Overview of the web-based user interface of the EnzymeTracker. The main menu (A) is on the left. The main panel is usually composed of a spreadsheet (B) and a panel at the bottom to display the entry selected in the spreadsheet using a more readable layout (C). Cross-references to other tables are associated with a combo box, whose content is dynamically generated after the content of the referenced table (D). Cells are automatically computed whenever possible. For example, the length of a protein sequence and its molecular weight (E). References from the literature are automatically fetched given the PubMed ID of an article (G) and jobs for nucleotide or protein sequence alignment can be submitted to NCBI's BLAST server in one click (F). A QR Code that summarizes the record is displayed (H) and may be printed on the sample container for future reference.