Table 1.

Host ranges of phages ΦK1E, ΦK5, ΦK1-5, ΦK1-5(K1 ), and ΦK1-5(K5 ) a

E. coli strainK antigenΦK1-5ΦK1EΦK5ΦK1-5(K1)ΦK1-5(K5)
ATCC 23503K1+++
ATCC 23511K1+++
RS164K1+++
RS166K1+++
RS167K1+++
RS168K1+++
RS176K1+++
RS179K1+++
RS180K1+++
RS188K1+++
RS203K1+++
RS215K1+++
RS218K1+++
RS228K1+++
ATCC 23506K5+++
ATCC 23508K5+++
20026K5+++
21195K5+++
21386K5+++
21786K5+++
21795K5+++
21831K5+++
21832K5+++
21834K5+++
21835K5+++
  • a Plaque assays were done to determine host ranges of the phages against a collection of K1 and K5 strains ofE. coli. ΦK1E grows only on K1 strains, ΦK5 grows only on ΦK5 strains, and ΦK1-5 grows on both. ΦK1-5(K1) and ΦK1-5(K5 ) are mutants of ΦK1-5 defective in growth on K1 and K5 strains, respectively.