the 325-residue Escherichia coli outer membrane protein OmpA. Immunoelectron
microscopy showed that the OmpA fragments were either located in the periplasmic space
or were associated with the outer membrane. Apparently an area between residues 154 and
180 is required for this association; all proteins missing this area were found to be
periplasmic. The nature of this association remained unknown; no membrane-protected …