Abstract
gam mutants of phage λ carrying long palindromes fail to form plaques on wild-type Escherichia coli but do grow on strains that are mutant in the sbcC gene. gam(+) λ carrying the same palindrome grow on both hosts and on a host deleted for the recB, C and D genes. These results suggest that the Gam protein of λ, known to interact also with E. coli's recBCD protein, can interact with the product of the sbcC gene.
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