» Distinguish from slime molds. The myxobacteria ("slime bacteria") are a group of bacteria that predominantly live in the soil. The myxobacteria have very large genomes, relative to other bacteria, for example 9-10 million nucleotides. Sorangium cellulosum has the largest known (as of 2008) bacterial genome, at 13.0 million nucleotides. Myxobacteria are included among the delta group of proteobacteria, a large taxon of Gram-negative forms. Myxobacteria can move actively by gliding. They typica… (More on Myxobacteria)