Puromycin A, B and C, cryptic nucleosides identified from Streptomyces alboniger NRRL B-1832 by PPtase-based activation.
Puromycin A, B and C, cryptic nucleosides identified from Streptomyces alboniger NRRL B-1832 by PPtase-based activation.
复制标题
嘌呤霉素 A、B 和 C,通过基于 PPt 酶的激活从白链霉菌 NRRL B-1832 中鉴定出的隐性核苷
DOI:
10.1016/j.synbio.2018.02.001
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发表时间:
2018-03
影响因子:
4.8
通讯作者:
Qu X
中科院分区:
文献类型:
--
作者:
Yan X;Zhang B;Tian W;Dai Q;Zheng X;Hu K;Liu X;Deng Z;Qu X
Natural product discovery is pivot for drug development, however, this endeavor is often challenged by the wide inactivation or silence of natural products biosynthetic pathways. We recently developed a highly efficient approach to activate cryptic/silenced biosynthetic pathways through augmentation of the phosphopantetheinylation of carrier proteins. By applying this approach in the Streptomyces alboniger NRRL B-1832, we herein identified three cryptic nucleosides products, including one known puromycin A and two new derivatives (puromycin B and C). The biosynthesis of these products doesn't require the involvement of carrier protein, indicating the phosphopantetheinyl transferase (PPtase) indeed plays a fundamental regulatory role in metabolites biosynthesis. These results demonstrate that the PPtase-based approach have a much broader effective scope than the previously assumed carrier protein-involving pathways, which will benefit future natural products discovery and biosynthetic studies.
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