Deltaproteobacteria. Proteobacteria delta . delta Proteobacteria . A group of PROTEOBACTERIA represented by morphologically diverse, anaerobic sulfidogens. Some members of this group are considered bacterial predators, having bacteriolytic properties. . 1.00
Betaproteobacteria. Proteobacteria beta . beta Proteobacteria . A class in the phylum PROTEOBACTERIA comprised of chemoheterotrophs and chemoautotrophs which derive nutrients from decomposition of organic material. . 0.69
Proteobacteria. Bacteria, Purple . Purple Bacteria . A phylum of bacteria consisting of the purple bacteria and their relatives which form a branch of the eubacterial tree. This group of predominantly gram-negative bacteria is classified based on homology of equivalent nucleotide sequences of 16S ribosomal RNA or by hybridization of ribosomal RNA or DNA with 16S and 23S ribosomal RNA. . 0.66
Proton-Motive Force. deltapH . Chemiosmotic Mechanism . Proton Motive Force . Proton-Motive Forces . gradient, pH . pH, delta . Chemiosmotic Mechanisms . delta pH . pH gradient . Energy that is generated by the transfer of protons or electrons across an energy-transducing membrane and that can be used for chemical, osmotic, or mechanical work. Proton-motive force can be generated by a variety of phenomena including the operation of an electron transport chain, illumination of a PURPLE MEMBRANE, and the hydrolysis of ATP by a proton ATPase. (From Singleton & Sainsbury, Dictionary of Microbiology and Molecular Biology, 2d ed, p171) . 0.62
Alphaproteobacteria. Proteobacteria alpha . alpha Proteobacteria . Rickettsiales . A class in the phylum PROTEOBACTERIA comprised mostly of two major phenotypes: purple non-sulfur bacteria and aerobic bacteriochlorophyll-containing bacteria. . 0.61
Delta. River Mouth . Triangular configuration of a section of coast open to the sea, created by the alluvial deposits at the mouth of a river, often, but not always, traversed by its branches. Example: the Nile delta. (Material V - Gunn, S.W.A. Multilingual Dictionary of Disaster Medicine and International Relief, 1990) . 0.60
Gammaproteobacteria. Proteobacteria gamma . gamma Proteobacteria . Beggiatoales . A group of the proteobacteria comprised of facultatively anaerobic and fermentative gram-negative bacteria. . 0.58