Overview of annotation page of T4SS database. The image provides an example of the main data page for a T4SS entry. Primary identification and annotation data appear at the top of the page with a link to the amino acid sequence as well as the corresponding T4SS cluster. This is followed by functional annotation data, which provide information by Kegg and COG, including the blast results against Kegg database. Below this are the sections containing details about the InterProScan, Gene Ontology (GO) as well as the blastp results against UniProt/Swiss-Prot database. Finally, the page shows details about the amino acid sequence topology and protein subcellular location prediction.