@article{mbs:/content/journal/micro/10.1099/00221287-19-2-419, author = "Weinberg, E. D. and Saz, A. K. and Pilgren, Elisabeth Y.", title = "Induction of Bacteriolysis by Cysteamine and Its Derivatives", journal= "Microbiology", year = "1958", volume = "19", number = "2", pages = "419-433", doi = "https://doi.org/10.1099/00221287-19-2-419", url = "https://www.microbiologyresearch.org/content/journal/micro/10.1099/00221287-19-2-419", publisher = "Microbiology Society", issn = "1465-2080", type = "Journal Article", abstract = "SUMMARY: Cysteamine and certain closely related derivatives induced lysis in a majority of 28 strains of Bacillus; cultures of all other genera tested were resistant. Forty-three additional sulphur and/or nitrogen containing compounds were unable to induce lysis. Optimum conditions for cysteamine activity included exposure of metabolizing post-log. phase organisms contained in shallow shaken layers of nutrient broth to the compound for 4–8 hr. Upon the completion of lysis, no formed cellular elements were visible by microscopy except flagella. The induction by cysteamine of a lysogenic bacteriophaxge or of an unusually large amount of an autolytic enzyme was not demonstrated.", }