The stability in the following structure is due to the:
Correct answer: D. Hydrogen bonding between NH group of one peptide and CO group of another peptide.
- A. Weak Van Der Waal's forces.
- B. Disulfide bridges.
- C. Presence of unpaired electron in the structure.
- D. Hydrogen bonding between NH group of one peptide and CO group of another peptide.
Explanation
The alpha helix (α-helix) is a type of secondary structure of proteins and is in a right hand-helix conformation in which every backbone N−H group hydrogen bonds to the backbone C=O. group of the amino acid located three or four residues earlier along the protein sequence.
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Chemical bonding explains molecular shape through VSEPR theory and distinguishes sigma bonds from pi bonds. Questions involve hybridization, bond angles, dipole moment and bond energy, including how electron-pair repulsion determines geometry and how bond polarity differs from the overall polarity of a molecule.
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