alpha helix

noun, Biochemistry
1.
the rodlike spatial configuration of many protein molecules in which the polypeptide backbone is stabilized by hydrogen bonds between amino acids in successive helical turns.
Origin
1950-55
British Dictionary definitions for alpha helix

alpha helix

noun
1.
(biochem) a helical conformation of a polypeptide chain, found abundantly in the structure of proteins
alpha helix in Medicine

alpha helix n.
The helical form, turned in a right-handed direction, of many proteins.

alpha helix in Science
alpha helix
A common structure of proteins, characterized by a single, spiral chain of amino acids stabilized by hydrogen bonds. Compare beta sheet, random coil.