Table 1

Summary of three benchmark data sets

Data set

RBP86

RBP109

RBP107

Number of protein chains

86

109

107

X-ray crystallography resolution

>3 Å

>3.5 Å

>3.5 Å

Sequence identity

≤70%

≤30%

≤25%

Number of interacting residues

4,568

3,581

2,555

Number of non-interacting residues

15,503

21,526

19,496

Non-interacting/interacting residues

3.39

6.01

7.63

Total number of residues

20,071

25,107

22,051

Cheng et al. BMC Bioinformatics 2008 9(Suppl 12):S6   doi:10.1186/1471-2105-9-S12-S6