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Computer-aided molecular modeling and design of DNA-inserting molecules
F J van der Klein-de Gunst1, J H van Boom, R M Liskamp
1Department of Chemistry, Gorlaeus Laboratories, University of Leiden, The Netherlands.
Journal of Computer-Aided Molecular Design
|February 1, 1992
Summary
Researchers explored molecules that insert into DNA base pairs, disrupting hydrogen bonds. Diketopiperazine derivatives, particularly molecule 14, show promise as novel DNA insertors and bisinsertors for potential therapeutic applications.
Area of Science:
- Molecular Biology
- Medicinal Chemistry
- Supramolecular Chemistry
Background:
- DNA intercalators bind between base pairs without disrupting stacking.
- A distinct class of molecules, insertors, may disrupt and replace base pair hydrogen bonds.
Purpose of the Study:
- To investigate molecules capable of inserting into DNA base pairs.
- To explore the structural requirements for DNA insertion and bisinsertion.
- To identify novel insertor and bisinsertor candidates.
Main Methods:
- Synthesis and study of diketopiperazine, barbiturate, alloxan, pyrimidine, hydantoin, urea, succinimide, malonamide, and oxamide derivatives.
- Design and evaluation of bisinsertor/bisintercalator molecules with dual diketopiperazine moieties.
Main Results:
- Several molecules were investigated for their potential to act as DNA insertors.
- The diketopiperazine cyclo-[Gly-Gly] was identified as a potential insertor.
- Molecule 14, a bisinsertor featuring two diketopiperazine units linked by a bisphenol A spacer, emerged as a promising candidate.
Conclusions:
- The study expands the understanding of DNA-base pair interactions beyond intercalation.
- Novel insertor and bisinsertor molecules were identified, with potential applications in molecular biology and medicine.
- Molecule 14 represents a significant advancement in the design of bisinsertors.