond

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Solution

The correct option is A Disulfide bond
The A in the figure indicates a disulfide bond/bridge formed between two proteins/polypeptides/peptides which have been synthesized using rDNA technology. A disulfide bond is formed between the 2 cysteine (amino acid) residues present on the same or different polypeptide chains. It is very common in proteins and helps to hold the oligomers of a multimeric protein together. It can be seen in insulin, antibody structure etc.
So, the correct answer is 'Disulfide bond'

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