The Antimicrobial Peptide Database (APD) contains 3196 antimicrobial peptides from six kingdoms (356 bacteriocins/peptide antibiotics from bacteria, 5 from archaea, 8 from protists, 20 from fungi, 352 from plants, and 2374 from animals, including some synthetic peptides) with the following activity:
Antibacterial peptides; Antibiofilm peptides;
This comprehensive database for antimicrobial peptides is manually curated based on a set of data-collection criteria.
There are 140 human host defense peptides, 313 from mammals annotated, 1093 active peptides from amphibians (1015 from frogs and 72 from toads), 135 fish peptides, 45 reptile peptides, 42 from birds, 570 from arthropods, [318 from insects, 69 from crustaceans, 7 from myriapods, 174 from chelicerata, (43 from spiders, 88 from scorpions)], 47 from molluscs, 6 AMPs from protozoa, and more.
Anti-MRSA peptides; Anti-TB peptidesNew;
Anti-endotoxin peptidesNew; Anti-toxin peptides;
Antiviral peptides; Anti-HIV peptides;
Antiparasitic peptides; Antimalarial peptides;
Anticancer peptides; Anti-diabetic peptidesNew;
Wound healing peptides;
Chemotactic peptides; Anti-inflammatory peptides
Ion channel inhibitors; Protease inhibitors;
Antioxidant peptides; and Surface immobilized peptides.
Of the 437 unique NMR/X-ray diffracted 3D structures annotated for host defense peptides in the APD, 306 with coordinates deposited in the Protein Data Bank (PDB) can be directly rotated, zoomed, and viewed. Top left: Amphibian α-helical magainin II; Top right: bovine β-sheet lactoferricin; Bottom left: plant αβ-PsD1; Bottom right: bovine non-αβ indolicidin.
This original database consists of a pipeline of search functions for innate immune peptides. You can search for peptide information using APD ID, peptide name, amino acid sequence, peptide motif, chemical modification, length, charge, hydrophobic content, PDB ID, 3D structure, methods for structural determination, peptide source organism, peptide family name, life domain/kingdom (bacteria, archaea, protists, fungi, plants, animals), biological activity (see the links above), synergistic effects, target microbes, molecular targets, mechanism of action, contributing authors, and year of publication.
 Wang, G., Li, X. and Wang, Z. (2016) APD3: the antimicrobial peptide database as a tool for research and education.
Nucleic Acids Research 44, D1087-D1093. Paper PDF
 Wang, G., Li, X. and Wang, Z. (2009) APD2: the updated antimicrobial peptide database and its application in peptide design.
Nucleic Acids Research 37, D933-D937. Paper PDF
 Wang, Z. and Wang, G. (2004) APD: the antimicrobial peptide database.
Nucleic Acids Research 32, D590-D592. Paper PDF