Drug discovery, New light on proteins.

AT ANY given time, there are about 7,000 different types of protein molecule in the average human body cell. Almost a third of these are embedded in the cell’s outer membrane. Some control the movement of substances into and out of the cell. Some transmit signals from the exterior to the interior. The importance of these roles, and the exposed and accessible nature of membrane proteins, mean that such proteins are frequently the targets of drugs. Indeed, around half of the drugs currently on the market work by interacting with proteins in the cell membrane…

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