[EN] The photochemical properties of the DNA duplex (dA)(20) center dot (dT)(20) are compared with those of the parent single strands. It is shown that base pairing increases the probability of absorbing UVA photons, ...
[EN] Transfer of the electronic excitation energy in calf thymus DNA is studied by time-resolved fluorescence spectroscopy. The fluorescence anisotropy, after an initial decay starting on the femtosecond time scale, dwindles ...
[EN] The study addresses interconnected issues related to two major types of cycloadditions between adjacent thymines in DNA leading to cyclobutane dimers (T <> Ts) and (6-4) adducts. Experimental results are obtained for ...