Predicting Subcellular Localization via Protein Motif Co-Occurrence

Table 3.

Prediction Accuracy of PSLT on an Independent Human Data Set



Independent test of PSLT on all proteins of LIFEdb data set (second-best test)

Independent test of PSLT on subset of LIFEdb proteins verified by literature (second-best test)

Concordance between LIFEdb GFP-based annotation and the literature

Sensitivitya
PPVb
Sensitivitya
PPVb
Sensitivitya
PPVb
ER 32 (57)% 47 (60)% 100 (100)% 100 (100)% 100% 38%
Golgi 25 (42)% 50 (71)% 0 (100)% 0 (0)% 75% 75%
Cytosol 44 (77)% 63 (77)% 82 (82)% 82 (82)% 64% 74%
Nucleus 85 (88)% 66 (89)% 100 (100)% 89 (94)% 84% 76%
Peroxisome 0 (0)% 100 (100)% 67 (67)% 67% 100%
Plasma memb 54 (57)% 39 (53)% 73 (82)% 100 (100)% 20% 75%
Lysosome 0 (0)% 100 (100)% 100 (100)% 0% 0%
Mitochondria 25 (33)% 43 (57)% 100 (100)% 100 (100)% 50% 40%
Extracellular 100 (100)% 33 (50)% 0% 0%
Overall accuracy 55 (72)% 87 (88)% 59%
Coverage
50 (50)%
67 (67)%

  • a Sensitivity calculated as TP/(TP + FN).

  • b PPV indicates positive predictive value (calculated as TP/[TP + FP]).

This Article

  1. Genome Res. 14: 1957-1966

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