It has been reported that a polysaccharide extracted from Pseudomonas aeruginosa is depolymerized by bovine testicular hyaluronidase (Warren and Gray, 1954). In the course of studies dealing with the effect of hyaluronidase on the cell structure of the organism, it was noted that buffered suspensions of P. aeruginosa released appreciable amounts of the polysaccharide in the supernatant fluid wh...

Capsulated mutants of pneumococcus producing a capsule of soluble polysaccharide related immunologically to the C or cell wall polysaccharide of pneumococcus have been isolated from several noncapsulated variants of this organism. The capsular material of these strains reacts with antisera both to homologous strains and to noncapsulated strains of pneumococcus and with human C-reactive protein....

The cap3B gene, which is involved in the formation of the capsule of Streptococcus pneumoniae type 3, encodes a 49-kD protein that has been identified as a polysaccharide synthase. Escherichia coli cells harboring the recombinant plasmid pTBP3 (cap3B) produced pneumococcal type 3 polysaccharide, as demonstrated by immunological tests. Biochemical and cell fractionation analyses revealed that th...

For researching the function of relieving fatigue of jujube polysaccharide, this paper group, middle dose group, high dose group and physiological saline group). Each time they were respectively feed 10g 10g/L, 20g/L, 40 g/L jujube polysaccharide liquid and 15ml/(kg.d) physiological saline. This experiment lasted 20 days. Measured mice’s biochemical Indicators including blood glucose, muscle gl...

Physiological properties of homogenized and non-homogenized polysaccharide from the seeds of Plantago asiatica L., including antioxidant capacity and short-chain fatty acid (SCFA) production, were compared in this study. High pressure homogenization decreased particle size of the polysaccharide, and changed the surface topography from large flake-like structure to smaller porous chips. FT-IR sh...

Dextran, the synthetic polysaccharide produced by Leuconostoc mesenterioides from saccharose, reacts immunologically with antisera from pneumococci, some of the Sahnonella and some of the types of Streptococcus viridans (Bargen). This immunological relationship is independent of the specific antipolysaccharide antibodies of these sera, suggesting the existence of a distinct antibody produced by...

1. A relationship between the soluble specific substances of pneumococci and the blood group substance A of man can be demonstrated by the inhibition of sheep cell hemolysis by a group specific A-antiserum. However, there are quantitative differences between the various types. 2. A striking difference exists between the acetyl and the de-acetylated polysaccharide of Pneumococcus Type I: The de-...

A capsular polysaccharide from Escherichia coli K5 was previously found to have the same structure, [-(4)beta GlcA(1)----(4)alpha GlcNAc(1)-]n, as that of the non-sulphated precursor polysaccharide in heparin biosynthesis [Vann, Schmidt, Jann & Jann (1981) Eur. J. Biochem. 116, 359-364]. The K5 polysaccharide was N-deacetylated (by hydrazinolysis) and N-sulphated, and was then incubated with de...

Separation of the wound exudate from Acacia senegal (L.) Willd., "gum arabic," on a preparative Superose-6 column gave two major fractions: a high molecular weight gum arabic glycoprotein (GAGP) containing about 90% carbohydrate and a lower molecular weight heterogenous gum arabic polysaccharide fraction. Hydrogen fluoride-deglycosylation of GAGP gave a large ( approximately 400 residue) hydrox...

A teichoic acid-like O-polysaccharide was isolated by mild acid degradation of the lipopolysaccharide (LPS) of Escherichia coli O29. The O-polysaccharide and an oligosaccharide obtained by dephosphorylation of the O-polysaccharide were studied by sugar analysis along with 1H and 13C NMR spectroscopy. The following structure of the branched oligosaccharide repeating unit, containing five monosac...