Table 1. The two yeast protein-protein interaction networks obtained from two PPI datasets (DIP and MIPS).

Data sets	Data sources	Proteins	Interactions	Essential proteins	Non-essential proteins	Unknown proteins
YDIP_5093	DIP	5093	24743	1167	3591	335
YMIPS_4546	MIPS	4546	12319	1016	3195	335