Together with lipids, membrane proteins are a central component of all biological membranes and fulfill important functions in transport and information transfer within and between cells. The majority of membrane proteins are recognized by a signal recognition particle on the basis of signal sequences at the front end of the protein and are incorporated into the membrane of the endoplasmic reticulum during their synthesis. From there, the proteins are transported to most of the important cellular membranes.
Click here for original story, Newly discovered receptor helps to sneak a peek at evolution
Source: Phys.org