bclA

The mycelia of bacillus anthracis spore (Bcl A) is the main structural component of the spore external wall hair hyphae and the main immunogen of the spore, which is found at the earliest and the most closely watched the spores of the outer wall protein is a kind of glue is glycoprotein, called BclA (bacillus collagen-like protein of anthracia). The outer wall of the protein is spore hair hyphae of main structure components, of which biggest characteristics is a protein sequence contains A glue the same area (collagan 1 Ike regjon, CLR), composed of several Gxx three repeat sequence of amino acids. Most GPll repeat, and has the characteristic of 21 amino acid residues (GPrr), GDTTT sequence, known as the Bcl. A repeat. Further studies have found that different strains of anthrax have different Bcl A protein lengths, and this polymorphism is caused by different number of Gxx repeat sequences in CLR.