SAXNS PDDF Calculator

This script estimates the theoretical SAXS PDDF or P(r) function of a given structure from its PDB file.

The Output is scaled so that ΣiP(ri)= i (Number of bins)
This ensures that the value in each bin is independent of the number of bins and simplifies the comparison of multiple P(r) curves.

Select the PDB file:

Plot Quality: (% error in each bin) Plot size (png)

Chain Selection: A only ALL GNOM/GIFT P(r): (Optional)

Number of P(ri) bins: (Min 1Å per bin) Your e-mail:

Calculate PDDF: