Table 3.
Distribution of RNA regulatory elements for histidine metabolism in Firmicutes
| Order | Genera | Target genes | Count |
|---|---|---|---|
| T-boxes (129 genomes): | |||
| Bacillales | Listeria | hisYZ*X | 6 |
| Lactobacillales (106 genomes) | Lactobacillus, Lactococcus, Streptococcus, Enterococcus, Leuconostoc, Oenococcus, Aerococcus | his operon | 56 |
| Lactobacillus, Enterococcus, Leuconostoc, Oenococcus, Pediococcus, Weissella, Melissococcus | hisYZ*X | 77 | |
| Alloiococcus, Dolosigranulum | yuiF | 2 | |
| Eubacteriales | Alkaliphilus, Clostridioides, Filifactor, Paraclostridium Peptostreptococcus, Peptacetobacter | hisXYZ* | 7 |
| Erysipelotrichales (9 genomes) | Eubacterium, Allobaculum, S. pleomorphus, C. innoculum | his operon | 7 |
| Holdemania, Clostridium innoculum | hisXYZ* | 3 | |
| Natranaerobiales | Natranaerobius | hisC | 1 |
| TOTAL number of operons controlled by T-box(His): | 159 | ||
| RNA attenuators (17 genomes): | |||
| Bacillales | Bacillus cereus group | his operon | 6 |
| Eubacteriales | Lutispora; Peptostreptococcaceae: Acetoanaerobium, Clostridioides, Intestinibacter, Terrisporobacter | his operon | 5 |
| Erysipelotrichales | Eggerthia, Erysipelatoclostridium, Catenibacterium, Coprobacillus, [Clostridium] | his operon | 6 |
| TOTAL number of operons controlled by T-box(His): | 17 | ||
The HisZ component of histidine ABC transporter is marked with asterisk to distinguish it from eponymous enzyme