AIR-Identifier Web-Interface. AIR-Identifier web-interface on the Bioportal, where the user can select input files (i.e. sequence alignments and tree file containing phylogenetic trees) and parameters for three types of data; i.e. nucleotides, codons, and amino acids. The sequence files can be in FASTA or PAML format, while single or multiple trees in the tree file must be in Newick format and supplied in a single file.