Identification and Analysis of the Paulomycin Biosynthetic Gene Cluster and Titer Improvement of the Paulomycins in Streptomyces paulus NRRL 8115----中国科学院微生物研究所

科研成果

论文题目:	Identification and Analysis of the Paulomycin Biosynthetic Gene Cluster and Titer Improvement of the Paulomycins in Streptomyces paulus NRRL 8115
作者:	Jine Li, Zhoujie Xie, Min Wang, Guomin Ai, and Yihua* Chen.
联系作者:
刊物名称:	PLoS One
期:	10
卷:	3
页:	e0120542
年份:	2015
影响因子:	3.702
论文下载:	http://www.plosone.org/article/Authors/info:doi/10.1371/journal.pone.0120542
摘要:	The paulomycins are a group of glycosylated compounds featuring a unique paulic acid moiety. To locate their biosynthetic gene clusters, the genomes of two paulomycin producers, Streptomyces paulus NRRL 8115 and Streptomyces sp. YN86, were sequenced. The paulomycin biosynthetic gene clusters were defined by comparative analyses of the two genomes together with the genome of the third paulomycin producer Streptomyces albus J1074. Subsequently, the identity of the paulomycin biosynthetic gene cluster was confirmed by inactivation of two genes involved in biosynthesis of the paulomycose branched chain (pau11) and the ring A moiety (pau18) in Streptomyces paulus NRRL 8115. After determining the gene cluster boundaries, a convergent biosynthetic model was proposed for paulomycin based on the deduced functions of the pau genes. Finally, a paulomycin high-producing strain was constructed by expressing an activator-encoding gene (pau13) in S. paulus, setting the stage for future investigations.