Read e-book online Crystalline Bacterial Cell Surface Layers PDF

By O. Kandler (auth.), Professor Dr. Uwe B. Sleytr, Dr. Paul Messner, Dr. Dietmar Pum, Dr. Margit Sára (eds.)

ISBN-10: 3642735371

ISBN-13: 9783642735370

ISBN-10: 3642735398

ISBN-13: 9783642735394

Crystalline floor layers (S-layers) symbolize a nearly common function of archaebacterial cellphone envelopes and will be present in gram-positive and gram-negative eubacterial species from approximately all phylogenetic branches. S-layers include a unmarried protein- or glycoprotein species and therefore should be regarded as essentially the most primitive membrane buildings built in the course of evolution. Prokaryotes sporting S-layers are ubiquitously present in all the things of the biosphere. This helps the idea that of a basic supramolecular "porous crystalline floor layer" pleasurable a large spectrum of services that are strongly depending on the actual environmental and ecological stipulations. Their structural simplicity makes S-layers an appropriate version for interpreting structure-function relationships in addition to dynamic elements of membrane morphogenesis.

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Can J Microbiol 31:261-267 Murray RGE (1963) On the cell wall structure of Spirillum serpens. Can J Microbiol 9:381-392 Saxton WO, Baumeister W (1986) PrinCiples of organization in S-Iayers. Mol Bioi 187:251-253 Stewart M, Murray RGE (1982) Structure of the regular surface layer of Aquaspirillum serpens MW5. J Bacteriol 150:348-357 Image Analysis of the Two Patterns from Negatively Stained A-Layers of Aeromonas salmonicida: Correction for Lattice Distortions M. J. , Cambridge CB2 2QH, ENGLAND 2Department of Microbiology, University of Guelph Guelph, CANADA N1G 2W1 There is strong evidence linking the presence of an outer cell wall layer (the A-layer) to virulence of Aeromonas sa/monicida strains (see Ishiguro et al.

Salmonicida displayed either higher or intermediate resistance to the bactericidal activity of complement both in the presence and absence of specific antibody. In normal sera, both A-protein and LPS were shown to contribute to serum resistance. In immune trout serum, the protection was conferred by Aprotein. In fact, in immune trout serum containing high levels of 46 antibody, all A strains were quickly killed, whereas there was no enhanced killing of their A+ parents. Thus the A-layer must function as a protective physical barrier to the access of the lytic complement components to the cytoplasmic membrane.

The calcium-dependent step in the in vitro assembly of the 150,000 protein appears to be in the formation of hexagonal arrays from intact units. The S-Iayer proteins of strain MW5 also contained bound calcium (Koval et al. ). However, attempts to minimize proteolytic degradation of these proteins during isolation by the presence of calcium at all stages of purification were not successful. Relatedness The biochemical relatedness of the S-Iayer proteins of strains VHA and MW5 was examined by two-dimensional peptide mapping (Koval et al.

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Crystalline Bacterial Cell Surface Layers by O. Kandler (auth.), Professor Dr. Uwe B. Sleytr, Dr. Paul Messner, Dr. Dietmar Pum, Dr. Margit Sára (eds.)

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