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Ribose and Deoxyribose. The 5-carbon sugars ribose and deoxyribose are important components of nucleotides, and are found in RNA and DNA, respectively. The sugars found in nucleic acids are pentose sugars; a pentose sugar has five carbon atoms. A combination of a base and a sugar is called a nucleoside.Ribose, found in RNA, is a normal sugar, with one oxygen atom attached to each carbon atom. Deoxyribose, found in DNA, is a modified sugar, lacking one oxygen atom (hence the name deoxy).he 5-carbon sugars ribose and deoxyribose are important components of nucleotides, and are found in RNA and DNA, respectively.
Ribose is an organic compound with the formula C 5 H 10 O 5; specifically, a pentose monosaccharide (simple sugar) with linear form Hâ(C=O)â(CHOH) 4 âH, which has all the hydroxyl groups on the same side in the Fischer projection.The term may refer to either of two enantiomers.The term usually indicates D-ribose, which occurs widely in nature and is discussed here. Its synthetic mirror image, L-ribose, is not found in nature. -Ribose was first reported in 1891 by Emil Fischer.t is a C'-2 carbon epimer of the sugar. - arabinose (both isomers of which are named for their source, gum arabic) and ribose itself is named as a transposition of the name of arabinose. The ribose Î²-D-ribofuranose forms part of the backbone of RNA.