| ribofuranose | The 1,4 cyclic furan form of ribose. (05 Mar 2000) |
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| ribofuranosylthymine | 5-methyluridine;the ribosyl analog of thymidine (deoxyribosylthymine); a nucleoside found in small amounts in ribonucleic acids. Synonym: ribofuranosylthymine, ribosylthymidine. (05 Mar 2000) |
| ribokinase | <enzyme> Substrate ribose may be replaced by deoxyribose Registry number: EC 2.7.1.15 Synonym: deoxyribokinase (26 Jun 1999) |
| ribonuclease | <biochemistry, enzyme, molecular biology> Widely distributed type of enzyme that cleaves RNA. May act as endonucleases or exonucleases depending upon the type of enzyme. Generally recognise target by tertiary structure rather than sequence. Ribonuclease E is involved in the formation of 5S ribosomal RNA from pre rRNA. Ribonuclease F is stimulated by interferons and cleaves viral and host RNA and thus inhibits protein synthesis. Ribonuclease H specifically cleaves an RNA base paired to a complementary DNA strand. Ribonuclease P is an endonuclease that generate t RNA from their precursor transcripts. Ribonuclease T is an endonuclease that removes the terminal AMP from the 3' CCA end of a nonaminoacylated tRNA. Ribonuclease T1 cleaves RNA specifically at guanosine residues. Ribonuclease TIII cleaves double stranded regions of RNA molecules. Acronym: RNase (23 Aug 1998) |
| ribonuclease (Bacillus subtilis) | 1. Ribonuclease (Azotobacter agilis); ribonuclease (Proteus mirabilis); an enzyme catalyzing the endonucleolytic cleavage of RNA to yield 2',3'-cyclic nucleotides. 2. Ribonuclease T1. (05 Mar 2000) |
| ribonuclease (pancreatic) | |
| ribonuclease D | <enzyme> An enzyme (endonuclease) that trims the extra 3' nucleotides from immature tRNA. (05 Mar 2000) |
| ribonuclease h, calf thymus | <enzyme> A ribonuclease that specifically cleaves the RNA moiety of RNA:DNA hybrids. It has been isolated from a wide variety of prokaryotic and eukaryotic organisms (particularly calf thymus) as well as retroviruses. Registry number: EC 3.1.26.4 (12 Dec 1998) |
| ribonuclease t1 | <enzyme> An enzyme catalyzing the endonucleolytic cleavage of RNA at the 3'-position of a guanylate residue. Chemical name: Ribonucleate 3'-guanylo-oligonucleotidohydrolase Registry number: EC 3.1.27.3 (12 Dec 1998) |
| ribonuclease, pancreatic | <enzyme> An enzyme that catalyses the endonucleolytic cleavage of pancreatic ribonucleic acids to 3'-phosphomono- and oligonucleotides ending in cytidylic or uridylic acids with 2',3'-cyclic phosphate intermediates. Registry number: EC 3.1.27.5 (12 Dec 1998) |
| ribonucleases | <enzyme> Enzymes that catalyze the hydrolysis of ester bonds within RNA. Registry number: EC 3.1.- (12 Dec 1998) |
| ribonucleic acid | <molecular biology> A nucleic acid found in all living cells. Plays a role in transferring information from DNA to the protein-forming system of the cell. (16 Dec 1997) |
| ribonucleinase | <biochemistry, enzyme, molecular biology> Widely distributed type of enzyme that cleaves RNA. May act as endonucleases or exonucleases depending upon the type of enzyme. Generally recognise target by tertiary structure rather than sequence. Ribonuclease E is involved in the formation of 5S ribosomal RNA from pre rRNA. Ribonuclease F is stimulated by interferons and cleaves viral and host RNA and thus inhibits protein synthesis. Ribonuclease H specifically cleaves an RNA base paired to a complementary DNA strand. Ribonuclease P is an endonuclease that generate t RNA from their precursor transcripts. Ribonuclease T is an endonuclease that removes the terminal AMP from the 3' CCA end of a nonaminoacylated tRNA. Ribonuclease T1 cleaves RNA specifically at guanosine residues. Ribonuclease TIII cleaves double stranded regions of RNA molecules. Acronym: RNase (23 Aug 1998) |
