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In chemistry, a molecular knot, or knotane, is a mechanically-interlocked molecular architecture that is analogous to a macroscopic knot. A molecular knot in a trefoil knot configuration is chiral, having at least two enantiomers. Examples of naturally formed knotanes are DNA and certain proteins. Lactoferrin has an unusual biochemical reactivity compared to its linear analogue. Other synthetic molecular knots have a distinct globular shape and nanometer sized dimensions that make them potential building blocks in nanotechnology. The first knot was synthesised by Sauvage in 1989. The term ''knotane'' was coined by Fritz Vögtle ''et al.'' in ''Angewandte Chemie International Edition'' in 2000 by analogy with rotaxane and catenane. The term however has yet to be adopted by IUPAC. Several synthetic knotanes have been reported. A pentafoil knot has also been reported. == See also == * Macrocycles * Supramolecular chemistry 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「molecular knot」の詳細全文を読む スポンサード リンク
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