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The MAPK/ERK pathway (also known as the Ras-Raf-MEK-ERK pathway) is a chain of proteins in the cell that communicates a signal from a receptor on the surface of the cell to the DNA in the nucleus of the cell. The signal starts when a signaling molecule binds to the receptor on the cell surface and ends when the DNA in the nucleus expresses a ...
Recirculating aquaculture system. Recirculating aquaculture systems (RAS) are used in home aquaria and for fish production where water exchange is limited and the use of biofiltration is required to reduce ammonia toxicity. [ 1 ] Other types of filtration and environmental control are often also necessary to maintain clean water and provide a ...
RAS syndrome, where RAS stands for redundant acronym syndrome (making the phrase "RAS syndrome" autological) is the redundant use of one or more of the words that make up an acronym in conjunction with the abbreviated form. This means, in effect, repeating one or more words from the acronym. For example: PIN number (expanding to personal ...
HEC-RAS is simulation software used in computational fluid dynamics – specifically, to model the hydraulics of water flow through natural rivers and other channels. The program was developed by the United States Army Corps of Engineers in order to manage the rivers, harbors, and other public works under their jurisdiction; it has found wide ...
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.
View/Edit Mouse. GTPase HRas, from "Harvey Rat sarcoma virus", also known as transforming protein p21 is an enzyme that in humans is encoded by the HRAS gene. [ 5 ][ 6 ] The HRAS gene is located on the short (p) arm of chromosome 11 at position 15.5, from base pair 522,241 to base pair 525,549. [ 7 ]
RAS model may refer to: Reliability, availability and serviceability, a computer hardware engineering term originally used by IBM. John Zaller's "Receive-Accept-Sample" model, propounded in his book The Nature and Origins of Mass Opinion. Category: Disambiguation pages.
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 ...