Meaning of alpha helix in English:

alpha helix


  • One of the two common conformations of the secondary structure of proteins, in which the polypeptide chain assumes the form of a straight, tightly coiled helix, stabilized by hydrogen bonding between carbonyl and amide groups in the peptide linkages of the chain.


1950s; earliest use found in Linus Pauling (1901–1994), chemist and biochemist.