In this work, we have characterized the interactions of monospermine porphyrin derivative with calf thymus DNA (ct-DNA) and poly (dG-dC)2 in both B and Z conformation. By several spectroscopic techniques (UV–vis, electronic circular dichroism and resonance light scattering), the binding modes of monospermine porphyrin derivative with different DNA sequences have been elucidated. In the presence of ct-DNA, the porphyrin binds along the external double helix as well as in the presence of B conformation of poly (dG-dC)2. Whilst when the Z form of the poly (dG-dC)2 is induced, a slight intercalation of the porphyrin between the basis has been detected.

Interactions of mono spermine porphyrin derivative with DNAs

Gaeta M.;Purrello R.;D'Urso A.
2020-01-01

Abstract

In this work, we have characterized the interactions of monospermine porphyrin derivative with calf thymus DNA (ct-DNA) and poly (dG-dC)2 in both B and Z conformation. By several spectroscopic techniques (UV–vis, electronic circular dichroism and resonance light scattering), the binding modes of monospermine porphyrin derivative with different DNA sequences have been elucidated. In the presence of ct-DNA, the porphyrin binds along the external double helix as well as in the presence of B conformation of poly (dG-dC)2. Whilst when the Z form of the poly (dG-dC)2 is induced, a slight intercalation of the porphyrin between the basis has been detected.
2020
DNA binding modes
induced CD
porphyrin
spermine derivative
Z-DNA
Circular Dichroism
DNA
Nucleic Acid Conformation
Porphyrins
Spectrophotometry, Ultraviolet
Spermine
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.11769/495552
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