Protein Structure

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α-Helix in proteins stabilized mainly by:

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1. **Secondary Structure**: Refers to the local folding patterns of the polypeptide backbone.
2. **$\alpha$-Helix**: A common secondary structure pattern discovered by Linus Pauling.
3. **Stabilization**: It is held together by **intrachain hydrogen bonds**.
4. **Pattern**: The carbonyl Oxygen ($C=O$) of the $i^{th}$ amino acid residue forms a hydrogen bond with the amide Nitrogen ($N-H$) of the $(i+4)^{th}$ residue.
5. **Pitch**: This results in a right-handed coiled structure with $3.6$ residues per turn.

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Secondary structure of proteins is stabilized by:

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