Deoxyriboses

Part of speech: noun

Definitions

1. Sugars consisting of a five-carbon backbone lacking one oxygen atom, fundamental components of DNA molecules where they alternate with phosphate groups to form the structural framework
2. Five-carbon monosaccharides missing an oxygen atom that serve as key parts of nucleotides, linking with nitrogenous bases and phosphate groups in DNA strands
3. Monosaccharide units composed of five carbons with one less oxygen atom than ribose, playing a crucial role in the backbone structure of deoxyribonucleic acid molecules

Etymology: "Deoxyriboses" is simply the plural of "deoxyribose," and the word is a chemical coinage built from two existing pieces. Its core is "ribose," the five-carbon sugar, and the prefix "deoxy-" signals that one oxygen atom has been removed from it. That prefix is itself a compound: "de-" (from Latin "de," meaning "away from" or "down") joined to "oxy-," from Ancient Greek "oxys," meaning "sharp" or "acid," which chemists used for oxygen-containing compounds. The result is a name that reads like a recipe: take ribose and subtract the oxygen. Chemists needed such a label because the sugar's structure changes in a way that matters for life, since the missing oxygen at one position makes the molecule more stable and suits it to forming the long chains of DNA. The name therefore records a chemical edit rather than a historical event, and its parts are a plain record of how the molecule was understood to differ from its parent sugar.

Synonyms: deoxyribose sugars, pentose sugars