Definition of Alpha helix

Alpha helix: The coiled structure of many proteins consisting of a single chain of amino acids stabilized by hydrogen bonds. The alpha helix was first proposed by Linus Pauling and Robert Corey in a brilliant series of paper in the early 1950s. It is also known as the Pauling-Corey helix. See also: Pauling, Linus.

Source: MedTerms™ Medical Dictionary
http://www.medterms.com/script/main/art.asp?articlekey=24841
Last Editorial Review: 10/9/2012