2005, PrionDB.
This phylogenetic tree was automatically calculated by WHAT IF based on a neighbor-joining algorithm. The accession codes (first column to the right of the tree) are hyperlinked to the database cross-reference tables while the file names (in case of SwissProt files, the SwissProt identifiers are used) (2nd column) link to the sequence entries. The third column contains the gene names (if known). The fourth column lists the description record from the sequence file, or similar information if no description record is available in the sequence file.