Table 2

Comparison of different probability thresholds that were applied to the MS results

Probability
≥ 0.70
≥ 0.90
≥ 0.95
≥ 0.99
Total number of passing spectra
245724
224793
211674
179410
Peptides
31290
26840
25022
21598
Distinct peptides with protein sequence matches
29393
25754
24172
21030
Number of mapped proteins
11612
9747
9016
8134
Number of simple reduced proteins
7097
5826
5383
4845
False-positive estimate MS/MS spectra
2.4%
0.9%
0.05%
0.01%
False-positive estimate with protein sequence matches
<16%
<6%
<3%
<0.8%

Desiere et al. Genome Biology 2004 6:R9   doi:10.1186/gb-2004-6-1-r9