Oxidative cyclization of prodigiosin by an alkylglycerol monooxygenase-like enzyme

In Pseudoalteromonas rubra, an unclustered biosynthetic gene encodes a di-iron oxygenase-like enzyme that catalyzes regiospecific C–H activation and cyclization of prodigiosin, yet is unrelated to the Rieske oxygenases that produce other cyclized prodiginines.