Question

write about the ∝-Helix ​

Answer 1

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The ∝-helix forms when a polypeptide chain twists into a right handed or clockwise spiral Some characteristic features of ∝-helical structure of protein are:

• Each turn of the helix has 3.6 amino acids.

• A C=O group of one amino acid is hydrogen bonded to N-H group of the fourth amino acid along the chain.

• Hydrogen bonds are parallel to the axis of helix while R groups extend outward from the helix core.

Myosin in muscle and ∝-keratin in hair are proteins with almost entire ∝-helical secondary structure.