Figure 4
From: Origin of a novel protein-coding gene family with similar signal sequence in Schistosoma japonicum
Further evidence that the duplicated genes were duplicons of a single duplication source locus. Apart from the prominent flanking copies of retrotransposons observed around the putative gene duplication source locus [GenBank:CABF01020060], other two short copies of the retrotransposon (RTE_SJ) are also found within introns in the coding region. We aligned the source locus with 10 of the duplicons and observed that both the signal sequence and these two partial copies of RTE_SJ are relatively aligned at same position, further indicating that the duplicated genes could have originated from a single source locus.