1Mutations generated were gene deletions, insertion of C-terminal His6 tags, nonsense mutations, or replacement of phage gene with gfp (Replace). 2Plaques recovered from electroporation were analyzed
aTransfer to K-12 was examined using CmR–marked prophages. Average numbers of CmR colonies obtained in three or four independent experiments are shown. Standard deviations are given in parentheses. N;
