Topoisomer
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'''Topoisomers''' or '''topological isomers''' are [[molecule]]s with the same [[chemical formula]] and stereochemical bond connectivities but different [[topology|topologies]]. Examples of molecules for which there exist topoisomers include [[DNA]], which can form [[knot theory|knot]]s, and [[catenane]]s. [[DNA topology|DNA topoisomers]] can be interchanged by [[enzyme]]s called [[topoisomerase]]s {{Ref|chang}}.
== See also ==
* [[Mechanically-interlocked molecular architectures]]
* [[Catenane]]
* [[Rotaxanes]]
* [[Molecular knot]]
* [[Molecular Borromean rings]]
== References ==
* {{Note|chang}} ''New Molecular Topologies Beyond Catenanes and Rotaxanes'' Essay '''2000''' Theresa Chang American Chemical Society [http://organicdivision.org/essays_2000/chang.pdf Online Article]
[[Category:stereochemistry]]
[[Category:Molecular topology]]
[[Category:Supramolecular chemistry]]