Production of S-layer proteins by Different <i>Bacillus anthracis </i>Strains
Investigated were antigenic properties of proteins produced by <i>B. anthracis </i>strains STI (рХО1<sup>+</sup>, рХО2<sup>-</sup>), Davies (рХО1<sup>-</sup>, рХО2<sup>+</sup>), 81/1TR (рХО1<sup>-</sup>, рХО2<sup>-</sup>), eluated in void volume (fraction 1) at division of cultural filtrates (CF) on superfine sefacryle S-300. Sera to fractions 1 of <i>B. anthracis </i>STI, 81/1TR and Davies CF were shown to contain antibodies to different antigens. The proteins identified with the help of sera were referred to antigens of <i>В. anthracis </i>S-layer relaying on м.м. 94 kDa, characteristic for S-layer proteins, localization on superficial cell structure, and independence of their production from virulence plasmids.