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A pentose sugar, C5H10O5, that is a constituent of RNA and of certain vitamins and coenzymes.

[German, alteration of English arabinose, a kind of sugar : (gum) arab(ic) + -in + -ose.]


(ˈraɪbəʊz; -bəʊs)
(Biochemistry) biochem a pentose sugar that is an isomeric form of arabinose and that occurs in RNA and riboflavin. Formula: CH2OH(CHOH)3CHO
[C20: changed from arabinose]


(ˈraɪ boʊs)

a white, crystalline, water-soluble, slightly sweet solid, C5H10O5, a pentose sugar obtained by the hydrolysis of RNA.
[< German Ribose, earlier Ribonsäure (1891) =Ribon (from Arabinose arabinose, by arbitrary rearrangement and shortening) + Säure acid]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.ribose - a pentose sugar important as a component of ribonucleic acid
carbohydrate, saccharide, sugar - an essential structural component of living cells and source of energy for animals; includes simple sugars with small molecules as well as macromolecular substances; are classified according to the number of monosaccharide groups they contain
ribonucleic acid, RNA - (biochemistry) a long linear polymer of nucleotides found in the nucleus but mainly in the cytoplasm of a cell where it is associated with microsomes; it transmits genetic information from DNA to the cytoplasm and controls certain chemical processes in the cell; "ribonucleic acid is the genetic material of some viruses"
References in periodicals archive ?
Synthesis of ribose sugar which leads to RNA formation is a tricky process.
This pathway also generates the ribose required for building the DNA needed to fill this burgeoning population of malignant cells.
From 1980 to 81, he was invited to Tufts University School of Medicine, Boston as a visiting scientist and studied there on monoclonal antibodies to nucleic acids such as poly adenosine diphosphate ribose [poly(ADP-ribose)].
Other readers thought the search for ET might require new definitions for life: "Maybe ribose is ET," said Cabell Smith, drawing a connection between the special issue and Christopher Crockett's "Ribose could have formed in space" (SN: 4/30/16, p.
Packed with vitamin C, ribose and carbohydrates, Complete Hydration also aims to help fight free radicals created during exercise and supports energy levels.
ROS-induced TRPM2 channel activation most probably occurs indirectly via formation of adenosine diphosphate ribose (ADPR) which activates the channel by binding to a special domain located at the C-terminus of the channel [16].
The researchers found that several sugars also give protective benefit but the sugar from RNA, ribose, is more effective than glucose or even xylose, a sugar remarkably similar to ribose, except its components are arranged differently.
But even if the sugar survives fusion kickoff and planet formation, and even if conditions one day favor ribose's creation, there's still a long way to go from ribose to life.
The availability of ribose, in fact, determines the recycling rate of ATP within muscle cells.
Discrepancies in results between the 2 test kits were seen with ribose in 1 isolate (M398) and maltose in 2 isolates (M124 and M397).
The RNA molecule is usually a single strand that folds into different shapes and consists of base units (adenine, guanine, cytosine, and uracil) bonded together with the sugar ribose.
adenine, guanine, uracil, cytosine, or thymine) linked with a phosphate group (P042-, a phosphorus atom linked to four oxygen atoms; the molecule can donate 2 electrons hence its 2- charge) and either a molecule of ribose (a five-carbon ringed sugar) or deoxyribose (a ribose lacking one oxygen atom).