Statistical description and findings

The current statistics are made for 123 bacteriocins, 113 secreted by Gram-positive bacteria and 10 by Gram-negative bacteria. Various bacterial species produce bacteriocins. The lactic acid bacteria (order Lactobacillales) are the predominant group of producers. Of those in our database, 86 are produced by lactic acid bacteria, two by halobacteria, six by actinobacteria, 18 by bacilli, four by clostridia and seven by proteobacteria. For 81.3%, the amino acid sequence length varies from 20 to 60 (Figure 1).

Figure 1: Histogram of the distribution of peptide length in the BACTIBASE database.