your uploaded file: 3HOU.pdb:A ProCon Distance(Angstrom) Atom-Prot Residue-Prot Position-Prot Chain-prot Atom-DNA DNA Position-DNA chain-DNA 3.173 CD1 ILE 250 A O2' C 1 3 2.908 CD1 ILE 250 A O4' G 2 3 3.471 CD1 ILE 250 A C1' G 2 3 3.264 CE LYS 323 A O3' A 3 3 3.301 CE LYS 323 A O2' A 3 3 2.520 NZ LYS 323 A O2' A 3 3 The summary of Protein-DNA contact position of your uploaded pdb at <=3.5 Angstrom: For all chain: The total contact position is: 2 At Position: 250 323 *****