Fig. 4

B. licheniformis DSM13-encoded proteins that may contribute to ulvan-derived oligo- and monosaccharide degradation and their abundance in the intracellular soluble and extracellular proteomes. The graph highlights the relative abundance of proteins within the respective sample given as abundance ranks. Abundance ranks were derived from %riBAQ values (Additional file 1: Table S6). The lowest rank corresponds to the total number of quantified proteins per sample. Blank tiles represent proteins that were not quantified. Note that the enrichment of protein fractions is not exclusive and overlaps occur, e.g., due to cell lysis or intracellular production of extracellular enzymes. Function, protein ID and suggested localization (PSORTb v3.0.2) [38] are indicated. C cytoplasmic, CM cytoplasmic membrane, E extracellular, U unknown, UHA/B ulvan hydrolysate A/B (Fig. 3a). *Adapted based on BlastP searches, Q65EX7 formerly annotated as putative oxidoreductase YuxG, Q65EY0 as putative carbohydrate kinase YulC, Q65EX9 as putative xylose isomerase