نتایج جستجو برای: streptomyces avermitilis

تعداد نتایج: 13460  

Journal: :International microbiology : the official journal of the Spanish Society for Microbiology 2008
Alberto Hernández José C López Ramón Santamaría Margarita Díaz José M Fernández-Abalos José L Copa-Patiño Juan Soliveri

A DNA fragment from the lignocellulolytic actinomycete Streptomyces avermitilis CECT 3339 was cloned using a DNA probe from the xylanase gene xysA of Streptomyces halstedii. The nucleotide sequence analysis revealed two potential ORFs, xyl30 and hd30, encoding a deduced multimodular F/10 xylanase with a binding domain and a secreted glycoxyl hydrolase, respectively. In Streptomyces lividans car...

Journal: :PLoS Computational Biology 2006
Holger Jenke-Kodama Thomas Börner Elke Dittmann

Modular polyketide synthases (PKSs) of bacteria provide an enormous reservoir of natural chemical diversity. Studying natural biocombinatorics may aid in the development of concepts for experimental design of genes for the biosynthesis of new bioactive compounds. Here we address the question of how the modularity of biosynthetic enzymes and the prevalence of multiple gene clusters in Streptomyc...

2016
Di Sun Jianya Zhu Zhi Chen Jilun Li Ying Wen

Avermectins are useful anthelmintic antibiotics produced by Streptomyces avermitilis. We demonstrated that a novel AraC-family transcriptional regulator in this species, SAV742, is a global regulator that negatively controls avermectin biosynthesis and cell growth, but positively controls morphological differentiation. Deletion of its gene, sav_742, increased avermectin production and dry cell ...

Journal: :Bioscience, biotechnology, and biochemistry 2013
Sang Youn Hwang Kazunori Nakashima Naoko Okai Fumiyoshi Okazaki Michiru Miyake Koichi Harazono Chiaki Ogino Akihiko Kondo

Amylases from Streptomyces are useful in the production of maltooligosaccharides, but they have weak thermal stability at temperatures higher than 40 °C. In this study, α-amylase (SAV5981 gene of Streptomyces avermitilis) was expressed from Streptomyces lividans 1326 and purified by ammonium sulfate fractionation followed by anionic chromatography (Q-HP sepharose). The properties of the purifie...

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