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. Author manuscript; available in PMC: 2009 Jul 6.
Published in final edited form as: Virology. 2007 Apr 25;365(1):60–69. doi: 10.1016/j.virol.2007.02.037

Figure 1.

Figure 1

The variola virus topoisomerase/DNA interface. A) Structure of the topoisomerase/DNA interface. DNA contact residues are shown in black. B) Diagram of the topoisomerase/DNA contacts. Dotted lines indicate hydrogen bonds of less than or equal to 3.3 Angstroms. Solid lines indicate Van der Waals contacts of less than or equal to 4.0 Angstroms.