Abstract：
:Naturally produced polybrominated diphenyl ethers (PBDEs) pervade the marine environment and structurally resemble toxic man-made brominated flame retardants. PBDEs bioaccumulate in marine animals and are likely transferred to the human food chain. However, the biogenic basis for PBDE production in one of their most prolific sources, marine sponges of the order Dysideidae, remains unidentified. Here, we report the discovery of PBDE biosynthetic gene clusters within sponge-microbiome-associated cyanobacterial endosymbionts through the use of an unbiased metagenome-mining approach. Using expression of PBDE biosynthetic genes in heterologous cyanobacterial hosts, we correlate the structural diversity of naturally produced PBDEs to modifications within PBDE biosynthetic gene clusters in multiple sponge holobionts. Our results establish the genetic and molecular foundation for the production of PBDEs in one of the most abundant natural sources of these molecules, further setting the stage for a metagenomic-based inventory of other PBDE sources in the marine environment.
journal_name
Nat Chem Bioljournal_title
Nature chemical biologyauthors
Agarwal V,Blanton JM,Podell S,Taton A,Schorn MA,Busch J,Lin Z,Schmidt EW,Jensen PR,Paul VJ,Biggs JS,Golden JW,Allen EE,Moore BSdoi
10.1038/nchembio.2330subject
Has Abstractpub_date
2017-05-01 00:00:00pages
537-543issue
5eissn
1552-4450issn
1552-4469journal_volume
13pub_type
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