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
African-American hair to as "razor bumps", many prefer not to shave. The Afro-American culture is increasingly embracing natural hair, contributing much to society and media. Such as in art, music, poetry, and other forms of media. From textile artist Sonya Clark, singer Solange Knowles, poet Maya Angelou, and actress Lupita Nyong'o. Also on social media there is an uprising of natural YouTube channels, and blogs. The natural hair community has grown so much they even have their own vocabulary and acronyms. Including in all these different forms of media they are embraced their natural hair, skin, and being. The Natural hair movement