Analysis of bleomycin-induced double-strand
cleavage of hairpin
DNA 12. (A) Double-strand cleavage of [3′-32P]-end-labeled (lane 2) and [5′-32P]-end-labeled
(lane 3) 64-nt hairpin DNA 12 by Fe(II)·bleomycin
A5. Lane 1, [3′-32P]-end-labeled DNA
alone; lane 2, 1.5 μM Fe(II)·BLM A5; lane 3,
1.5 μM Fe(II)·BLM A5; lane 4, [5′-32P]-end-labeled DNA alone. (B) Sequencing gel analysis of
Fe(II)·bleomycin-induced sites of double-strand cleavage of [5′-32P]-end-labeled (lanes 1–7) and [3′-32P]-end-labeled (lanes 8–14) hairpin DNA 12. Each
lane (except lanes 1 and 14) corresponds to a numbered cleavage band,
shown in (A). Lane 1, Maxam–Gilbert G+A sequencing lane of
[5′-32P]-end-labeled DNA 12; lane 2,
band 3a; lane 3, band 3b; lane 4, band 3c; lane 5, band 3d; lane 6,
band 3e; lane 7, band 3f; lane 8, band 2f; lane 9, band 2e; lane 10,
band 2d; lane 11, band 2c; lane 12, band 2b; lane 13, band 2a; lane
14, Maxam–Gilbert G+A sequencing lane of [3′-32P]-end-labeled DNA 12.