Fig. 1
From: Characterization of GH2 and GH42 β-galactosidases derived from bifidobacterial infant isolates
Comparative analysis of β-galactosidases in infant-derived bifidobacterial (sub)species. Heatmap showing presence (red) and absence (blue) of 18 clusters of β-galactosidase-encoding genes across the 34 bifidobacterial representatives of B. breve, B. bifidum, B. longum subsp. longum and B. longum subsp. infantis. A blue arrow highlights Cluster 15, which is present across members of all the four (sub)species, while blue, green and brown colours identify clusters observed only in B. bifidum, B. breve and B. longum species, respectively