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This mode of action makes myxopyronins promising molecules for the development of novel broad\u2010spectrum antibacterials. We describe the derivatization of myxopyronins by an advanced mutasynthesis approach as a first step towards this goal. Site\u2010directed mutagenesis of the biosynthetic machinery was used to block myxopyronin biosynthesis at different stages. The resulting mutants were fed with diverse precursors that mimic the biosynthetic intermediates to restore production. Mutasynthon incorporation and production of novel myxopyronin derivatives were analyzed by HPLC\u2010MS\/MS. This work sets the stage for accessing numerous myxopyronin derivatives, thus significantly expanding the chemical space of f \u03b1\u2010pyrone antibiotics.<\/jats:p>","DOI":"10.1002\/cbic.201402666","type":"journal-article","created":{"date-parts":[[2015,3,10]],"date-time":"2015-03-10T03:47:13Z","timestamp":1425959233000},"page":"946-953","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":24,"title":["Advanced Mutasynthesis Studies on the Natural \u03b1\u2010Pyrone Antibiotic Myxopyronin from <i>Myxococcus fulvus<\/i>"],"prefix":"10.1002","volume":"16","author":[{"given":"J. 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