Fig. 1. Restriction map of the ompL gene and surrounding DNA sequences. Columns on the right hand indicate the ability of the different clones to complement for M13 resistance and to complement for dsbA mutant phenotypes (sensitivity to DTT and AP^–). The strains SR2701, SR2772 and SR1791 correspond to single Tn10 insertions at positions 495, 537 and 553, respectively.