Example sentences for: alpha-proteobacteria

How can you use “alpha-proteobacteria” in a sentence? Here are some example sentences to help you improve your vocabulary:

  • MI00109.cl shows homology to a group of hypothetical proteins from alpha-proteobacteria: Sinorhizobium meliloti NP_386252 (3e-44); Novosphingobium aromaticivorans ZP_00095448 (3e-38); Mesorhizobium loti NP_107072 (5e-37).

  • For this purpose, we used five closely related genomes in the enterobacteria group: E. coli O157:H7 EDL933 [ 11 ] , E. coli O157:H7 Sakaï [ 29 ] , E. coli K12 [ 30 ] , Salmonella enterica [ 31 ] , and S. typhimurium LT2 [ 10 ] ; three closely related genomes in the alpha-proteobacteria group: Helicobacter pylori J99 [ 32 ] , H. pylori 26695 [ 33 ] , and Campylobacter jejunii [ 34 ] ; and three closely related genomes in the Streptococcus genus: S. pneumoniae R6 [ 35 ] , S. pneumoniae TIGR4 [ 36 ] , and S. pyogenes [ 12 ] . We considered as unambiguous the relationships between these bacteria because, for example, the orthologous genes of the two strains of E. coli O157:H7 are almost identical at the nucleotide level, while they show noticeable differences from E. coli K12 (data not shown).

  • The tree topology supports the findings reported above in that the sequences cluster into three distinct groups, with the cyanobacterial sequences being most closely associated with the group 3 (plant and alpha-proteobacteria) sequences.

  • Many of the alpha-proteobacteria are either plant pathogens (for example, Agrobacterium tumefaciens ) or plant commensals (for example, Sinorhizobium meliloti and Zymomonas mobilis ). The close physical association between these bacteria and plants apparently provided an opportunity for lateral transfer of the GshA gene, perhaps more than 300 million years ago.

  • Of the 1,923 COGs (clusters of orthologous groups) [ 32, 33, 34] identified in P. aeruginosa (a gamma-proteobacterium), 80% are also found in the combined group containing Mesorhizobium loti and Caulobacter crescentus (both alpha-proteobacteria).

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