Herman Tse, Qiangshuai Gu, Kong-Hung Sze, Ivan K Chu, Richard Y-T Kao, Kam-Chung Lee, Ching-Wan Lam, Dan Yang, Sherlock Shing-Chiu Tai, Yihong Ke, Elaine Chan, Wan-Mui Chan, Jun Dai, Sze-Pui Leung, Suet-Yi Leung, Kwok-Yung Yuen
Cytotoxin-producing Klebsiella oxytoca is the causative agent of antibiotic-associated hemorrhagic colitis (AAHC). Recently, the cytotoxin associated with AAHC was identified as tilivalline, a known pentacyclic pyrrolobenzodiazepine (PBD) metabolite produced by K. oxytoca Although this assertion of tilivalline's role in AAHC is supported by evidence from animal experiments, some key aspects of this finding appear to be incompatible with toxicity mechanisms of known PBD toxins. We therefore hypothesized that K...
November 24, 2017: Journal of Biological Chemistry