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
The Hair and Skin Trading Company The Hair and Skin Trading Company The Hair and Skin Trading Company is a British drone / avant-noise group, formed in 1991 by ex-Loop members Neil Mackay (vocals/bass) and John Wills (drums). Joined by guitarist Nigel Webb and Richard Johnston on samples (who left as a band member during the recording of the first album, but periodically collaborated as a live engineer adding live dub to their sound and whose samples also appear on "Psychedelische Musique" uncredited), they released their debut album "Jo in Nine G Hell" on Beggars Banquet Records in 1992. They also played the Reading Festival that