Table 1.

Statistics of DTI datasets [4].

	Drugs (n)	Targets (m)	Interactions	Ratio (n/m)
Enzyme	445	664	2926	0.67
IC	210	204	1476	1.03
GPCR	223	95	635	2.35
Nuclear receptors	54	26	90	2.08

IC: ion channel; GPCR: guanosine-binding protein coupled receptor.