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Isolation of the Dot/Icm Type IV Secretion System Core Complex from Legionella pneumophila.

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Legionella utilizes specialized protein secretion machinery called the type IV secretion system encoded by dot/icm genes to modulate host cellular systems. We describe here the procedure to isolate the core… Click to show full abstract

Legionella utilizes specialized protein secretion machinery called the type IV secretion system encoded by dot/icm genes to modulate host cellular systems. We describe here the procedure to isolate the core complex of the Dot/Icm type IV secretion system of L. pneumophila based on detergent lysis of bacteria and ultracentrifugation. The isolated protein complex can be applied for biochemical and transmission electron microscopy analysis.

Keywords: type secretion; dot icm; secretion; secretion system

Journal Title: Methods in molecular biology
Year Published: 2019

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