Results 111 to 120 of about 149 (148)
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Bacterial Extracellular Polysaccharides
2011Extracellular polysaccharides are as structurally and functionally diverse as the bacteria that synthesise them. They can be present in many forms, including cell-bound capsular polysaccharides, unbound "slime", and as O-antigen component of lipopolysaccharide, with an equally wide range of biological functions. These include resistance to desiccation,
Bazaka, Kateryna +3 more
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Adsorption of Bacterial Polysaccharides to Erythrocytes
Nature, 1948WE recently reported that saline extracts of smooth strains of Haemophilus influenzae (Type b) contain a substance adsorbable to erythrocytes1. Cells treated with such extracts are agglutinated by type-specific antisera. A sample of the type-specific polysaccharide, prepared by the method of Dingle and Fothergill2, absorbed from immune sera their power
E. A. North +2 more
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Function of Bacterial Polysaccharides in the Soil
Nature, 1946MOST aerobic micro-organisms such as B. subtilis, B. megatherium, Leuconostoc species, Rhizobia, etc., are capable under favourable cultural conditions of producing highly viscous polysaccharides either as heavy capsular material or as extracellular products.
M. Stacey, Pinkard Fw, W. N. Haworth
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Bacterial Polysaccharide Capsules
2010A common feature of many bacteria is the expression of a layer of extracellular polysaccharide usually organised into a discrete structure termed the capsule. The expression of a capsule results in the coating of the bacterium in a hydrated shell of high molecular weight polysaccharide molecules that mediate interactions between the bacterial cell and ...
Corbett, David +2 more
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Imaging bacterial polysaccharides by AFM [PDF]
Polymer Bulletin, 1995 Atomic force microscopy has been used to image the bacterial polysaccharides xanthan, acetan and gellan. Images were obtained under constant force conditions in a liquid cell. Drops of dilute solutions of the polysaccharides were deposited onto freshly cleaved surfaces of mica and allowed to dry in air.
B. Wells +4 more
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Components of Bacterial Polysaccharides
ChemInform, 1990AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
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1983
Publisher Summary This chapter discusses bacterial polysaccharides. The bacterial polysaccharides make up a group of polymers in which the structural variation is almost unlimited, and unusual sugars are often the components of these polymers. Some bacterial polysaccharides are commercially important and produced industrially.
Lennart Kenne, Bengt Lindberg
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Publisher Summary This chapter discusses bacterial polysaccharides. The bacterial polysaccharides make up a group of polymers in which the structural variation is almost unlimited, and unusual sugars are often the components of these polymers. Some bacterial polysaccharides are commercially important and produced industrially.
Lennart Kenne, Bengt Lindberg
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Pharmacology of pyrogenic bacterial polysaccharides
Bulletin of Experimental Biology and Medicine, 1957Certain aspects of the pharmacodynamics of bacterial pyrogenic polysaccharides were studied in this work. It was established that there is an increase of the body temperature in animals, which lasts for 6–7 hours, following parenteral administration of this preparation in the dose from 1γ per kilogram and over.
P P Saksonov, P V Vasil'ev
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Bacterial Polysaccharides, Endotoxins, and Immunomodulation
1992These studies show that at least some--though certainly not all--of the adjuvant effects of LPS and its derivatives can be attributed to its ability to eliminate the inhibitory effects of Ts which are activated during the course of a normal immune response.
Phillip J. Baker +2 more
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Biopolymers, 1978
AbstractThe optical activity of the Klebsiella capsular polysaccharides of serotypes K1, K5, K6, K8, K11, K56, and K57 has been studied in aqueous solution. Measurements of ORD in the range 185–450 nm reveal anomalous ORD with Cotton effects near λ0 = 195nm. The results are evaluated quantitatively according to hte Moffitt‐Yang and the Drude equations.
U. Elsässer-Beile +4 more
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AbstractThe optical activity of the Klebsiella capsular polysaccharides of serotypes K1, K5, K6, K8, K11, K56, and K57 has been studied in aqueous solution. Measurements of ORD in the range 185–450 nm reveal anomalous ORD with Cotton effects near λ0 = 195nm. The results are evaluated quantitatively according to hte Moffitt‐Yang and the Drude equations.
U. Elsässer-Beile +4 more
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