Journal
NUCLEIC ACIDS RESEARCH
Volume 37, Issue -, Pages D933-D937Publisher
OXFORD UNIV PRESS
DOI: 10.1093/nar/gkn823
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- Oxford University Press
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The antimicrobial peptide database (APD, http://aps.unmc.edu/AP/main.php) has been updated and expanded. It now hosts 1228 entries with 65 anticancer, 76 antiviral ( 53 anti-HIV), 327 antifungal and 944 antibacterial peptides. The second version of our database (APD2) allows users to search peptide families ( e. g. bacteriocins, cyclotides, or defensins), peptide sources ( e. g. fish, frogs or chicken), post-translationally modified peptides ( e. g. amidation, oxidation, lipidation, glycosylation or D-amino acids), and peptide binding targets ( e. g. membranes, proteins, DNA/RNA, LPS or sugars). Statistical analyses reveal that the frequently used amino acid residues (> 10%) are Ala and Gly in bacterial peptides, Cys and Gly in plant peptides, Ala, Gly and Lys in insect peptides, and Leu, Ala, Gly and Lys in amphibian peptides. Using frequently occurring residues, we demonstrate database-aided peptide design in different ways. Among the three peptides designed, GLK-19 showed a higher activity against Escherichia coli than human LL-37.
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