Abstract

DNA thermal denaturation has been investigated in aqueous solutions of diethylsulfoxide (DESO) by means of UV-vis and densimetry methods. It is suggested that, on the one hand, the structural change of entire solutions and, on the other hand, a direct interaction of DESO with DNA are responsible for the observed peculiar behavior. The results obtained were compared with those of dimethylsulfoxide (DMSO), also known from literature.

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