|This article needs additional citations for verification. (September 2014)|
An ectodomain is the domain of a membrane protein that extends into the extracellular space (the space outside a cell). Ectodomains are usually the parts of proteins that initiate contact with surfaces, which leads to signal transduction. In SARS-CoV the ectodomain of the spike protein is responsible for attachment to and entry into cells during infection.
|This biochemistry article is a stub. You can help Wikipedia by expanding it.|