- Expression in Escherichia coli K-12 of the 76,000-dalton iron-regulated outer membrane protein of Shigella flexneri confers sensitivity to cloacin DF13 in the absence of Shigella O antigen. Derbyshire, P., Baldwin, T., Stevenson, P., Griffiths, E., Roberts, M., Williams, P., Hale, T.L., Formal, S.B. Infect. Immun. (1989)









