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. 2020 Aug 6;3(10):e202000847. doi: 10.26508/lsa.202000847

Figure 3. Mass spectrometry (MS)–based identification of secreted communication peptides.

Figure 3.

(A) Phr peptide fragments detected in the growth media of B. subtilis 168. Peptide fragments identified by MS are underlined, with the cumulative number of spectra detected in all tested repeats indicated (see the Materials and Methods section). Known mature communication peptides are in red (26, 45). The two most abundantly identified fragments are presented for each protein by an underline. The mature peptides which were not directly detected are inferred from the C-terminal sequence of the full peptides, presumably after processing. (B) AloP peptide fragments detected by MS. Same as (A) for AloP peptide fragments detected in the growth media of P. polymyxa ATCC 842.