Saha, Ishita published the artcilePhenazinium dyes methylene violet 3RAX and indoine blue bind to DNA by intercalation: Evidence from structural and thermodynamic studies, Computed Properties of 4569-86-2, the publication is Dyes and Pigments (2013), 96(1), 81-91, database is CAplus.
The structural and energetic aspects of the interaction of two important phenazinium dyes methylene violet 3RAX and indoine blue with DNA were studied by spectroscopic and thermochem. techniques. The binding affinity values of both the dyes were of the order of 105 M-1 but methylene violet 3RAX bound to DNA more strongly. Both dyes bound DNA by intercalation but methylene violet 3RAX bound stronger than indoine blue. The DNA binding of both the dyes was exothermic and favored by a small neg. enthalpy and pos. entropy contributions. The effect of ionic strength indicated that electrostatic attraction is an important component of the dye-DNA interaction although the major contribution comes from hydrophobic forces. The temperature dependence of enthalpy changes yielded neg. heat capacity value which was higher for methylene violet 3RAX compared to indoine blue suggesting higher contribution from hydrophobic forces in the interaction of the former. Enthalpy-entropy compensation phenomenon was observed for the binding of both dyes to DNA.
Dyes and Pigments published new progress about 4569-86-2. 4569-86-2 belongs to chlorides-buliding-blocks, auxiliary class Other Aromatic Heterocyclic,Salt,Amine,Benzene, name is 3-Amino-7-(diethylamino)-5-phenylphenazin-5-ium chloride, and the molecular formula is C22H23ClN4, Computed Properties of 4569-86-2.
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