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. Author manuscript; available in PMC: 2009 Aug 21.
Published in final edited form as: Biochemistry. 2008 Jun 13;47(27):7147–7157. doi: 10.1021/bi800375m

Figure 5.

Figure 5

(A) Unmodified DDD duplex (PDB entry BDL084), showing the contact of Mg2+ with O6 and N7 of G2 and G22 through coordinated waters at the G2 · C23 → C3 · G22 base-pair step. (B) DDDZ10 duplex, showing the reorganization of waters and the absence of the Mg2+ ion. The Mg2+ ion is colored green in panel A, and the waters are colored red.