2012
DOI: 10.1074/jbc.m112.401026
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Bacterial Biosynthetic Gene Clusters Encoding the Anti-cancer Haterumalide Class of Molecules

Abstract: Background: Oocydin A is an anticancer haterumalide with strong antimicrobial activity against agriculturally important plant pathogenic fungi and oomycetes. Results: The oocydin A gene cluster has been identified and characterized in four plant-associated enterobacteria. Conclusion:The ooc gene cluster is organized in three transcriptional units encoding enzymes that belong to a growing class of trans-acyltransferase polyketide synthases. Significance: Oocydin A has potential agricultural, pharmacological, an… Show more

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Cited by 79 publications
(124 citation statements)
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“…This result demonstrates that OocK accepts thioesters bearing β‐keto groups and acts as a Baeyer–Villiger monooxygenase (BVMO) to generate malonyl esters. The data also suggest that for oocydin A ( 4 ), the terminal carboxylate at C19 is not derived from a malonyl starter unit as previously proposed,17 but from an oxygen insertion and ester hydrolysis event involving an extended precursor.…”
supporting
confidence: 71%
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“…This result demonstrates that OocK accepts thioesters bearing β‐keto groups and acts as a Baeyer–Villiger monooxygenase (BVMO) to generate malonyl esters. The data also suggest that for oocydin A ( 4 ), the terminal carboxylate at C19 is not derived from a malonyl starter unit as previously proposed,17 but from an oxygen insertion and ester hydrolysis event involving an extended precursor.…”
supporting
confidence: 71%
“…To predict the precursor of 4 , we analyzed the domain architecture of OocJ, which has no counterpart in the polyketide structure (Figure 4). 17 The first two modules, OocJ1–2, have the identical domain set to that found in the phormidolide PKS 22. OocJ1 exhibits an architecture that is, with variations, found in PKSs incorporating 1,3‐bisphosphoglycerate‐derived starter units 23.…”
mentioning
confidence: 99%
“…We have recently shown that the oocydin A gene cluster is present in four plant-associated bacteria belonging to the genera Serratia and Dickeya (30). The fact that the genomic context of the ooc gene cluster in three of these bacteria is different, together with the identification of sequences similar to the sequence of a bacteriophage P4 integrase bordering the cluster in one of the strains, suggests that the gene cluster was previously acquired by HGT (30).…”
Section: Discussionmentioning
confidence: 98%
“…DAPA was not added to LBA medium to allow counterselection of the E. coli donor. The site of transposon TnKRCPN1 insertion in the MAM1-resistant mutants was determined using random primed PCR following the method described previously (30).…”
Section: Methodsmentioning
confidence: 99%
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