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Southern blotting of genomic DNA of S. coelicolor (S. coe.), S. spheroides (S. sph.), S. rishiriensis (S. ris.), and S. roseochromogenes (S. ros.). Genomic DNA was digested with BamHI (Ba), PstI (Ps), and PvuII (Pv). gyrBR (A) and parYR (B) from S. rishiriensis were used as hybridization probes (see Materials and Methods). In blot B, S. rishiriensis DNA digested with PvuII showed two bands at 4.1 and 4.3 kb, which are not clearly resolved in this figure.
