1887

Abstract

SUMMARY

Production of pili directed either by the sex factor F or by the drug-resistance factor R 100 in 12 is regulated by a gene which acts by producing a repressor, and the mutant R 100–1 no longer produces this repressor. The specific pilus determined by R 100–1 resembled the F pilus morphologically, but differed in its affinity for F-specific RNA phages. Mutants of F and R 100–1 which had lost the ability to synthesize pili could each restore to the other the ability to produce pili on mixed infection of the same host.

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/content/journal/micro/10.1099/00221287-49-1-89
1967-10-01
2022-08-14
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