Prediction of Metal Ion Binding Sites of Transmembrane Proteins

Table 1

The training set and independent test set.

Category	Training dataset		Independent verification dataset
Main	NProta	Nrecb	NProta	Nrecb
K^+	63	202	6	17
Ca^2+	78	388	10	51
Na^+	54	223	7	46
Zn^2+	52	241	5	26
Mg^2+	64	209	10	27
Hg^2+	8	83	3	25
Cu^2+	14	54	2	9
W^6+	13	56	1	4
Cd^2+	8	31	2	10
Ni^2+	10	28	3	9
Fe^3+	7	19	0	0
Mn^2+	7	32	0	0
Cu2	2	12	0	0
Rb^+	4	18	0	0
Au^+	2	13	0	0
Cs^+	6	23	0	0
Pb^2+	1	10	0	0
Fe^2+	3	7	0	0
Pt^2+	1	2	0	0
Sr^2+	1	4	0	0
Li^+	1	4	0	0
Co^2+	3	4	0	0
Pr^3+	1	3	0	0
Mo^6+	1	1	0	0

NProta: number of protein entries; Nrecb: number of protein receptors bound with ions.