Abstract
Mycobacteria possess a unique cell wall that mainly consists of a copolymer of peptidoglycan, arabinogalactan, and mycolic acids (1). The mycolic acids constitute the inner layer of an outer membrane with an exceptionally low fluidity (2) and permeability for hydrophilic compounds (3,4). Porins are water-filled channel proteins that mediate the transport of hydrophilic nutrients such as sugars and amino acids across the outer membrane of Gram-negative bacteria (5,6). A decade ago, channel proteins functionally similar to the porins of Gram-negative bacteria were discovered in mycobacteria (7,8).
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References
Brennan, P.J. and Nikaido, H. (1995) The envelope of mycobacteria. Annu. Rev. Biochem. 64, 29–63.
Liu, J., Rosenberg, E. Y., and Nikaido, H. (1995) Fluidity of the lipid domain of cell wall from Mycobacterium chelonae. Proc. Natl. Acad. Sci. USA 92, 11,254–11,258.
Jarlier, V. and Nikaido, H. (1990) Permeability barrier to hydrophilic solutes in Mycobacterium chelonei. J. Bacteriol. 172, 1418–1423.
Stahl, C, Kubetzko, S., Kaps, I., Seeber, S., Engelhardt, H., and Niederweis, M. (2001) MspA provides the main hydrophilic pathway through the cell wall of Mycobacterium smegmatis. Mol. Microbiol. 40, 451–464.
Nikaido, H. (1994) Porins and specific diffusion channels in bacterial outer membranes. J. Biol. Chem. 269, 3905–3908.
Koebnik, R., Locher, K. P., and van Gelder, P. (2000) Structure and function of bacterial outer membrane proteins: barrels in a nutshell. Mol. Microbiol. 37, 239–253.
Trias, J., Jarlier, V., and Benz, R. (1992) Porins in the cell wall of mycobacteria. Science 258, 1479–1481.
Trias, J. and Benz, R. (1994) Permeability of the cell wall of Mycobacterium smegmatis. Mol. Microbiol. 14, 283–290.
Niederweis, M., Ehrt, S., Heinz, C, Klöcker, U., Karosi, S., Swiderek, K. M., et al. (1999) Cloning of the mspA gene encoding a porin from Mycobacterium smegmatis. Mol. Microbiol. 33, 933–945.
Heinz, C. and Niederweis, M. (2000) Selective extraction and purification of a mycobacterial outer membrane protein. Anal. Biochem. 285, 113–120.
Hjelmeland, L.M. (1990) Solubilization of native membrane proteins. Methods Enzymol. 182, 253–264.
Welling, G.W., van der Zee, R., and Welling-Wester, S. (1987) Column liquid chromatography of integral membrane proteins. J. Chromatogr. 418, 223–243.
Schägger, H. and von Jagow, G. (1987) Tricine-sodium dodecyl sulfate-polyacrylamide gel electrophoresis for the separation of proteins in the range from 1 to 100 kDa. Anal. Biochem. 166, 368–379.
Ausubel, F.M, Brent, R., Kingston, R.E., Moore, D.D., Seidmann, J.G, Smith, J. A., et al. (1987) Current Protocols in Molecular Biology, Wiley, New York.
Morrissey, J. H. (1981) Silver stain for proteins in polyacrylamide gels: a modified procedure with enhanced uniform sensitivity. Anal. Biochem. 117, 307–310.
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© 2003 Humana Press Inc., Totowa, NJ
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Heinz, C., Roth, E., Niederweis, M. (2003). Purification of Porins from Mycobacterium smegmatis . In: Selinsky, B.S. (eds) Membrane Protein Protocols. Methods in Molecular Biology, vol 228. Humana Press. https://doi.org/10.1385/1-59259-400-X:139
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DOI: https://doi.org/10.1385/1-59259-400-X:139
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