Alpha-keratin Alpha-keratin Alpha-keratin, or α-keratin, is a type of keratin found in mammals. This protein is the primary component in hairs, horns, nails and the epidermis layer of the skin. α-keratin is a fibrous structural protein, meaning it is made up of amino acids that form a repeating secondary structure. The secondary structure of α-keratin is very similar to that of a traditional protein α-helix and forms a coiled coil. Due to its tightly wound structure, it can function as one of the strongest biological materials and has various uses in mammals, from predatory claws to hair for warmth. α-keratin is
The Keg of Nails The Keg of Nails The Keg of Nails is a traveling trophy continuously-awarded to the winner of the American college football rivalry game between the Cincinnati Bearcats and Louisville Cardinals. The rivalry has stretched over the span of four conferences from the Missouri Valley Conference, to the Metro Conference to Conference USA, and more recently in the Big East Conference, which in 2013 was renamed to the American Athletic Conference. It is believed to be the oldest rivalry for the Louisville football team and the second oldest for Cincinnati, only behind the annual game with the Miami RedHawks. The trophy