Inverted repeats in the DNA of Streptomyces plasmids pMG110 and pMG120

Two cryptic plasmids pMG110 (10.5 kb) and pMG120 (14.5 kb) isolated from Streptomyces luteolutescens were cleaved by restriction endonucleases BglII, KpnI, and SalGI. A physical map was constructed for pMG110. After denaturation and intrastrand reannealing, two types of snap-back structures were identified by electron microscopy, differing in the size of… (More)