| Status | Description | Organism | Genes | References |
|---|---|---|---|---|
| heme oxygenase | Agrobacterium albertimagni | G10FL-1475 | ||
| heme oxygenase (decyclizing) | Acidovorax avenae | GHRD-2337 | ||
| Heme oxygenase | Acinetobacter bereziniae | G11QG-957 | ||
| heme oxygenase | Acinetobacter calcoaceticus | GH86-202 | ||
| heme oxygenase | Acidobacterium capsulatum | GKF4-862 | ||
| heme oxygenase | Azorhizobium caulinodans | GJF3-2066 | ||
| heme oxygenase | Acidovorax citrulli | GI5W-2963 | ||
| Heme oxygenase | Anabaena cylindrica | G12Z9-224 | ||
| Heme oxygenase | Anabaena cylindrica | G12Z9-3663 | ||
| heme oxygenase | Alcanivorax dieselolei | GL7G-1377 |