Article révisé par les pairs
Résumé : The bacterial lyc7 mutation probably affects the same gene as the hf1 mutation described by Belfort and Wulff and promotes increased lysogenisation by lambdoid phages. The synthesis of lambdoid phage-specific proteins has been examined after infection of ultraviolet light-irradiated lyc+ and lyc7 Escherichia coli strains, and a new protein with a molecular weight of 14,000 was observed to appear during infection of the mutant but not of the wild type. This protein may be the product of the phage cII gene. © 1977.