Fig. 1

Comparative analysis of B. longum genomes. a Venn diagram displaying core gene families obtained by MCL clustering, and unique genes of B. longum APC/DPC strains and B. longum complete genomes. b Hierarchical clustering heatmap representing the variability of B. longum in terms of presence/absence of gene families. c Pie chart indicating the percentage of variable and core with respect to the total of gene families, resulting from the MCL clustering algorithm. APC 1461: B. longum APC 1461; APC 1462: B. longum APC 1462; APC 1464: B. longum APC 1464; APC 1465: B. longum APC 1465; APC 1466: B. longum APC 1466; APC 1468: B. longum APC 1468; APC 1472: B. longum APC 1472; APC 1473: B. longum APC 1473; APC 1476: B. longum APC 1476; APC 1477: B. longum APC 1477; APC 1478: B. longum APC 1478; APC 1480: B. longum APC 1480; APC 1482: B. longum APC 1482; APC 1503: B. longum APC 1503; APC 1504: B. longum APC 1504; BLIJ: B. longum ssp. infantis ATCC15697; BLJ: B. longum ssp. longum JDM301; BLIF: B. longum ssp. longum 157F; BBL306: B. longum ssp. longum CCUG30698; BLLJ: B. longum ssp. longum JCM1217; B8809: B. longum ssp. longum NCIMB8809; BBMN68: B. longum ssp. longum BBMN68; BL105A: B. longum ssp. longum 105A; BL2705: B. longum ssp. longum NCC2705; BLGT: B. longum ssp. longum GT15; BIL: B. longum ssp. longum F8; BLD: B. longum ssp. longum DJO10A; BLNIAS: B. longum ssp. longum KACC9156; DPC 6316: B. longum DPC 6316; DPC 6317: B. longum DPC 6317; DPC 6320: B. longum DPC 6320; DPC 6321: B. longum DPC 6321; DPC 6323: B. longum DPC 6323