We report a set of three 1.8-1.9 A resolution X-ray crystal structures of Neisseria gonorrhoeae Fbp (ferric-ion binding protein): (i) open-cleft apo-Fbp containing bound phosphate, (ii) open-cleft mono-Fe Fbp capped by nitrilotriacetate, and (iii) open-cleft trinuclear oxo-iron Fbp, the first structure of an iron-cluster adduct of a transferrin. The nine independent molecules in the unit cells ...

Eagon, R. G. (University of Georgia, Athens). Bacterial dissimilation of l-fucose and l-rhamnose. J. Bacteriol. 82:548-550. 1961.-Of 33 microorganisms screened for the ability to utilize the methylpentoses, l-fucose and l-rhamnose, 18 species utilized one or both methylpentoses. The majority of the bacterial species capable of utilizing these methylpentoses did so by isomerization of the methyl...

For the enumeration of vegetative cells and spores of Bacillus cereus in foods, a mannitol-egg yolk-phenol red-agar has been developed which exploits the failure of B. cereus to dissimilate mannitol, and the ability of most strains to produce phospholipase C. When a high degree of selectivity was required, polymyxin B sulfate in a concentration of 10 ppm appeared to be the most effective select...

The rate of oxidation of glucose by freshly harvested resting cells of P. pestis strain A-1122 was accelerated by 20 to 41 per cent in the presence of insulin. The stimulatory action was not noted when cell-free enzyme preparations were employed and was less marked after storage of cells for 3 days. Although insulin was not oxidized by the organism, the amount of oxygen consumed during the diss...

Previous studies with the wheat smut fungus, Tilletia caries, showed that this organism contains all the enzymes necessary for the operation of the pentose cycle and apparently of glycolvsis as well (Newburgh et al., 1955). Since the occurrence of a different pathway of carbohydrate catabolism or the predominance of a known pathway in the smut organism may be of importance for the control of sm...

In this study, we propose a nonlinear hybrid dynamical system to describe the concentrations of extracellular and intracellular substances in the process of bio-dissimilation of glycerol to 1,3-propanediol. An invariance principle is established for the hybrid dynamical system. At the same time, we state and prove new stability criteria for the nonlinear hybrid system. These results provide les...

Reports on the bacterial utilization of u-arabinose have shown two pathways of dissimilation. The first, reported by Cohen (l), demonstrated that Escherichia coli first isomerized n-arabinose to n-ribulose, which was then phosphorylated. A later report by Doudoroff et al. (2) showed that Pseudomonas saccharophi&a oxidized n-arabinose to n-arabonolactone, which was subsequently hydrolyzed to the...