Bacillus Brevibacillus laterosporus (Bl) is a promising source of bacterial insecticides. The crystal-forming ability of Bl bacteria has not been established until recently. Bacterial cells of Brevibacillus laterosporus were characterized with the aid of scanning and transmission electron microscopy. The formation of protein crystals in bacteria from the first stages of nucleation in the cells up to the stage of free crystals was studied. Molecular resolution images of the crystals have been obtained and the crystal lattice parameters have been determined. In the case of entomocidal bacilli, crystalline protein toxins are formed in the cells, which lead to death of insects after absorption by the bacteria. This is the defense mechanism of these bacterial cells. In such case, the crystals perform the protective function of living organisms.


Разработка: студия Green Art