منابع مشابه
The S-Layer Glycome—Adding to the Sugar Coat of Bacteria
The amazing repertoire of glycoconjugates present on bacterial cell surfaces includes lipopolysaccharides, capsular polysaccharides, lipooligosaccharides, exopolysaccharides, and glycoproteins. While the former are constituents of Gram-negative cells, we review here the cell surface S-layer glycoproteins of Gram-positive bacteria. S-layer glycoproteins have the unique feature of self-assembling...
متن کاملThe architecture of the murein (peptidoglycan) in gram-negative bacteria: vertical scaffold or horizontal layer(s)?
The murein (peptidoglycan) sacculus is the essential exoskeleton of all eubacteria (except Mycoplasma species and a few other species) that is needed to withstand the internal cytoplasmic turgor (osmotic) pressure (60, 78). Murein consists of oligo(GlcNAc-MurNAc) glycan strands that are crosslinked by short peptides and thus form a net-like polymeric structure that surrounds the cytoplasmic mem...
متن کاملS-layer anchoring and localization of an S-layer-associated protease in Caulobacter crescentus.
The S-layer of the gram-negative bacterium Caulobacter crescentus is composed of a single protein, RsaA, that is secreted and assembled into a hexagonal crystalline array that covers the organism. Despite the widespread occurrence of comparable bacterial S-layers, little is known about S-layer attachment to cell surfaces, especially for gram-negative organisms. Having preliminary indications th...
متن کاملConserved S-Layer-Associated Proteins Revealed by Exoproteomic Survey of S-Layer-Forming Lactobacilli.
The Lactobacillus acidophilus homology group comprises Gram-positive species that include L. acidophilus, L. helveticus, L. crispatus, L. amylovorus, L. gallinarum, L. delbrueckii subsp. bulgaricus, L. gasseri, and L. johnsonii. While these bacteria are closely related, they have varied ecological lifestyles as dairy and food fermenters, allochthonous probiotics, or autochthonous commensals of ...
متن کاملS-Layer Protein Self-Assembly
Crystalline S(urface)-layers are the most commonly observed cell surface structures in prokaryotic organisms (bacteria and archaea). S-layers are highly porous protein meshworks with unit cell sizes in the range of 3 to 30 nm, and thicknesses of ~10 nm. One of the key features of S-layer proteins is their intrinsic capability to form self-assembled mono- or double layers in solution, and at i...
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ژورنال
عنوان ژورنال: Carbohydrate Research
سال: 2008
ISSN: 0008-6215
DOI: 10.1016/j.carres.2007.12.025