Fig. 6.
Two intron gains identified in Dictyostelium discoideum. a The second intron of gene DDB_G0275263 was newly gained. The source sequence is the 5′ end of the third intron of gene DDB_G0276095. b The fourth intron of gene DDB_G0273471 was newly gained. The source sequence is the 3′ end of the coding sequence and a 64 bp unannotated 3′ untranslated region of gene DDB_G0267666. Sequences upstream and downstream of the source sequences do not match the upstream and downstream exonic sequences of the novel introns, respectively. Therefore, these sequences are excluded from this figure. Abbreviations: DDB, Dictyostelium discoideum; DPU, Dictyostelium purpureum; PPA, P. pallidum; DFA, Dictyostelium fasciculatum; EHI, E. histolytica