| Strain | Pseudomonas stutzeri RCH2 |
| GI | 431928717 |
| Locus Tag | Psest_3643 |
| Description | HIT family hydrolase, diadenosine tetraphosphate hydrolase |
| Strain | Pseudomonas denitrificans ATCC 13867 |
| GI | 472323701 |
| Locus Tag | H681_02625 |
| Description | HIT family protein |
| Strain | Hahella chejuensis KCTC 2396 |
| GI | 83643646 |
| Locus Tag | HCH_00759 |
| Description | diadenosine tetraphosphate (Ap4A) hydrolase-like protein |