Novel Erythromycins from a Recombinant Saccharopolyspora erythraea Strain NRRL 2338 pIG1. I. Fermentation, Isolation and Biological Activity.
作者:MICHAEL S. PACEY、JOHN P. DIRLAM、RODERICK W. GELDART、PETER F. LEADLAY、HAMISH A. I. MCARTHUR、ELLEN L. MCCORMICK、ROBERT A. MONDAY、THOMAS N. O'CONNELL、JAMES STAUNTON、TOBY J. WINCHESTER
DOI:10.7164/antibiotics.51.1029
日期:——
In a previous report, a plasmid, pIG1, which contained the loading domain from the Streptomyces avermitilis polyketide synthase (PKS), promoters from Streptomyces coelicolor and the DEBS1-TE truncated PKS from Saccharopolyspora erythraea, was integrated into the S. erythraea chromosome, effectively replacing the natural erythromycin loading domain with the avermectin loading domain. In this paper, we report the feeding of short-chained fatty acids to this recombinant strain, and its parent, NRRL 2338. Both strains incorporated exogenously supplied fatty acids to produce novel, biologically active, C-13 substituted erythromycins.
在先前的报告中,一个名为pIG1的质粒被整合到Saccharopolyspora erythraea(S. erythraea)的染色体中,该质粒含有来自Streptomyces avermitilis的多酮合酶(PKS)的加载域、来自Streptomyces coelicolor的启动子以及来自S. erythraea的DEBS1-TE截短型PKS。这一整合操作有效地将天然的红霉素加载域替换为阿维菌素加载域。在本篇论文中,我们报告了向这种重组菌株及其亲本菌株NRRL 2338饲喂短链脂肪酸的研究,结果显示,两种菌株均能利用外源提供的脂肪酸生产新型、具有生物活性的C-13位取代红霉素。