- EMBL: IEP - Tool for calculating isoelectric point from amino acid sequence, maintained by European Molecular Biology Laboratory, Heidelberg, Germany.
- HLA-DR Peptide Binding - Online tool for prediction, for a single letter sequence, including algorithm methodology from UCSF, Fresno, California.
- Molecular Clocks: Deamidation of Asparaginyl and Glutaminyl Residues in Peptides and Proteins - Review with color illustrations, tables and references to the research literature. [PDF]
- PenBase - Curated database devoted to penaeidins, offering comprehensive information about penaeidin properties, function, diversity and nomenclature.
- Peptaibol - Antibiotic peptide database and tools at Birkbeck College, UL, Bloombury, London.
- PeptideMass - Web-based tool for calculating the molecular weight of peptides by sequence, in oxidised, reduced or IAA forms, using its one-letter code, provided by ExPasy, Switzerland.
