KBDOCK was built from the June 4th 2013 snapshot which contains 91,190 PDB entries of which 88,290 are proteins.


The Pfam version used is Pfam 27.0 March 2013 which contains 14,831 Pfam entries of which:

Pfam families, domains and repeats will be refered to as Pfam domains. Pfam motifs will be refered to as Pfam peptides.


The total number of PDB chains is 231,405 of which:

Using PfamScan, KBDOCK identifies 288,309 domain structures located on 214,730 chains from 84,738 PDBs.
The total number of Pfam entries which have a PDB structure is 6,516.
Of the 288,309 domain structures:

KBDOCK calculates a total of 251,346 interactions of which

The total number of domain family binding sites (DFBSs) and domain family interactions (DFIs) for each type of interaction is:

Interaction type #DFBS #DFI
Inter-chain hetero DDIs 4,001 2,517
Inter-chain homo DDIs 12,498 4,433
Intra-chain hetero DDIs 3,021 1,487
Intra-chain homo DDIs 745 354
Inter-chain DPIs 38 32
Intra-chain DPIs 22 19
DSPIs 596 --
DLPIs 745 --


The number of Pfam entries which have a Kpax-found structural neighbour with a K-score ≥0.3 is 5,572