Sequence logos of TA-like signals in bacteria. Sequence logo  of TA-like signals found in four bacterial genomes: (A) Streptomyces coelicolor A3(2) (Actinobacteria); (B) Deinococcus radiodurans R1 (Deinococcus-Thermus); (C) Aquifex aeolicus VF5 (Aquificae); and (D) Lactococcus lactis subsp. lactis Il1403 (Firmicutes). The height of a letter on a given position is proportional to its frequency of occurrence. A letter is shown upside-down if the frequency is lower than background.