Table 2.

Gel-electrophoretic analysis of photoinduced DNA-strand cleavage in the presence of 3f depending on the irradiation time (A), on the concentration (B), and in the presence of 3c,e–g (C). Lanes 1, 10 and 11 (A) and lane 11 (B): control experiment without 3f. Lanes 1 and 2 (B): control experiment without 3f, irradiated for 2 min. In all cases: c₃ = 2.5 × 10⁻⁵ M, c_DNA = 3.5 × 10⁻⁹ M, anaerobic conditions, irradiation time: 2 min, λ_max = 366 nm.

A
supercoiled open-circular
lane	1	2	3	4	5	6	7	8	9	10	11
irradiation time / min	0	0	0	0.5	1	2	5	10	15	15	15
Strand cleavage / %	11	9	9	16	25	38	73	83	73	24	26
B
lane	1	2	3	4	5	6	7	8	9	10	11
c / 10−5 M	0	0	1.3	1.3	2.5	2.5	3.8	3.8	5.0	5.0	0
strand cleavage / %	13	11	31	32	41	41	71	73	81	81	13
C
lane	1	2	3	4	5	6	7	8	9	10	11
irradiation time / min	0	2	2	0	2	0	2	0	2	0	2
substrate	−	−	ref	3f	3f	3g	3g	3e	3e	3c	3c
strand cleavage / %	14	15	31	15	42	15	46	16	51	17	39