Hydrogen metabolism by Rhodomicrobium vannielii.

cosamine in the Peptidoglycan of the Budding Phototrophic Rhodomicrobium vannielii

Carotenoids of Rhodomicrobium Vannielii.

The relationship of the anaerobic, photoheterotrophic bacterium Rhodomicrobium vannielii to other photosynthetic bacteria is difficult to assess in view of its complex morphological characteristics (Duchow and Douglas, J. Bacteriol. 58: 409, 1949). A detailed examination of its carotenoid constitution was carried out to establish more clearly its relationship to other photosynthetic bacteria. A...

Partial Lack of N-Acetyl Substitution of Glucosamine in the Peptidoglycan of the Budding Phototrophic Rhodomicrobium vannielii

The rigid layer and peptidoglycan fractions from two strains (ATCC 17100 and Rm 5) of the budding phototrophic Rhodomicrobium vannielii were isolated. Rigid layers of both strains con­ tain protein in addition to peptidoglycan. They were free of polysaccharides and fatty acids. The respective peptidoglycan fractions contain glucosamine, muramic acid, l and D-alanine, D-glutamic and m eso-diamin...

Rhodopseudomonas acidophila, sp. n., a new species of the budding purple nonsulfur bacteria.

A succinate-mineral salts medium of pH 5.2 provided selective enrichment conditions for Rhodomicrobium vannielii and for a new species belonging to the Athiorhodaceae, described herein as Rhodopseudomonas acidophila. Seven strains of the new species have been isolated from different sources in the United States and Germany. The cells are rod-shaped or ovoid, 1.0 to 1.3 mum wide and 2 to 5 mum l...

Nitrite Inhibition of Bacterial Dinitrogen Fixation

Bacterial Nitrogenase, Nitrite Inhibition, Dinitrogenase Reductase Dinitrogen fixation by crude extracts from Rhodopseudomonas palustris and Rhodomicrobium vannielii and by purified nitrogenase preparations from Azotobacter vinelandii and Clostridium pasteurianum is inhibited by nitrite, whereas in the same preparations nitrate is without effect. In Clostridium nitrite seems to interact with di...