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
Nissan Nails features an upwards opening tailgate. On the interior, the Nails features "integrated communications" tools, such as cellular phone integration. Nissan Nails The Nissan Nails is a concept pickup truck built by Nissan. It was introduced in 2001 at the Tokyo Auto Show. The Nails is powered by a front-mounted 1.5 L Inline-four engine producing around , with power going to the front wheels. It features a 2-door, 2-seater pickup body style with body panels that Nissan claims are manufactured to be dent and scratch resistant. The load bed of the Nails is placed beneath the wheels, unlike many contemporary pickup