Metagenomic insights into the genus <i>Geobacter</i> obtained by MEGAN analyses.

<p>(A) Sub-genus level distribution of genes affiliated with the genus <i>Geobacter</i> based on BLAST homology. ‘<i>Geobacter</i>’ in the figures represents genes that were assigned to <i>Geobacter</i> at the genus level, but not to any genome-sequenced strain. (B) A partial MEGAN tree showing taxonomic distribution of genes encoding the acetate-catabolizing enzymes acetyl-CoA synthetase (EC 6.2.1.1), phosphate acetyltransferase (2.3.1.8), and acetate kinase (2.7.2.1), assigned to the class <i>Deltaproteobacteria</i>. LCA parameters: Min score, 50; top percent, 1.0; Min support, 2.