Figure 3. Isogroup maximum open reading frame length distribution.

The distribution of the longest putative protein coding region in each Isogroup. Open reading frames are defined as translated regions that are free of stop codons. The frequency of ORFs according to length and Isogroup homology classification are shown. A classified Isogroup confers a homology match to Pfam, a selected proteome, or to the KEGG and GO databases via Annot8r. Isogroups with a maximal ORF length less than 150aa are typically shown to have no determined homology to known proteins, while those with longer ORFs, as shown in the subplot, are more frequently classified.