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Solution-phase self-association characteristics and DNA molecular recognition properties are reported for three close analogues of minor groove binding ligands from the thiazotropsin class of lexitropsin molecules, which incorporate isopropyl thiazole as a lipophilic building block. Thiazotropsin B (AcImPyiPrThDp) shows similar self-assembly characteristics to thiazotropsin A (FoPyPyiPrThDp) although being engineered, by incorporation of imidazole in place of N-methyl pyrrole, to swap its DNA recognition target from 5´-ACTAGT-3´ to 5´-ACGCGT-3´. Replacement of the formamide head-group in thiazotropsin A by nicotinamide in AIK-18/51 results in a measureable difference in solution phase self-assembly character and substantially enhanced DNA association characteristics. The structures and associated thermodynamic parameters of self-assembled ligand aggregates and their complexes with respective DNA targets are considered in the context of cluster targeting of DNA by minor groove complexes.
- DNA recognition
- isothermal titration calorimetry
- minor groove binder
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- 1 Finished
SMSdrug.net: Alignment Of Synthesis, Medicinal Chemistry And Strucrural Genomics To Accelerate Uk Drug Discovery: Network SMS-Drug
1/09/11 → 31/08/15