Natural fiber Keratin is a structural protein located at the hard surfaces in many vertebrates. Keratin has two forms, α-keratin and β-keratin and are used by different classes of animals. The naming convention for proteins follows that for keratin, alpha keratin is helical and beta keratin is sheet like. Alpha keratin is found in mammalian hair, skin, nails, horn and quills, while beta keratin can be found in avian and reptilian species in scales, feathers, and beaks. The two different structures of keratin have dissimilar mechanical properties, as seen in their dissimilar applications. The relative alignment of the keratin fibrils has a
Pro Nails Pro Nails "Pro Nails" is the second single by American hip hop artist Kid Sister from her debut album "Ultraviolet" (formerly known as "Dream Date"). The song is better known for its remix, which features a verse by Kanye West. The single was originally released in 2007 and reissued in 2008. Originally a solo track, Kanye West added a guest verse to the song for his 2007 "Can't Tell Me Nothing" mixtape. West discovered the song through A-Trak, who had begun dating Kid Sister. "Pro Nails" was initially released on both 12" vinyl and via the iTunes Store on October