Figure S1
Influence of the dinucleotide sequences on 31P chemical shifts and BII percentages in B-DNA.

Average 31P chemical shift values (dP, referenced to phosphoric acid) of the dinucleotide steps in B-DNA, compiled from values published in the literature (see Table S1). Vertical bars are the standard deviations of dP.

Figure S2
Influence of the conformation of facing phosphate groups on slide parameter.

Slide values (°)plotted versus (e-z)av values averaged on two facing phosphates. BI●BI (blue, (e-z)av = -82.5°), BI●BII (green, (e-z)av = -0.5°) and BII●BII (red, (e-z)av = +72°) are the three possible conformational combinations of facing phosphates. The data were extracted from high resolution X-ray structures of free DNA.