HLA-DR Peptide Binding
- Online tool for prediction, for a single letter sequence, including algorithm methodology from UCSF, Fresno, California.
- http://www.fresno.ucsf.edu/hladr/

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.
- http://www.expasy.org/tools/peptide-mass.html

PenBase
- Curated database devoted to penaeidins, offering comprehensive information about penaeidin properties, function, diversity and nomenclature.
- http://www.penbase.immunaqua.com/

Molecular Clocks: Deamidation of Asparaginyl and Glutaminyl Residues in Peptides and Proteins
- Review with color illustrations, tables and references to the research literature.
- http://www.deamidation.org/

EMBL: IEP
- Tool for calculating isoelectric point from amino acid sequence, maintained by European Molecular Biology Laboratory, Heidelberg, Germany.
- http://www.embl-heidelberg.de/cgi/pi-wrapper.pl

Peptaibol
- Antibiotic peptide database and tools at Birkbeck College, UL, Bloombury, London.
- http://www.cryst.bbk.ac.uk/peptaibol/