Nature Reviews Microbiology 4, 741–751 (2006)

In the above article, there was an error in the true negative (TN) values provided in Table 2 for the PSORTb and Proteome Analyst programs. This error had no impact on the article's arguments or conclusions, however the authors wish to apologise to readers for any confusion caused. The correct values are shown below.

Table 2 Comparison of the performance of available bacterial protein subcellular localization prediction methods*