Second-generation probes for biosynthetic intermediate capture: towards a comprehensive profiling of polyketide assembly
作者:Ina Wilkening、Silvia Gazzola、Elena Riva、James S. Parascandolo、Lijiang Song、Manuela Tosin
DOI:10.1039/c6cc04681a
日期:——
Novel chemicalprobes provide kinetic insights into polyketide assembly.
新型化学探针提供了对聚酮化合物组装的动力学见解。
Insights into 6-Methylsalicylic Acid Bio-assembly by Using Chemical Probes
作者:James S. Parascandolo、Judith Havemann、Helen K. Potter、Fanglu Huang、Elena Riva、Jack Connolly、Ina Wilkening、Lijiang Song、Peter F. Leadlay、Manuela Tosin
DOI:10.1002/anie.201509038
日期:2016.3.1
investigation of the modeltypeI iterative polyketidesynthase 6-methylsalicylic acid synthase (6-MSAS) in vivo and in vitro. From the fermentation of fungal and bacterial 6-MSAS hosts in the presence of chain termination probes, a full range of biosynthetic intermediates was isolated and characterized for the first time. Meanwhile, in vitro studies of recombinant 6-MSA synthases with both nonhydrolyzable
Chemical Probes for the Functionalization of Polyketide Intermediates
作者:Elena Riva、Ina Wilkening、Silvia Gazzola、W. M. Ariel Li、Luke Smith、Peter F. Leadlay、Manuela Tosin
DOI:10.1002/anie.201407448
日期:2014.10.27
A library of functionalizedchemicalprobes capable of reacting with ketosynthase‐bound biosynthetic intermediates was prepared and utilized to explore in vivo polyketide diversification. Fermentation of ACP mutants of S. lasaliensis in the presence of the probes generated a range of unnatural polyketide derivatives, including novel putative lasalocid A derivatives characterized by variable aryl ketone
制备了能够与酮合酶结合的生物合成中间体反应的功能化化学探针库,并用于探索体内聚酮化合物的多样化。S. lasaliensis ACP 突变体的发酵在探针存在的情况下,产生了一系列非天然聚酮化合物衍生物,包括新型推定的 lasalocid A 衍生物,其特征在于可变芳基酮部分和位于聚醚支架侧翼的线性聚酮化合物链(带有炔烃/叠氮化物手柄和氟)。通过提供关于非天然丙二酰-ACP 类似物的微生物耐受性和酶加工的直接信息,以及非天然聚酮化合物对进一步结构修饰的适应性,化学探针构成了开发新型突变合成和合成生物学的宝贵工具。
Synthetic Chain Terminators Off-Load Intermediates from a Type I Polyketide Synthase
作者:Manuela Tosin、Lorena Betancor、Elaine Stephens、W. M. Ariel Li、Jonathan B. Spencer、Peter F. Leadlay
DOI:10.1002/cbic.200900772
日期:2010.3.1
To catch and off load: Intermediate species in typeI modular polyketide biosynthesis were captured in vitro by small molecules that efficiently compete with the natural methylmalonyl extender units recruited for polyketide formation. The intermediates, which were directly off‐loaded from a whole polyketidesynthase in action and characterised by LC‐HR‐ESI‐MS, are the first of their kind and prove