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Purification and peptidase activity of a bacteriolytic extracellular enzyme from Pseudomonas aeruginosa
N Brito1, M A Falcón, A Carnicero
1Departamento de Microbiología y Biología Celular, Facultad de Biología, Universidad de La Laguna, Tenerife, Spain.
Research in Microbiology
|February 1, 1989
Abstract:
A bacteriolytic enzyme excreted by Pseudomonas aeruginosa Paks I was purified: samples were found to be homogeneous by gel filtration chromatography, ion exchange chromatography using CM-cellulose, immunoelectrophoresis, PAGE and SDS-PAGE. The molecular weight of the lytic enzyme was estimated to be 15,000-19,000. The enzyme was active on Gram-positive bacteria with glycine-containing interpeptide bridges in their murein layers. In addition, this lytic enzyme showed peptidase activity catalysing the hydrolysis of pentaglycine peptides into tri- and diglycine peptides.