Purification and partial characterization of an antimicrobial peptide produced by Bacillus sp. strain P45, a bacterium from the Amazon basin fish Piaractus mesopotamicus - Sirtori, Lisana R; Cladera-Olivera, Florencia; Lorenzini, Daniel Macedo; Tsai, Siu Mui; Brandelli, Adriano (The Journal of General and Applied Microbiology, 2006)