Table 2.

Overview of the number of individual predictive dataset

	Number of predictive PPI pairs	Number of proteins in the PPI pairs
O: Ortholog interaction datasets	3045	1359
G: Shared biological function:GO Ontology	553	523
E: Co-expression	14 837	8024
F: Gene fusion method	6570	5671
N: Gene neighbors method	2008	1637
P: Phylogenetic profile method	15 723	8751
D: Enriched domain pair	2182	1288
AtPIDa	28 062 (putative PPI with GSP)	12 506
	23 396 (putative PPI without GSP)	11 706

^aThrough integration by Naïve Bays Network, AtPID achieved 28 062 PPI pairs with 23 396 pairs from prediction methods. There are seven individual datasets from various approaches, identified by O, G, E, F, N, P and D. The details of each method can be browsed on AtPID FAQ.