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Figure 1 | BMC Evolutionary Biology

Figure 1

From: The distribution and evolutionary history of the PRP8 intein

Figure 1

Insertions in fungal PRP8 genes encode full-length inteins. The splicing and homing endonuclease domain motifs of ascomycete VMA inteins aligned with PRP8 inteins present in public databases. A. Alignment of the N-terminal splicing domains (blocks A and B; see InBase [62]. B. Alignment of the C-terminal splicing domains (F and G). C. An alignment of the four homing endonuclease domains (blocks C, D, E, H; see InBase) of the full-length PRP8 inteins and the active ascomycete VMA inteins. A region of variable length is indicated between blocks C and D together with the number of residues removed from the alignment. Accession numbers in the NCBI/protein database for the VMA inteins are SceVMA PXBYVA; ScarVMA, CAC86344; ZbaVMA, CAC86348.1; CtrVMA, A46080. Sequences of PRP8 inteins can be found at InBase and/or from accession data in Table 1. The taxonomic relationships of the species are also summarised in Table 1.

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