FIG. 2.

(A) Conservation of genetic organization of the bldC region between S. coelicolor, S. avermitilis, and T. fusca. The positions of protein- encoding genes and tRNA genes are indicated by arrows, and restriction sites referred to in the text are marked. Equivalent shading of arrows indicates homology. The extent of the pIJ6833 and pIJ6836 subclones described in the text is shown above the S. coelicolor map. (B) Scanning electron micrographs showing the developmental phenotype of J660 (bldC18) and its complementation by bldC carried on pIJ6836. Strains were grown on R2YE plates.