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
Black Is the Color of My True Love's Hair (EP) Loves You". Burlesque revivalist Dita Von Teese is pictured on the front cover of the EP. Black Is the Color of My True Love's Hair (EP) Black Is the Color of My True Love's Hair is the title of a 2003 EP by the American rock band The Twilight Singers. The song "Black Is the Colour (Of My True Love's Hair)" is a traditional folk song which was first known in the United States about 1915. However, it may have come from Scotland originally. It is about a girl who is waiting for her lover to return from sea. Greg