tokens: To investigate regulatory networks in Legionella pneumophila , the gene encoding the homolog of the Escherichia coli stress and stationary-phase sigma factor RpoS was identified by complementation of an E . coli rpoS mutation .
folded_tokens: to investigate regulatory networks in legionella pneumophila , the gene encoding the homolog of the escherichia coli stress and stationary-phase sigma factor rpos was identified by complementation of an e . coli rpos mutation .
labels: O O O O O B-mono_cell I-mono_cell O O O O O O O O B-mono_cell I-mono_cell O O O O O B-protein_molecule O O O O O O B-mono_cell I-mono_cell I-mono_cell B-DNA_domain_or_region O O