An interbacterial DNA deaminase toxin directly mutagenizes surviving target populations.

pneumoniae isolates we sequenced, 50 of the 51 SNPs detected were C•G-to-T•A transitions, and each of these was located in the 5′-TC-3′ context preferred by DddA ( Mok et al., 2020 ), a highly significant enrichment compared to spontaneous mutation patterns (p<0.001) ( Lee et al., 2012 ).

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