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Binding of dimeric aminoglycosides to the HIV-1 rev responsive element (RRE) RNA construct
J B Tok1, L J Dunn, R C Des Jean
1Department of Chemistry, Indiana University-Purdue University Fort Wayne, 46805, USA. tok@york.cuny.edu
Bioorganic & Medicinal Chemistry Letters
|May 17, 2001
Summary
Dimeric neomycin ligands bind the HIV-1 Rev responsive element (RRE) RNA construct 17-fold more effectively than monomeric neomycin. This suggests multiple neomycin binding sites exist within the RRE RNA structure.
Area of Science:
- Molecular Biology
- Biochemistry
- Pharmacology
Background:
- Aminoglycoside antibiotics can bind the HIV-1 Rev responsive element (RRE) RNA.
- Previous studies indicated binding stoichiometry greater than 1:1.
Purpose of the Study:
- To investigate the binding affinity of dimeric neomycin ligands to the HIV-1 RRE RNA construct.
- To explore the implications of dimeric ligand binding on neomycin-RRE interactions.
Main Methods:
- Fluorescence anisotropy studies were employed to quantify binding.
- Comparison of binding affinities between monomeric and dimeric neomycin ligands.
Main Results:
- Dimeric neomycin ligands exhibited approximately 17-fold higher binding affinity to the HIV-1 RRE RNA compared to monomeric neomycin.
- These findings support the existence of multiple neomycin binding sites on the RRE RNA.
Conclusions:
- Dimeric neomycin ligands demonstrate enhanced binding to the HIV-1 RRE RNA.
- The results provide evidence for multiple neomycin binding sites within the RRE RNA construct, impacting potential therapeutic strategies.