Bifunctional binding and catalysis
- 1 February 1993
- journal article
- research article
- Published by Taylor & Francis in Supramolecular Chemistry
- Vol. 1 (2), 111-118
- https://doi.org/10.1080/10610279308040656
Abstract
Cyclodextrin dimers can show very strong binding of appropriate substrates, and also significant geometric recognition. When the link between the two cyclodextrin rings carries a catalytic group, good turnover catalysis can be observed. The binding and catalytic properties are comparable with those of some catalytic antibodies. When a cyclodextrin binding group carries two catalytic groups, co-operative bifunctional catalysis can be observed. The details of this process are best understood in a mimic of ribonuclease, but other reactions that show bifunctional catalysis by these enzyme mimics are also being explored. The design of these catalysts was strongly influenced by detailed mechanistic studies of bifunctional catalysed cleavage and isomerization of RNA. A brief description of this evidence for the mechanism is presented. Recent findings on the properties of an isomer of DNA are also discussed.Keywords
This publication has 16 references indexed in Scilit:
- Oligodeoxynucleotides that contain 2',5'' linkages: synthesis and hybridization propertiesJournal of the American Chemical Society, 1992
- Strong binding of ditopic substrates by a doubly linked occlusive C1 clamshell as distinguished from an aversive C2 loveseat cyclodextrin dimerJournal of the American Chemical Society, 1990
- A negative catalytic term requires a common intermediate in the imidazole buffer-catalyzed cleavage and rearrangement of ribodinucleotidesJournal of the American Chemical Society, 1990
- Simulation analysis of structures on the reaction pathway of RNAse AJournal of the American Chemical Society, 1990
- Proton inventory of a bifunctional ribonuclease modelJournal of the American Chemical Society, 1989
- Very strong binding of appropriate substrates by cyclodextrin dimersJournal of the American Chemical Society, 1989
- Geometric evidence on the ribonuclease model mechanismJournal of the American Chemical Society, 1989
- On the mechanism of catalysis by ribonuclease: cleavage and isomerization of the dinucleotide UpU catalyzed by imidazole buffersJournal of the American Chemical Society, 1989
- Proton inventory of the second step of ribonuclease catalysisJournal of the American Chemical Society, 1986
- Characterization of regiospecific AC- and AD-disulfonate capping of .beta.-cyclodextrin. Capping as an efficient production techniqueJournal of the American Chemical Society, 1984