In C. elegans, this protein controls the contractility of smooth muscle, and it also stimulates development of the vulva.  
When the Gurken protein binds to the receptor for this protein in Drosophila, the genes spitz and vein are transcribed to activate that receptor. In AMACO, a domain derived from it contains an overlapping consensus sequence for both O-glucosylation and O-fucosylation.  Deleting the Kringle-1 domain and this domain from tissue plasminogen activator gives the (*) anticoagulant reteplase additional serum half-life.  In C. elegans, this protein controls the contractility of smooth muscle, and it also stimulates development of the vulva.  Iressa and Erbitux are among the drugs that inhibit the receptor of this molecule also known as urogastrone.  Stanley Cohen won the 1986 Nobel Prize in Physiology or Medicine for discovering this protein in the salivary gland extracts of mice. For 10 points, name this growth factor that promotes wound healing and cell division and may affect skin cells.
When the Gurken protein binds to the receptor for this protein in Drosophila, the genes spitz and vein are transcribed to activate that receptor.
{epidermal growth factor} or {EGF} [accept early (beta-){urogastrone}]