Escherichia coli: Strains That Excrete an Inhibitor of Colicin B

Science  20 Jun 1969:
Vol. 164, Issue 3886, pp. 1414
DOI: 10.1126/science.164.3886.1414


Mutants exb of Escherichia coli are insensitive to colicin B and excrete into their culture media a material that inhibits colicin activity and that appears to be the bacterial lipopolysaccharide.