| Strain | Pseudomonas stutzeri RCH2 |
| GI | 431925680 |
| Locus Tag | Psest_0477 |
| Description | hydroxymethylpyrimidine synthase |
| Strain | Pseudomonas denitrificans ATCC 13867 |
| GI | 472327623 |
| Locus Tag | H681_22310 |
| Description | phosphomethylpyrimidine synthase ThiC |
| Strain | Hahella chejuensis KCTC 2396 |
| GI | 83643046 |
| Locus Tag | HCH_00137 |
| Description | thiamine biosynthesis protein ThiC |