A common motif in the secondary structure of proteins, the alpha helix (α-helix) is a right-handed coiled or spiral conformation, in which every backbone N-H group donates a hydrogen bond to the backbone C=O group of the amino acid four residues earlier (hydrogen bonding). This secondary structure is also sometimes called a classic Pauling-Corey-Branson alpha helix (see below).
Otto or Oddo (c. 851 – 30 November 912), called the Illustrious (der Erlauchte) by later authors, was the Duke of Saxony from 880 to his death. He was the younger son of Duke Liudolf of Saxony and his wife Oda of Billung, and succeeded his brother Bruno as duke after the latter's death in battle in 880. His family, named after his father, is called the Liudolfing, after the accession of his grandson Emperor Otto I also the Ottonian dynasty.
The Hillbilly Bears is an animated television series produced by Hanna-Barbera Productions. It aired as a segment on The Atom Ant/Secret Squirrel Show for two seasons, from 1965 to 1967. During the first half of the 1966-67 television season, The Atom Ant/Secret Squirrel Show was split into two shows, and The Hillbilly Bears aired as part of The Atom Ant Show.