FZB42, the producer of the ultra-narrow spectrum antibiotic plantazolicin, was reclassified in 2015 as " B . velezensis"
2.
Other bioactive RiPPs include the antibiotics cyclothiazomycin and bottromycin, the ultra-narrow spectrum antibiotic plantazolicin, and the cytotoxin patellamide A . Streptolysin S, the toxic virulence factor of " Streptococcus pyogenes ", is also a RiPP . Additionally, human thyroid hormone itself is a RiPP due to its biosynthetic origin as thyroglobulin.