Chapter title |
Blue Native PAGE Analysis of Bacterial Secretion Complexes.
|
---|---|
Chapter number | 22 |
Book title |
Bacterial Secretion Systems
|
Published in |
Methods in molecular biology, January 2024
|
DOI | 10.1007/978-1-0716-3445-5_22 |
Pubmed ID | |
Book ISBNs |
978-1-07-163444-8, 978-1-07-163445-5
|
Authors |
Zilkenat, Susann, Kim, Eunjin, Dietsche, Tobias, Monjarás Feria, Julia V, Torres-Vargas, Claudia E, Mebrhatu, Mehari Tesfazgi, Wagner, Samuel, Monjarás Feria, Julia V., Torres-Vargas, Claudia E. |
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, thus impeding progress in understading 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 of 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/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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