Release ofAspergillus niger protoplasts byPenicillium purpurogenum enzymes

Musílková, M.; Fencl, Z.; Seichertová, O.

doi:10.1007/bf02869398

Cited by 7 publications

(1 citation statement)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The use of enzymes that lyse cell walls is a promising alternative to chemical disruption as a means of recovering intracellular microbial products (10,13,18,20,28,36). The ,-1,4-linkages between the N-acetylmuramic acid and N-acetylglucosamine residues of the peptidoglycan layer of bacterial gram-positive cell walls are hydrolyzed by egg white lysozyme, and this enzyme is widely used for lysis of gram-positive bacteria (26).…”

mentioning

confidence: 99%

Nature of Escherichia coli cell lysis by culture supernatants of Bacillus species

Dean

Ward

1991

Appl Environ Microbiol

View full text Add to dashboard Cite

Escherichia coli cells were found to be sensitive to lysis by the supernatants of a variety of protease-positive Bacillus species when treated at 45°C but not when treated at 37°C. Different E. coli strains manifested different lysis sensitivities when treated at 45°C. When the lysis rates of E. coli cells at various stages of growth were investigated, post-exponential-phase cells were shown to be most sensitive to lysis. The lysis rate was inversely related to cell viability, and susceptibility appeared to be at least partly due to lysis of dead E. coli cells. A close relation was observed between levels of lysis activity and proteolytic activity. A Bacillus subtilis mutant lacking alkaline and neutral protease activity failed to lyse E. coli cells. It was concluded that Bacillus proteases played a major role in the observed E. coli lysis.

show abstract

mentioning

confidence: 99%