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. Author manuscript; available in PMC: 2013 May 4.
Published in final edited form as: J Proteome Res. 2012 Apr 9;11(5):2982–2995. doi: 10.1021/pr3000688

Table 2.

Performance of Various MIEC-SVM Models for the SH3 Class-I Binding Peptidesa

model MIECsb SEtrain (%) SPtrain (%) SEtest (%) SPtest (%) Q+ (%) Q+ (%) C
SH3-peptide MIECs
1 ΔEvdw, ΔEele 78.2 89.5 71.7 89.1 30.3 98.0 0.415
2 ΔEpolarc, ΔEnonpolarc 72.2 89.5 66.6 89.2 28.9 97.6 0.385
3 ΔEvdwEele, ΔGGB 79.3 89.1 73.4 88.8 30.1 98.1 0.419
4 ΔEvdwEeleGGB, ΔGSA 80.3 89.7 74.2 89.4 31.6 98.1 0.435
SH3-peptide MIECs and SH3 residue–residue MIECs
5 ΔEvdw, ΔEele 85.0 91.2 79.7 90.9 36.6 98.5 0.498
6 ΔEpolar, ΔEnonpolar 85.7 90.5 80.2 90.2 35.1 98.6 0.487
7 ΔEvdw, ΔEele, ΔGGB 90.8 91.2 86.3 90.9 38.3 99.0 0.537
8 ΔEvdw, ΔEele, ΔGGB, ΔGSA 92.1 91.7 87.9 91.3 40.1 99.1 0.558
SH3-peptide MIECs, SH3 residue–residue MIECs and peptide residue internal energies
9 ΔEvdw, ΔEele 90.5 93.6 85.7 93.3 45.7 99.0 0.595
10 ΔEpolar, ΔEnonpolar 89.8 93.7 84.7 93.3 45.6 98.9 0.589
11 ΔEvdw, ΔEele, ΔGGB 93.2 94.1 89.2 93.8 48.6 99.2 0.630
12 ΔEvdw, ΔEele, ΔGGB, ΔGSA 94.1 94.8 90.4 94.5 51.9 99.3 0.659
a

RBF kernel was used in SVM.

b

ΔEvdw, ΔEele, ΔGGB, ΔGSA are van der Waals, electrostatic, polar contribution to desolvation, and nonpolar contribution to desolvation, respectively.

c

ΔGpolar = ΔEele + ΔGGB, ΔGnonpolar = ΔEvdw + ΔGSA.