| rhodobaca bogoriensis gen. nov. and sp. nov., an alkaliphilic purple nonsulfur bacterium from african rift valley soda lakes. | from enrichment cultures established for purple nonsulfur bacteria using water and sediment samples from lake bogoria and crater lake, two soda lakes in the african rift valley, three strains of purple nonsulfur bacteria were isolated; strain lbb1 was studied in detail. cells of strain lbb1 were motile and spherical to rod-shaped, suggesting a relationship to rhodobacter or rhodovulum species, and the organism was capable of both phototrophic and chemotrophic growth on a wide variety of organic ... | 2000 | 10985738 |
| accumulation of unusual carotenoids in the spheroidene pathway, demethylspheroidene and demethylspheroidenone, in an alkaliphilic purple nonsulfur bacterium rhodobaca bogoriensis. | carotenoids extracted from cells of a novel alkaliphilic purple nonsulfur bacterium rhodobaca bogoriensis strain lbb1 included unusual carotenoids in the spheroidene pathway; demethylspheroidene, demethylspheroidenone, neurosporene and spheroidenone. spheroidene was present in only small amounts, and the demethyl-carotenoids demethylspheroidene and demethylspheroidenone predominated in phototrophic cultures. furthermore, the keto-carotenoids spheroidenone and demethylspheroidenone constituted ne ... | 2001 | 16228308 |
| [rhodobaca barguzinensis sp. nov., a new alkaliphilic purple nonsulfur bacterium isolated from a soda lake of the barguzin valley (buryat republic, eastern siberia)]. | a novel strain, alga-05, of alkaliphilic purple nonsulfur bacteria was isolated from sediments of a small saline (60 g/l) soda lake near lake algin (barguzin valley, buryat republic, russia). these bacteria contain bacteriochlorophyll a and carotenoids of the alternative spirilloxanthin group with predominating demethylspheroidenone. they are facultative anaerobes; their photosynthetic structures are of the vesicular type and arranged along the cell periphery. growth of this strain is possible i ... | 2008 | 18522327 |
| structure of the dimeric rc-lh1-pufx complex from rhodobaca bogoriensis investigated by electron microscopy. | electron microscopy and single-particle averaging were performed on isolated reaction centre (rc)-antenna complexes (rc-lh1-pufx complexes) of rhodobaca bogoriensis strain lbb1, with the aim of establishing the lh1 antenna conformation, and, in particular, the structural role of the pufx protein. projection maps of dimeric complexes were obtained at 13 å resolution and show the positions of the 2 × 14 lh1 α- and β-subunits. this new dimeric complex displays two open, c-shaped lh1 aggregates of 1 ... | 2012 | 23148268 |
| [comparative study of metabolism of the purple photosynthetic bacteria grown in the light and in the dark under anaerobic and aerobic conditions]. | for three species of anoxygenic phototrophic alphaproteobacteria differing in their reaction to oxygen and light, physiological characteristics (capacity for acetate assimilation, activity of the tricarboxylic acid (tca) cycle enzymes, respiration, and the properties of the oxidase systems) were studied. nonsulfur purple bacteria rhodobacter sphaeroides, rhodobaca bogoriensis, and aerobic anoxygenic phototrophic bacteria roseinatronobacter thiooxidans were the subjects of investigation. all thes ... | 2014 | 25509391 |