CRISPR/dCas9-mediated transcriptional improvement of the biosynthetic gene cluster for the epothilone production in Myxococcus xanthus oleh Ran Peng, Ye Wang, Wan-wan Feng, Xin-jing Yue, Jiang-he Chen, Xiao-zhuang Hu, Zhi-feng Li, Duo-hong Sheng, You-ming Zhang, Yue-zhong Li