Abstract
Cyanobacteria are photosynthetic oxygenic microorganisms that belong to the Bacteria domain, and possess cosmopolitan distribution on Earth. Some species produce potent toxins (e.g., microcystins, saxitoxins, cylindrospermopsins, anatoxin-a, anatoxin-a(S), among others) elaborated by an enzymatic mechanism that is parallel to the protein synthesis. In biological terms, saxitoxins (STX) ar…