Ancient defensive terpene biosynthetic gene clusters in the soft corals.
Ancient defensive terpene biosynthetic gene clusters in the soft corals.
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DOI:
10.1038/s41589-022-01027-1
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发表时间:
2022-06
影响因子:
14.8
通讯作者:
Schmidt, Eric W.
中科院分区:
文献类型:
--
作者:
Scesa, Paul D.;Lin, Zhenjian;Schmidt, Eric W.
Diterpenes are the major defensive small molecules enabling soft corals to survive without a tough exterior skeleton, and until now their biosynthetic origin has remained intractable. Furthermore, biomedical application of these molecules has been hampered by lack of supply. Here, we identify and characterize coral-encoded terpene cyclase genes that produce the eunicellane precursor of eleutherobin and cembrene, representative precursors for the >2,500 terpenes found in octocorals. Related genes are found in all sequenced octocorals and form their own clade, indicating a potential ancient origin concomitant with the split between the hard and soft corals. Eleutherobin biosynthetic genes are colocalized in a single chromosomal region. This demonstrates that, like plants and microbes, animals also harbor defensive biosynthetic gene clusters, supporting a recombinational model to explain why specialized or defensive metabolites are adjacently encoded in the genome.
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