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Ras, from "Rat sarcoma virus", is a family of related proteins that are expressed in all animal cell lineages and organs. All Ras protein family members belong to a class of protein called small GTPase, and are involved in transmitting signals within cells (cellular signal transduction).
The five main families are Ras, Rho, Ran, Rab and Arf GTPases. [2] The Ras family itself is further divided into 6 subfamilies: Ras, Ral, Rap, Rheb, Rad and Rit. Miro is a recent contributor to the superfamily. Each subfamily shares the common core G domain, which provides essential GTPase and nucleotide exchange activity.
While RAS originated as a hardware-oriented [citation needed] term, systems thinking has extended the concept of reliability-availability-serviceability to systems in general, including software: [4] Reliability can be defined as the probability that a system will produce correct outputs up to some given time t . [ 5 ]
Ras Abrouq (Arabic: رأس أبروق; also known as Bir Zekreet) [2] is the northernmost extension of the Zekreet Peninsula, a stretch of land to the north of Dukhan in Qatar. [3] It has a beach of the same name [2] and various archaeological sites. Since the 21st century it has functioned as a tourist site. [2]
RAS p21 protein activator 1 or RasGAP (Ras GTPase activating protein), also known as RASA1, is a 120-kDa cytosolic human protein that provides two principal activities: Inactivation of Ras from its active GTP -bound form to its inactive GDP -bound form by enhancing the endogenous GTPase activity of Ras, via its C-terminal GAP domain
Ras Laffan Industrial City (Arabic: راس لفان, romanized: Ra’s Lafān) is a Qatari industrial hub located 80 kilometres (50 mi) north of Doha. It is administered by QatarEnergy. Ras Laffan Industrial City is Qatar's main site for production of liquefied natural gas and gas-to-liquid.
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Ras (fascism), a title for a regional leader in Ethiopia under fascist Italy; Ras (title), an Ethiopian aristocratic and court title, as in Ras Tafari; Ras cheese, a variety popular in Egypt; RAS syndrome, "redundant acronym syndrome" syndrome; Rás Tailteann, an annual cycling race in Ireland; Stari Ras, a capital city of medieval Serbian ...