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Why is DNA referred as an alpha helix?


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April 05, 2014 2:33AM

The DNA helix is formed by the hydrogen bonding of the oxygen in the carboxyl group on one amino acid and the hydrogen in the amino group of the second amino acid.

William Astbury dicovered two different protein structures called alpha form and beta form. The alpha form was a coiled protein that was not stretched out and the beta form was produced when the coil was stretched.

Even though his ideas were not correct naming system of the alpha and beta were kept as the names of the two most common secondary structures for proteins as the alpha helix and the beta pleated sheet.