| RAS | 1) Reticular Activating(Activation) System 2) Renal Artery Stenosis |
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| RAS | rapid atrial stimulation; recurrent aphthous stomatitis; reflex activating stimulus; reliability, av... |
| ras | retrovirus-associated DNA sequence |
| Ras GAP | Ras GTPase activating protein |
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| Ras | p21(ras |
| ISG | IFN stimulated genes |
| mdr | Multidrug resistance genes |
| stx | Shiga toxin genes |
| genes, ras | Family of retrovirus-associated DNA sequences (ras) originally isolated from harvey (h-ras, ha-ras, rash) and kirsten (k-ras, ki-ras, rask) murine sarcoma viruses. Ras genes are widely conserved among animal species and sequences corresponding to both h-ras and k-ras genes have been detected in human, avian, murine, and non-vertebrate genomes. The closely related n-ras gene has been detected in human neuroblastoma and sarcoma cell lines. All genes of the family have a similar exon-intron structure and each encodes a p21 protein. (12 Dec 1998) |
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| p21(ras) farnesyl-protein transferase | <enzyme> Transfers the farnesyl moiety from farnesyl pyrophosphate to a cysteine in p21(ras) proteins; composed of an alpha and a beta subunit Registry number: EC 2.5.1.- Synonym: farnesyl-protein transferase p21(ras), ras p21 farnesyl-protein transferase, protein-cysteine farnesyltransferase, pc farnesyltransferase, protein farnesyltransferase, p21(ras) farnesyltransferase, farnesyl-protein transferase-alpha, farnesyl-protein transferase-beta, ft alpha, ft beta, caax farnesyltransferase, ftase enzyme (26 Jun 1999) |
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| ras | <oncogene> One of a family of oncogenes, first identified as transforming genes of Harvey and Kirsten murine sarcoma viruses. (Name from rat sarcoma because Harvey virus, though a mouse virus, obtained its transforming gene during passage in a rat). Transforming protein coded is p21ras, a GTP-binding protein with GTPase activity, that resembles regulatory G-proteins. (18 Nov 1997) |
| ras protein geranylgeranyltransferase | <enzyme> Mammalian enzyme transfers geranylgeranyl groups to a cysteine residue fourth from the c-terminal group of a p21 ras protein, prefers leucine at the cooh terminus; see also rhoa geranylgeranyltransferase and protein geranylgeranyltransferase Registry number: EC 2.5.1.- Synonym: geranylgeranyltransferase ras protein, ras protein gg transferase, ggtase I, caax geranylgeranyl transferase (26 Jun 1999) |
| ras proteins | Small GTP-binding proteins encoded by ras genes (genes, ras) that play a critical role in normal cellular growth, differentiation, and development, and have the potential for malignant transformation. Two of the major ras proteins include the normal cellular form, proto-oncogene protein p21(ras), and the malignant form, oncogene protein p21(ras). (12 Dec 1998) |
| proto-oncogene protein p21(ras) | Cellular protein encoded by the c-ras genes. The protein has GTPase activity and is involved in transmembrane signal transduction as a guanine nucleotide binding protein. Elevated levels of p21 c-ras have been associated with neoplasia. (12 Dec 1998) |
| h-ras | <oncogene> A point-mutated proto-oncogene that is found in melanoma and in carcinoma of colon, lung and pancreatic tissue. (10 Oct 1997) |
| oncogene protein p21(ras) | Transforming protein encoded by ras oncogenes. Point mutations in the cellular ras gene (c-ras) can also result in a mutant p21 protein that can transform mammalian cells. Oncogene protein p21(ras) has been directly implicated in human neoplasms, perhaps accounting for as much as 15-20% of all human tumours. (12 Dec 1998) |
| k-ras | <oncogene> A proto-oncogene that has point mutations and is associated with melanoma, thyroid carcinoma, and acute myelogenous and lymphoblastic leukaemia. (09 Oct 1997) |
| breast cancer susceptibility genes | Inherited factors that predispose to breast cancer. Put otherwise, these genes make one more susceptible to the disease and so increase the risk of developing breast cancer. Two of these genes, BRCA1 and BRCA2, have been identified (and prominently publicised). Several other genes (those for the Li-Fraumeni syndrome, Cowden disease, Muir-Torre syndrome, and ataxia-telangiectasia) are also known to predispose to breast cancer. However, since all of these known breast cancer susceptibility genes together do not account for more than a minor fraction (1/5th at most) of breast cancer that clusters in families, it is clear that more breast cancer genes remain to be discovered. (12 Dec 1998) |
| cancer, breast, susceptibility genes | Inherited factors that predispose to breast cancer. Put otherwise, these genes make one more susceptible to the disease and so increase the risk of developing breast cancer. Two of these genes, BRCA1 and BRCA2, have been identified (and prominently publicised). Several other genes (those for the Li-Fraumeni syndrome, Cowden disease, Muir-Torre syndrome, and ataxia-telangiectasia) are also known to predispose to breast cancer. However, since all of these known breast cancer susceptibility genes together do not account for more than a minor fraction (1/5th at most) of breast cancer that clusters in families, it is clear that more breast cancer genes remain to be discovered. (12 Dec 1998) |
| genes | Located in the nucleus of the cell, genes contain hereditary information that is transferred from cell to cell. (09 Oct 1997) |
| genes, abl | Retrovirus-associated DNA sequences (abl) originally isolated from the abelson murine leukaemia virus (ab-mulv). The proto-oncogene abl (c-abl) codes for a protein that is a member of the tyrosine kinase family. The human c-abl gene is located at 9q34.1 on the long arm of chromosome 9. It is activated by translocation to bcr on chromosome 22 in chronic myelogenous leukaemia. (12 Dec 1998) |
| genes, apc | Tumour suppressor genes located in the 5q21 region on the long arm of chromosome 5. The mutation of these genes is associated with familial adenomatous polyposis (apc stands for adenomatous polyposis coli) and gardner's syndrome, as well as some sporadic colourectal cancers. (12 Dec 1998) |
| genes, arac | Regulatory genes which encode a cyclic AMP receptor protein required for l-arabinose utilization in e. Coli. It is an example of positive control or regulation of gene expression in the bacterial operon. (12 Dec 1998) |
| genes, archaeal | The genetic material of archaea. (12 Dec 1998) |
Synonyms : H-ras Genes, H-ras Oncogenes, Ha-ras Oncogenes, K-ras Genes, K-ras Oncogenes, Ki-ras Oncogenes, N-ras Oncogenes, c-H-ras Genes, c-H-ras Proto-Oncogenes, c-Ha-ras Proto-Oncogenes, c-K-ras Genes, c-K-ras Proto-Oncogenes, c-Ki-ras Proto-Oncogenes, ras Oncogene
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