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. 2015 Apr 16;11(6):2729–2742. doi: 10.1021/ct501025q

Figure 4.

Figure 4

PDB structure 157D(112) residues 13C and 14G shown to illustrate the distance, d0, as well as ω and Ξ angles used to quantify stacking. The 5′ and 3′ subscripts specify the 5′ and 3′ bases, respectively. For this case, d0 = 4.5 Å, ω = 40.7°, and Ξ = 17.3°.