The correct statement about peptides and prot | vedclass

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(C) $1$. The $\alpha$-helix is a common secondary structure where the polypeptide chain is coiled into a right-handed screw (helix) stabilized by intr

Vedclass · Accepted Answer

In $\beta$-pleated sheet structures, peptide chains are held together by intermolecular hydrogen bonds.

Vedclass · Answer

(C) $1$. The $\alpha$-helix is a common secondary structure where the polypeptide chain is coiled into a right-handed screw (helix) stabilized by intramolecular hydrogen bonds between the $C=O$ and $N-H$ groups.$2$. In $\beta$-pleated sheets, the polypeptide chains are laid side-by-side and held together by intermolecular hydrogen bonds, forming a sheet-like structure.$3$. Tertiary structure refers to the overall folding of a single polypeptide chain, not necessarily involving multiple subunits.$4$. Proteins can be biologically active in primary, secondary, tertiary, or quaternary structures; quaternary structure is not a requirement for biological activity.$5$. Therefore, the statement regarding $\beta$-pleated sheets is the correct one.

The correct statement about peptides and proteins is:

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