RAS

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Related to Ras gene: p53, RB gene, Proto oncogene

RAS

(hardware, storage)

RAS

(communications)

RAS

(system)

RAS

(1) See network access server.

(2) (Remote Access Service) A Windows Server feature that allows remote users access to the network from their Windows laptops or desktops via modem. See RRAS and network access server.

(3) (Registration, Admission and Signaling) In an H.323 audio or video system, the RAS is a control channel over which H.225 signaling messages are sent. It provides a central point that all devices monitor for an incoming call signal. See H.225 and H.323.

(4) (Reliability Availability Serviceability) Originally an IBM term, it refers to a computer system's overall reliability, its ability to respond to a failure and its ability to undergo maintenance without shutting it down entirely.

(5) (Row Address Strobe) A clock signal in a memory chip used to pinpoint the row of a particular bit in a row-column matrix. See CAS.
References in periodicals archive ?
The first group's work began with Ras genes, which are abnormal in half of all colon cancers, about 90 percent of pancreatic cancers, and smaller fractions of other human cancers.
In the April 3 SCIENCE, David Sidransky of Johns Hopkins University in Baltimore and his colleagues describe a stool test that detects mutations in the ras gene.
Mutation of the endogenous mouse ras genes or of the transgene is infrequent and unpredictable (Katsuki et al.
8), Duesberg and Klaus Cichutek report that reversing the single nucleotide changes in cancer-causing DNA segments known as ras genes, which were then packaged in viruses, did not prevent them from transforming cells.
The ras gene associated with human cancer is a mutant that produces a protein with one altered amino acid (SN: 11/13/82, p.
Analysis of ras gene mutations in biliary and pancreatic tumors by polymerase chain reaction and direct sequencing.
ras gene mutations in non-small cell lung cancers are associated with shortened survival irrespective of treatment intent.
There are now several lines of evidence showing that nevus sebaceous is caused by genetic postzygotic mosaic mutations in the mitogen-activated protein kinase (MAPK) pathway, which specifically activate ras mutations including H ras and K ras genes.
Ras genes encode a family of proteins with a molecular weight of 21 kDa, composed of 188 amino acids.
The Ras genes code for a family of membrane-bound small guanosine triphosphate-bound proteins that play a key role in the transduction of extracellular mitogenic signals.