Symbiont proteome data of whiteflies

To examined the effect of the antibiotic treatment on protein expression of symbionts in the whitefly. Proteome analysis showed that 23 Hamiltonella proteins were down-regulated in Hamiltonella-cured (–HBt) compared to Hamiltonella-infected (+HBt) whiteflies (Dataset S1A,B), this data including all protein data of Bemisia tabaci and its symbionts. The resulting MS/MS data were processed using Maxquant search engine (v.1.5.2.8). The tandem mass spectra were searched against genome database of Portiera, Hamiltonella and Rickettsia in B. tabaci MEAM1 (http://www.whiteflygenomics.org/cgi-bin/bta/index.cgi) concatenated with reverse decoy database. Trypsin/P was specified as cleavage enzyme allowing up to 2 missing cleavages. The mass tolerance for precursor ions was set as 20 ppm in First search and 5 ppm in Main search, and the mass tolerance for fragment ions was set as 0.02 Da. Carbamidomethyl on Cys was specified as fixed modification and oxidation on Met was specified as variable modifications. FDR was adjusted to < 1% and minimum score for peptides was set > 40. KEGG database was used to annotate protein pathway using KEGG online service tools KAAS. Then each protein was mapped to the KEGG pathway database using KEGG online service tools KEGG mapper.