Fig. 2
From: Estimating relative biomasses of organisms in microbiota using “phylopeptidomics”
Schematized correlation of the number of taxon-to-spectrum matches with the phylogenetic distance from Shigella flexneri, for a pure S. flexneri sample. Distances associated with taxa as in Fig. 1 and calculated from Ciccarelli et al. [20] are reported on the x-axis in logarithmic scale. The number of TSMs associated with taxa are reported on the y-axis in logarithmic scale. We noted a possible correlation between the number of TSMs and the distance. Two possible exponential terms for this correlation are schematized in red and green. Some eukaryotic taxa show an additional signal in relation to proteins actually in the sample (keratins, trypsin…)