Ras Pathway. Ras is a membrane-associated guanine nucleotide-binding protein that is normally activated in response to the binding of extracellular signals, such as growth factors, RTKs (Receptor Tyrosine Kinases), TCR (T-Cell Receptors) and PMA (Phorbol-12 Myristate-13 Acetate).
Sicily Description. Sicily is Italy's largest island and the largest island in theMediterranean Sea. It's also a geographical and political region of Italy, famed for its beautiful beaches, cuisine, and fascinating history.
The city is noted for its history, culture, architecture and gastronomy, playing an important role throughout much of its existence; it is over 2,700 years old. Palermo is located in the northwest of the island of Sicily, right by the Gulf of Palermo in the Tyrrhenian Sea.The city was founded in 734 BC by the Phoenicians as Ziz ('flower').alermo International Airport, also known as Falcone-Borsellino Airport or Punta Raisi Airport, is dedicated to Giovanni Falcone and Paolo Borsellino, two anti-mafia judges killed by the mafia in the early 1990s, is located 32 km (20 mi) west of Palermo (Punta Raisi).