RqlH and RqlI homologs are found across various genera, either alone or together.

F11 RqlH and RqlI homologs were found using blastp and tblastn searches of various NCBI sequence databases. (A-E) Distribution of strains containing only a homolog of RqlI (green), only RqlH (red), or both RqlH and RqlI (blue). The numbers of bacterial strains that are associated with each pie section are indicated, with totals given beneath each graph. Included are (A) distributions of RqlH and RqlI orthologs in all strains, (B) among Gram-negative bacteria, (C) among Gram-positive organisms, (D) within the Escherichia genus, or (E) as part of the Streptomyces genus. (F) Examples showing the arrangements of rqlH and rqlI orthologs in different bacterial species.