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
Skin Deep (The Outer Limits) Skin Deep (The Outer Limits) "Skin Deep" is an episode of "The Outer Limits" television show. It was first-aired at 4 February 2000, during the sixth season. Sid Camden gets a hold of an experimental holographic disguise device that allows him to acquire the image of his handsome co-worker, Chad Warner... Sid Camden, a rather unremarkable, socially inept man, works in an accounting department of a high-tech company known as "Veil-Tech". He spends much of his spare time in chatrooms. One day Hal, one of the project managers, secretly loans Sid a prototype of one of the company's latest developments