Binding of a tetracationic meso-porphyrin to polyadenylic acid: a spectroscopic study
Ryazanova, O. A.; Voloshin, I. M.; Zozulya, V. N.
Show abstract
Binding of a tetracationic porphyrin (TMPyP4+) to poly(rA) has been studied in neutral buffered solution of low ionic strength in a wide range of molar phosphate-to-dye ratios (P/D) using absorption spectroscopy, polarized fluorescence and fluorimetric titration. Two competitive binding modes were identified: partial intercalation of porphyrin chromophores between adenine bases prevailing at P/D > 20 and its outside binding to poly(rA) backbone dominating at P/D < 6. Both of them were accompanied by enhancement of the porphyrin emission. Absence of the emission quenching near stoichiometric P/D ratios allowed us to assume that external binding occurs without the self-stacking of the porphyrin chromophores.
Matching journals
The top 9 journals account for 50% of the predicted probability mass.
Similar papers in this journal
- Insect wing extract: A novel source for green synthesis of nanoparticles of antioxidant and antimicrobial potential 95%
- Multifunctional Molecular Hybrid for Targeted Colorectal Cancer Cells: Integrating Doxorubicin, AS1411 Aptamer, and T9/U4 ASO 94%
- Green Fabricated Zinc Oxide Nanoformulated Media Enhanced Callus Induction and Regeneration Dynamics of Panicum virgatum L. 93%
Similar papers in this journal
- Hydrothermal Synthesis of Clove Bud-Derived Multifunctional Carbon Dots Passivated with PVP- Antioxidant, Catalysis, and Bioimaging Applications 96%
- Stitching together a nm thick peptide-based semiconductor sheet using UV light 91%
- Platelet Membrane-Coated SPION for Targeted Paclitaxel Delivery and Magnetic Hyperthermia in Cancer Therapy 90%
Similar papers in this journal
- New method for high-throughput measurements of viscosity in submicrometer-sized membrane systems 92%
- pH - responsive, reversible A-motif based DNA hydrogels: synthesis and biosensing applications 91%
- Characterization of a novel mesophilic CTP-dependent riboflavin kinase and rational engineering to create its thermostable homologs 90%
Similar papers in this journal
- Interaction of the Immune System TIM-3 Protein with a Model Cellular Membrane Containing Phosphatidyl-Serine Lipids. 91%
- Resolving the Structure of a Guanine Quadruplex in TMPRSS2 Messenger RNA by Circular Dichroism and Molecular Modeling 91%
- Acidic monosaccharides become incorporated into calcite single crystals 90%
Similar papers in this journal
- Optical tuning of polymer functionalized zinc oxide quantum dots as a selective probe for specific detection of antibiotics 96%
- Role of charge in enhanced nuclear transport andretention of graphene quantum dots 94%
- Electrospun cellulose acetate/gelatin nanofibrous wound dressing containing berberine for diabetic foot ulcer healing: in vitro and in vivo studies 92%
"Similar papers" are the closest papers from that journal in the model's embedding space. They show what the match is built on, but the ranking comes mostly from a classifier over the whole training set, not from these examples alone.