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Recently, a reliable data set comprising experimentally annotated
proteins which contain (and do not contain) signal peptides has become
available . The authors exploited the information
present in the SWISSPROT data base to derive this cleaned set .
In Table 1 we report the number of sequences for each organism type
present in that data base. We also highlight the subsets of the proteins
containing the signal peptides (Positive Set) and
the complementary set (Negative Set).
Number of sequences in the data base