Chapter title |
Blue Native PAGE Analysis of Bacterial Secretion Complexes
|
---|---|
Chapter number | 26 |
Book title |
Bacterial Protein Secretion Systems
|
Published in |
Methods in molecular biology, July 2017
|
DOI | 10.1007/978-1-4939-7033-9_26 |
Pubmed ID | |
Book ISBNs |
978-1-4939-7031-5, 978-1-4939-7033-9
|
Authors |
Susann Zilkenat, Tobias Dietsche, Julia V. Monjarás Feria, Claudia E. Torres-Vargas, Mehari Tesfazgi Mebrhatu, Samuel Wagner |
Editors |
Laure Journet, Eric Cascales |
Abstract |
Bacterial protein secretion systems serve to translocate substrate proteins across up to three biological membranes, a task accomplished by hydrophobic, membrane-spanning macromolecular complexes. The overexpression, purification, and biochemical characterization of these complexes is often difficult, impeding progress in understanding the structure and function of these systems. Blue native (BN) polyacrylamide gel electrophoresis (PAGE) allows for the investigation of these transmembrane complexes right from their originating membranes, without the need for long preparative steps, and is amenable to the parallel characterization of a number of samples under near-native conditions. Here we present protocols for sample preparation, one-dimensional BN PAGE and two-dimensional BN/sodium dodecyl sulfate (SDS)-PAGE, as well as for downstream analysis by staining, immunoblotting, and mass spectrometry on the example of the type III secretion system encoded on Salmonella pathogenicity island 1. |
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