PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 17720814-4 2007 We show that cell killing by the DNase toxin colicin E9 of E. coli HDL11, a strain in which the level of anionic phospholipid and hence inner membrane charge is regulated by isopropyl beta-D-thiogalactopyranoside induction, is critically dependent on the level of inducer, whereas this is not the case for pore-forming colicins that take the same basic route into the periplasm. Isopropyl Thiogalactoside 174-212 colicin E8 Escherichia coli 33-38 8270655-2 1993 High level of expression of a DNase activity was detected in the E. coli transformed with pDNase 5 following induction with IPTG. Isopropyl Thiogalactoside 124-128 colicin E8 Escherichia coli 30-35