[Effect of the proteolytic enzymes of Bacillus licheniformis and the lysoamidase of Lysobacter sp. XL1 on Proteus vulgaris and Proteus mirabilis].

Preparations of culture liquid of three Bacullus licheniformis strains (S, 103, and 60.4) and the enzymatic preparation lysoamidase from culture liquid of Lysobacter sp. strain XL1 actively lysed preliminarily autoclaved cells of gram-negative bacteria Proteus vulgaris and P. mirabilis. Living Proteus cells treated with these enzymatic preparations were lysed during their subsequent autoclaving. Inoculation of enzyme-treated Proteus cells, taken either separately or in combination with one another and polymyxin B, into a rich medium led to cell repair and restoration of viability of culture.