Monobactam formation in sulfazecin by a nonribosomal peptide synthetase thioesterase.
Monobactam formation in sulfazecin by a nonribosomal peptide synthetase thioesterase.
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DOI:
10.1038/nchembio.2526
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发表时间:
2018-01
影响因子:
14.8
通讯作者:
Townsend CA
中科院分区:
文献类型:
--
作者:
Oliver RA;Li R;Townsend CA
The N-sulfonated monocyclic β-lactam ring characteristic of the monobactams confers resistance to zinc metallo-β-lactamases and affords the most effective class to combat carbapenem-resistant enterobacteria (CRE). Here we report unprecedented non-ribosomal peptide synthetase activities where an assembled tripeptide is N-sulfonated in trans prior to direct synthesis of the β-lactam ring in a non-canonical, cysteine-containing thioesterase domain. This means of azetidinone synthesis is distinct from the three others known in nature.
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