| ribonucleoprotein | <protein> Complexes of RNA and protein involved in a wide range of cellular processes. Besides ribosomes (with which ribonucleoprotein was originally almost synonymous), in eukaryotic cells both initial RNA transcripts in the nucleus (hnRNA) and cytoplasmic mRNAs exist as complexes with specific sets of proteins. Processing (splicing) of the former is carried out by small nuclear ribonucleoproteins (snRNP). Other examples are the signal recognition particle responsible for targetting proteins to endoplasmic reticulum and a complex involved in termination of transcription. Acronym: RNP (23 Aug 1998) |
| ribonucleoproteins | Proteins conjugated with ribonucleic acids (RNA) or specific RNA. Many viruses are ribonucleoproteins. (12 Dec 1998) |
Synonyms : Aspergillus oryzae Ribonuclease, Guanyl-Specific RNase, RNase Apl, RNase F1, RNase Pch 1, RNase ST, Ribonuclease F1, Ribonuclease F2, Ribonuclease ST, Ribonuclease T-1, T 1 RNase, Guanyl Specific RNase, RNase, Guanyl-Specific, RNase, T 1, Ribonuclease T 1
Synonyms : Pancreatic RNase, RNase I, Ribonuclease (Pancreatic), Ribonuclease I, Pancreatic Ribonuclease, RNase, Pancreatic
Synonyms : Acid Ribonuclease, Alkaline Ribonuclease, Ribonuclease, RNA Nucleases, Ribonuclease, Acid, Ribonuclease, Alkaline
Synonyms : Ribonucleoproteins, Small, U1
Synonyms : Ribonucleoproteins, Small, U2
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| riboflavin |
Riboflavin (E101), also known as vitamin B or vitamin G, is an easily absorbed, water-soluble micronutrient with a key role in maintaining human health. Like the other B vitamins, it supports energy production by aiding in the metabolising of fats, carbohydrates, and proteins. Vitamin B is also required for red blood cell formation and respiration, antibody production, and for regulating human growth and reproduction. ...
Ãâó: en.wikipedia.org/wiki/Riboflavin
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| ribbon |
A ribbon is a thin band of flexible material, typically cloth but also plastic or sometimes metal, used primarily for binding and tying. Cloth (esp.silk) ribbons are often used in connection with dress, but also applied for innumerable useful, ornamental and symbolical purposes; cultures around the world use this device in their hair, around the body, or even as ornamentation on animals, buildings, and other areas. Ribbon is also sometimes used as a package sealer, on par with twine. ...
Ãâó: en.wikipedia.org/wiki/Ribbon
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| ribavirin |
is an antiviral drug (is a nucleoside analogue) active against respiratory syncytial virus and hepatitis C virus (HCV).
Ãâó: www.geocities.com/HotSprings/3982/dictionary.html
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| ribavirin |
A drug used to treat respiratory syncytial virus (RSV) infection in the lungs.
Ãâó: www.stjude.org/glossary
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| ribonuclease |
Any enzyme that hydrolyses RNA.
Ãâó: www.fao.org/docrep/003/X3910E/X3910E21.htm
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| rib | a long strip of inked material for making characters on paper with a typewriter |
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| rib | an award for winning a championship or commemorating some other event |
| rib | any long object resembling a thin line |
| rib | building complex in a continuous row along a road |
| rib | epiphytic fern with straplike usually twisted fronds of tropical Asia and Polynesia and America |
| rib | epiphytic fern found in lowland forests of tropical America |
| rib | fern of North Africa and Azores and Canary Islands |
| rib | perennial grass of marshy meadows and ditches having broad leaves |
| rib | slender yellow-striped North American garter snake |
| rib | deciduous New Zealand tree whose inner bark yields a strong fiber that resembles flax and is called New Zealand cotton |
| rib | soft unsegmented marine worms having a threadlike proboscis and the ability to stretch and contract |
| rib | a variety of water plantain |
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