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plasmid SOS inhibition protein A
This family consists of several Enterobacterial PsiA proteins. The function of PsiA is unknown although it is thought that it may affect the generation of an SOS signal in Escherichia coli [1]. [1]. 3526338. An inhibitor of SOS induction, specified by a plasmid locus in Escherichia coli. Bagdasarian M, Bailone A, Bagdasarian MM, Manning PA, Lurz R, Timmis KN, Devoret R;. Proc Natl Acad Sci U S A 1986;83:5723-5726. (from Pfam)
plasmid SOS inhibition protein A PsiA is encoded on the plasmidic SOS-inhibition (psi) region, which inhibits the generation of a signal to induce SOS genes; the precise role of PsiA has yet to be determined
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