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

Distribution of purple photosynthetic bacteria in wetland and woodland habitats of central and northern Minnesota.

Enrichment cultures for purple nonsulfur and sulfur photosynthetic bacteria were prepared from soil samples collected in central and northern Minnesota. The purple nonsulfur bacteria were found in most wetland soils sampled but were uncommon in woodland and grassland soils. The pH range of the soils in which these bacteria occurred was 3.8 to 7.8, and the oxidation-reduction potential (E(h)) ra...

Genotypic and phenotypic diversity within species of purple nonsulfur bacteria isolated from aquatic sediments.

To assess the extent of genotypic and phenotypic diversity within species of purple nonsulfur bacteria found in aquatic sediments, a total of 128 strains were directly isolated from agar plates that had been inoculated with sediment samples from Haren and De Biesbosch in The Netherlands. All isolates were initially characterized by BOX-PCR genomic DNA fingerprinting, and 60 distinct genotypes w...

A novel hopanoid, 30-(5'-adenosyl)hopane, from the purple non-sulphur bacterium Rhodopseudomonas acidophila, with possible DNA interactions.

A novel hopanoid, 30-(5'-adenosyl)hopane, was isolated from the purple non-sulphur bacterium Rhodopseudomonas acidophila and identified. The significance of this triterpenoid in terms of bacteriohopanepolyol biosynthesis, membrane reinforcement and possible interactions with nucleic acids is discussed.

The structure and function of the LH2 (B800-850) complex from the purple photosynthetic bacterium Rhodopseudomonas acidophila strain 10050.

The crystallographic structure of the B800-820 LH3 light-harvesting complex from the purple bacteria Rhodopseudomonas acidophila strain 7050.

The B800-820, or LH3, complex is a spectroscopic variant of the B800-850 LH2 peripheral light-harvesting complex. LH3 is synthesized by some species and strains of purple bacteria when growing under what are generally classed as "stressed" conditions, such as low intensity illumination and/or low temperature (<30 degrees C). The apoproteins in these complexes modify the absorption properties of...