Disease relevance of Betaproteobacteria

• These proteins provide another pathway, in addition to the ones involving CheZ of the gamma- and beta-proteobacteria (e.g. Escherichia coli) or the alternative CheY that serves as a "phosphate sink" among the alpha-proteobacteria (e.g. Sinorhizobium meliloti), for dephosphorylating CheY-P [1].
• From 16S rDNA analysis, it was concluded that strains DA2, DA3 and DA4 were members of the Bradyrhizobium subgroup (alpha-Proteobacteria), strain DA5 clustered in the Brucella assemblage (alpha-Proteobacteria) and strain DA1 clustered in the beta-Proteobacteria [2].
• Actinobacteria and Betaproteobacteria contributed the most in the freshwater section, whereas Cytophaga-like bacteria and Alpha- and Gammaproteobacteria participated in EPS assimilation in the lower part of the estuary [3].
• In the denitrifying member of the beta-Proteobacteria Thauera aromatica, the anaerobic metabolism of aromatic acids such as benzoate or 2-aminobenzoate is initiated by the formation of the coenzyme A (CoA) thioester, benzoyl-CoA and 2-aminobenzoyl-CoA, respectively [4].
• We report the first description of the microbial community in a stream of acidic hydrothermal waters on volcanically active White Island, New Zealand, using both molecular and microbiological methods. alpha- and beta-Proteobacteria, green-sulfur bacteria, and uncultured Firmicutes were identified from the community DNA-based 16s rRNA gene library [5].

High impact information on Betaproteobacteria

• Nitrate-reducing beta-Proteobacteria were isolated on monoterpenes as sole carbon source and electron donor [6].
• When we compared genera within the most dominant group, the beta-proteobacteria, differences between unamended and cadmium-amended libraries were much larger [7].
• Instead, it appears that urease in beta-proteobacterial autotrophic ammonia oxidizers is the product of divergent evolution in the common ancestor of gamma- and beta-proteobacteria that was initiated before their divergence during speciation [8].
• On the other hand, the beta-rhizobia were grouped with free-living nitrogen-fixing beta-proteobacteria on the basis of the nifH phylogenetic tree [9].
• The intron shows a higher sequence affiliation with introns in tRNA(Ile)(CAU) and tRNA(Arg)(CCU) genes in alpha- and beta-proteobacteria, respectively, than with other cyanobacterial tRNA(Leu)(UAA) group I introns [10].

Chemical compound and disease context of Betaproteobacteria

• Recent research on microbial degradation of aromatic and other refractory compounds in anoxic waters and soils has revealed that nitrate-reducing bacteria belonging to the Betaproteobacteria contribute substantially to this process [11].
• The extremely low content of 2-hydroxyputrescine is remarkable, since this unique diamine is a common marker for beta-proteobacteria [12].
• Sterolibacterium denitrificans gen. nov., sp. nov., a novel cholesterol-oxidizing, denitrifying member of the beta-Proteobacteria [13].
• Methylibium petroleiphilum gen. nov., sp. nov., a novel methyl tert-butyl ether-degrading methylotroph of the Betaproteobacteria [14].
• The quantity of three members belonging to beta-proteobacteria accounted for 34% of total 16S rDNA copies measured from the "heavier" fraction of DNA that was contributed from the DNA of microorganisms capable of incorporating 13C-labeled naphthalene into their genetic biomarkers [15].

Gene context of Betaproteobacteria

• The proportion of elongated Alpha- and Betaproteobacteria (potential pyrene degraders) increased significantly (P<0.05) [16].
• While there is an extensive database of genes encoding ammonia monooxygenase (amo) found in the ammonia-oxidizing beta-proteobacteria, few amo sequences are available representing the gamma-proteobacteria [17].
• Whereas most betaproteobacteria have one-piece tmRNA, a permuted tmRNA gene was found for Dechloromonas aromatica and close relatives [18].

Analytical, diagnostic and therapeutic context of Betaproteobacteria

• Sequence analysis of the major bands detected indicated the predominance of the low- K(s) group of TCE/phenol-degrading bacteria belonging to beta-Proteobacteria [19].

References