Directed evolution of the nonribosomal peptide synthetase AdmK generates new andrimid derivatives in vivo.

Directed evolution of the nonribosomal peptide synthetase AdmK generates new andrimid derivatives in vivo.
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DOI:
10.1016/j.chembiol.2011.03.008
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发表时间:
2011-05-27
影响因子:
--
通讯作者:
Kelleher NL
Kelleher NL
中科院分区:
生物1区
文献类型:
--
作者:
Evans BS;Chen Y;Metcalf WW;Zhao H;Kelleher NL

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Many lead compounds in the search for new drugs derive from peptides and polyketides whose similar biosynthetic enzymes have been difficult to engineer for production of new derivatives. Problems with generating multiple analogs in a single experiment along with lack of high-throughput methods for structure-based screening have slowed progress in this area. Here, we use directed evolution and a multiplexed assay to screen a library of >14,000 members to generate three new derivatives of the antibacterial compound, andrimid. Another limiting factor in reengineering these mega-enzymes of secondary metabolism has been that commonly used hosts such as Escherichia coli often give lower product titers, so our reengineering was performed in the native producer, Pantoea agglomerans. This integrated “in vivo” approach can be extended to larger enzymes to create analogues of natural products for bioactivity testing.
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