Involvement of inner and outer membrane components in the transport of iron and in colicin B action in Escherichia coli.

摘要: Spheroplasts of Escherichia coli mutants were used to investigate the roles inner and outer membranes in transport iron. tonA mutants, known be defective an membrane component ferrichrome system, regained ability when converted spheroplasts. On other hand, tonB mutant was unable ferric enterochelin either whole cells or This implies that element is affected. fep also enterochelin, fell into two classes, fepA fepB. former class transported those latter did not. are across membrane, fepB probably lack facility membrane. Colicin B action on found differ from mutants.