Figure 4From: Conservation of intron and intein insertion sites: implications for life histories of parasitic genetic elementsGroup I intron location along the protein sequence (panel A) and in the structure of the DNA polymerase I (panel B). Panel A shows conservation profile of DNA polymerase I (see figure one for details). Panel B shows the structure of the DNA polymerase I (Klenow Fragment) from Escherichia coli (PDB ID: 1KLN[70]) colored according to site conservation. The arrow indicates intron insertion site, of the intron found in homologous protein in Bacillus subtilis phage SPO1, which is between Asn675 and Leu676 (space-filled model).Back to article page