alpha helix

noun Biochemistry.

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 of alpha helix

First recorded in 1950–55

Words nearby alpha helix

alpha emitter, alpha fiber, alpha geek, alpha globulin, alpha granule, alpha helix, alpha iron, alpha male, alpha particle, alpha privative, alpha radiation

British Dictionary definitions for alpha helix

alpha helix

noun

biochem a helical conformation of a polypeptide chain, found abundantly in the structure of proteins

Medical definitions for alpha helix

alpha helix

n.

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

Scientific definitions for alpha helix

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.