Microviridin 1777: A Toxic Chymotrypsin Inhibitor Discovered by a Metabologenomic Approach.

ABSTRACT: The toxicity of the cyanobacterium Microcystis aeruginosa EAWAG 127a was evaluated against the sensitive grazer Thamnocephalus platyurus, and the extract possessed strong activity. To investigate the compounds responsible for cytotoxicity, a series of peptides from this cyanobacterium were studied using a combined genomic and molecular networking approach. The results led to the isolation, structure elucidation, and biological evaluation of microviridin 1777, which represents the most potent chymotrypsin inhibitor characterized from this family of peptides to date. Furthermore, the biosynthetic gene clusters of microviridin, anabaenopeptin, aeruginosin, and piricyclamide were located in the producing organism, and six additional natural products were identified by tandem mass

SUBMITTER: Sieber S 

PROVIDER: S-EPMC7050427 | biostudies-literature | 2020 Feb

REPOSITORIES: biostudies-literature