ribose

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ribose (rī´bōs), monosaccharide carbohydrate of universal distribution in living tissue, found in ribonucleic acid (RNA; see nucleic acid), free nucleotides, and various coenzymes. Its close relative, deoxyribose, is a constituent of deoxyribonucleic acid (DNA); ribose has one more oxygen atom in its molecule than deoxyribose. Some of the best procedures for the laboratory preparation of ribose involve the hydrolysis of yeast nucleic acid.

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ribose A monosaccharide, C5H10O5, rarely occurring free in nature but important as a component of RNA (ribonucleic acid). Its derivative deoxyribose, C5H10O4, is equally important as a constituent of DNA (deoxyribonucleic acid), which carries the genetic code in chromosomes.

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ribose A pentose (five‐carbon) sugar which occurs as an intermediate in the metabolism of glucose; especially important in the nucleic acids and various coenzymes: occurs widely in foods.

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ribose An aldopentose monosaccharide, which comprises the carbohydrate component of RNA.

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ribose Aldopentose monosaccharide, which comprises the carbohydrate component of RNA.

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ribose (ry-bohz) n. a pentose sugar that is a component of RNA and several coenzymes. Ribose is also involved in intracellular metabolism.