Schematic overview of the exon/intron structure of all available genomic sequences from PPN GHF5 endoglucanase genes. Introns are considered to be homologous when they appear at exactly the same location in the amino acid alignment. Phase of the introns is shown by gray-scale boxes. Length of the introns (in bp) is given inside each box. Domains, as identified by the SMART tool (PFAM database), are represented above the genes. Exon/intron and domain length are not drawn to scale.