The Internal Transcribed Spacer 2 Database (ITS2) includes a homology based RNA structure prediction algorithm which allows the detection and secondary structure prediction of ITS2 sequences. This resource also contains more than 25,000 pre-calculated secondary structures for currently known ITS2 sequences that can be searched and browsed via taxonomy.
The ITS2 Database holds information about sequence, structure and taxonomic classification of all internal transcribed spacer 2 (ITS2) in GenBank. ITS2 can now be searched with a modified BLAST considering both sequence and structure, enabling rapid taxon sampling. Novel sequences can be annotated using the HMM based approach and modelled according to multiple template structures. Sequences can be searched for known and newly identified motifs.