Abstract:
:It is generally believed that exchange of secondary metabolite biosynthetic gene clusters (BGCs) among closely related bacteria is an important driver of BGC evolution and diversification. Applying this idea may help researchers efficiently connect many BGCs to their products and characterize the products' roles in various environments. However, existing genetic tools support only a small fraction of these efforts. Here, we present the development of chassis-independent recombinase-assisted genome engineering (CRAGE), which enables single-step integration of large, complex BGC constructs directly into the chromosomes of diverse bacteria with high accuracy and efficiency. To demonstrate the efficacy of CRAGE, we expressed three known and six previously identified but experimentally elusive non-ribosomal peptide synthetase (NRPS) and NRPS-polyketide synthase (PKS) hybrid BGCs from Photorhabdus luminescens in 25 diverse γ-Proteobacteria species. Successful activation of six BGCs identified 22 products for which diversity and yield were greater when the BGCs were expressed in strains closely related to the native strain than when they were expressed in either native or more distantly related strains. Activation of these BGCs demonstrates the feasibility of exploiting their underlying catalytic activity and plasticity, and provides evidence that systematic approaches based on CRAGE will be useful for discovering and identifying previously uncharacterized metabolites.
journal_name
Nat Microbioljournal_title
Nature microbiologyauthors
Wang G,Zhao Z,Ke J,Engel Y,Shi YM,Robinson D,Bingol K,Zhang Z,Bowen B,Louie K,Wang B,Evans R,Miyamoto Y,Cheng K,Kosina S,De Raad M,Silva L,Luhrs A,Lubbe A,Hoyt DW,Francavilla C,Otani H,Deutsch S,Washton NM,doi
10.1038/s41564-019-0573-8subject
Has Abstractpub_date
2019-12-01 00:00:00pages
2498-2510issue
12issn
2058-5276pii
10.1038/s41564-019-0573-8journal_volume
4pub_type
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