Organization of Bams30 locus in: (B.ant. Ames), B. anthracis strain Ames; (Bc ATCC 14579), B. cereus 14579; (Bc G9241), B. cereus G9241 and B. thuringiensis 97/027. The position of Bams30 primers is indicated by small black arrows; the primers localized in the NH2 terminus conserved part of the Exs H gene are indicated by small gray arrows. Tandem repeats with similarity to Bams30 are represented with striped boxes. Homologous genes are depicted using the same code.