Characterization of the alnumycin gene cluster reveals unusual gene products for pyran ring formation and dioxan biosynthesis
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Alnumycin is closely related to the benzoisochromanequinone (BIQ) polyketides such as actinorhodin. Exceptional structural features include differences in aglycone tailoring that result in the unique alnumycin chromophore and the existence of an unusual 4-hydr... ...
