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. 2006 Feb 10;90(9):3203–3207. doi: 10.1529/biophysj.105.078402

FIGURE 1.

FIGURE 1

(A) Crystal structure of [Eu4(OH)4(Asp)5 (H2O)7]Cl. Carbon, cyan; nitrogen, blue; oxygen, red; and europium, green. Lattice water, hydrogen, and chloride ions are omitted for clarity. The Eu atoms are highlighted with green dots. (B) (Left) Temperature-dependent CD spectra of 22-mer duplex DNA polydGdCpolydGdC (60 μM in basepair) in the absence (all in black at 15°C, 37°C, 60°C, and 85°C) or presence of the complex in Tris buffer (10 mM Tris, 100 mM NaCl, pH = 7.1): 15°C (red); 37°C (green); 60°C (blue); and 85°C (cyan); (Right) Double-stranded GC homopolymer, B-DNA, and Z-DNA. Phosphate, yellow; carbon, cyan; nitrogen, blue; and oxygen, red. Hydrogen and water molecules are omitted for clarity.