Figure 3.

Superfamily tree of PepD members in LAB. PepD that is experimentally characterized from Bifidobacterium longum NCC2705 (BLO) [52] and pepD genes from L. helveticus CNRZ32 (LHV) analyzed by microarray [32] are indicated by the red dots. Green circles represent the speciation events, while red squares represent duplication events.

Liu et al. BMC Genomics 2010 11:36   doi:10.1186/1471-2164-11-36
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