Fig. 6

Seed-and-extend strategy for filtering false positive identifications after peptide profiling, with minimum seed size s=3 and maximum gap size g=1. Successive peptides fragmented from (partial) protein are shown as a sequence of dots. Green dots indicate correct identifications (true positives). Red dots indicate wrong identifications (false positives). Brightness of colored dots indicates depth in the taxonomic tree: dark colors indicate highly specific LCA* (species level) and light colors indicate nonspecific LCA*. Grey dots indicate peptides without an associated LCA*