Protein or the physical region of the protein that participates in chemical catalysis. In solution proteins also undergo variation in structure through thermal vibration and the collision with other molecules. Proteins can be informally divided into three main classes, which correlate with typical tertiary structures: globular proteins, fibrous proteins, and membrane proteins. Almost all globular proteins are soluble and many are enzymes. Fibrous proteins are often structural, such as collagen, the major component of connective tissue, or keratin, the protein component of hair and nails. Membrane proteins often serve as receptors or provide channels for polar or charged molecules to pass
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