ABSTRACT
Proteins from microbes are a large source of potential raw material for novel pharmaceuticals. Endophytic bacteriaassociated with algae associated have been shown to be particularly promising candidates. In a previous study, a crudeprotein extract was isolated from an endophytic Vibrio sp. strain ES25. The extract was found to have anti-microbialactivity. Despite these promising results, further work was needed to characterize both the protein and the bacteria thatproduce it. In this study, we sought to increase the activity of the previously discovered protein through pepsin digestionas well as provide sequence data to characterize the bacterial isolate. Here, we show promising evidence that thehydrolysate produced (QA1d) was found to have a promising antimicrobial as well as anticancer properties. Through theDNA sequencing, we also provide better taxonomic information on the isolate. Finally using Liquid ChromatographyMass Spectroscopy/Mass Spectroscopy (LC-MS/MS) and in silico prediction, we identify to novel peptides producedfrom the bacterial protein that were predicted to have multifunctional activity. These results shown here indicate thesepeptides are promising candidates for anticancer drug development or antibacterial agents for the food industry.