Table 2.
Conserved RNA elements upstream of some B12-regulated genes
| Genome abbreviations | The start codon | Proximal downstream genes | Coding of enzyme protein |
|---|---|---|---|
| CBL biosynthesis | |||
| Propionibacterim freudenreichii (PF) | 285 | cbiB | VB12 biosynthesis protein |
| Bacillus megaterium(BI) | 266 | cbiW | VB12 biosynthesis protein |
| Mesorhizobium loti(MLO) | 233 | bluB | 5,6-dimethylbenzimidazole synthase |
| Sinorhizobium meliloti(SM) | 251 | bluB | 5,6-dimethylbenzimidazole synthase |
| Sinorhizobium meliloti(SM) | 227 | cobU | adenosylcobinamide kinase |
| Vitamin B12 transport | |||
| Escherichia coli(EC) | 248 | btuB | VB12 transporter BtuB |
| Salmonella typhimurium(SY) | 252 | btuB | VB12 transporter BtuB |
| B12-dependent or alternative metabolic pathways | |||
| Mesorhizobium loti(MLO) | 309 | metE | 5-methyltetrahydropteroyltriglutamate--homocysteine methyltransferase |