cAMP Receptor Protein Positively Regulates the Expression of Genes Involved in the Biosynthesis of Tilivalline Cytotoxin.

is a resident of the human gut. However, certain toxigenic strains exist that secrete the nonribosomal peptide tilivalline (TV) cytotoxin. TV is a pyrrolobenzodiazepine that causes antibiotic-associated hemorrhagic colitis (AAHC).

Gene Expression Profiling of Transcription Factors of under Different Environmental Conditions.

is a Gram-negative bacterium that colonizes the human gastric mucosa and causes peptic ulcers and gastric carcinoma. strain 26695 has a small genome (1.67 Mb), which codes for few known transcriptional regulators that control bacterial metabolism and virulence.