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Highlights:
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- PSORT-B examines a given protein sequence for amino acid composition, similarity to proteins of known localization, presence of a signal peptide, transmembrane alpha-helices and motifs corresponding to specific localizations.
- A probabilistic method integrates these analyses, returning a list of five possible localization sites with associated probability scores.
- The program attains a precision of 96% for Gram-positive and Gram-negative bacteria and predictive coverage comparable to other tools for whole proteome analysis.
- The proportion of proteins at each localization is remarkably consistent across species, even in species with varying proteome size.
- This dataset, the largest of its kind, is freely available, along with the PSORT-B source code
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