Table 6.
List of gene coding for enzymes detected in AB4 polluted system involved in hydrocarbon degradation
| Enzyme | Enzyme function | Bit score | e value |
|---|---|---|---|
| Rieske non-heme iron oxygenase (RO) | Involved in regio- and stereoselective transformation of a wide array of aromatic hydrocarbons | 86.12 | 1.90e− 23 |
| Rieske non-heme iron oxygenase (RO), α-subunit | The catalytic domain of RO, aromatic ring-hydroxylating dioxygenases | 50.66 | 2.48e−09 |
| Vanillate O-demethylase oxygenase subunit | Catalyzes the reductive conversion of vanillate into protocatechuate and formaldehyde | 43.51 | 1.38e− 06 |
| Dicamba O-demethylase oxygenase | Catalyses the conversion of dicamba (2-methoxy-3,6-dichlorobenzoic acid) to DCSA (3,6-dichlorosalicylic acid) | 43.51 | 1.38e− 06 |
| Rieske non-heme iron oxygenase (RO), ferredoxin component of biphenyl dioxygenase (BPDO) and carbazole 1,9a-dioxygenase (CARDO) | BPDO degrades biphenyls and polychlorinated biphenyls. CARDO catalyses angular dioxygenation of carbazole at the C1 and C9a positions | 41.70 | 3.93e− 06 |
| Anthranilate 1,2-dioxygenase (AntDO) | AntDO converts anthranilate to catechol | 35.52 | 2.06e− 03 |
| Phthalate 4,5-dioxygenase (PhDO) oxygenase α-subunit | Catalyzes the dihydroxylation of phthalate to form the 4,5-dihydro-cis-dihydrodiol of phthalate (DHD) | 45.57 | 1.98e− 07 |
| 2-Oxoquinoline 8-monooxygenase (OMO) | Participate in quinoline degradation via the NADH-dependent oxidation of 2-oxoquinoline to 8-hydroxy-2-oxoquinoline | 33.93 | 2.60e− 03 |
| Phenylpropionate dioxygenase, large terminal subunit | Catalyse the Insertion of both atoms of molecular oxygen into positions 2 and 3 of the phenyl ring of phenylpropionate, yielding cis-3-(3-carboxyethyl)-3,5-cyclohexadiene-1,2-diol | 46.33 | 5.21e− 07 |
| Aldehyde dehydrogenase | Participate in alkane metabolism, Fatty acid degradation, chloroalkane and chloroalkene degradation | 77.65 | 1.57e− 18 |
| NAD(P)+-dependent benzaldehyde dehydrogenase II, p-hydroxybenzaldehyde dehydrogenase and related proteins | benzaldehyde dehydrogenase II catalyses the oxidation of benzyl alcohol to benzoate; p-hydroxybenzaldehyde dehydrogenase catalyses the oxidation of p-hydroxybenzaldehyde to p-hydroxybenzoic acid | 60.24 | 2.01e− 12 |
| Phenylacetaldehyde dehydrogenase (PADH); NahF salicylaldehyde dehydrogenase | StyD PADH involved in styrene catabolism; salicylaldehyde dehydrogenase catalyses the conversion of salicylaldehyde to salicylate | 55.91 | 7.98e− 11 |
| NAD+-dependent chloroacetaldehyde dehydrogenases (AldA and AldB) | Participate in the degradation of 1,2-dichloroethane | 51.58 | 2.48e− 09 |
| 4-Hydroxymuconic semialdehyde dehydrogenase | Involved in 4-hydroxyacetophenone degradation | 55.99 | 1.47e− 11 |
| Vanillin dehydrogenase | Oxidation of vanillin to vanillinic acid; involved in benzaldehyde, protocatechualdehyde m-anisaldehyde, and p-hydroxybenzaldehyde degradation | 54.26 | 2.64e− 10 |
| p-Hydroxybenzaldehyde dehydrogenase | Catalyses oxidation of p-hydroxybenzaldehyde to p-hydroxybenzoic acid | 49.22 | 1.68e− 08 |
| 5-Carboxymethyl-2-hydroxymuconate semialdehyde dehydrogenase | Transform 5-carboxymethyl-2-hydroxymuconate semialdehyde (CHMS) to 5-carboxymethyl-2-hydroxymuconate (CHM) (4-hydroxyphenylacetate degradation) | 49.03 | 1.93e− 08 |
| Salicylaldehyde dehydrogenase | Involved in the upper naphthalene catabolic pathway | 48.73 | 2.59e− 08 |
| 2-Hydroxymuconic semialdehyde dehydrogenase | Catalyzes the second step in meta-cleavage pathway for catechol degradation | 48.57 | 2.66e− 08 |
| 2-Carboxybenzaldehyde dehydrogenase, PhdK | Involved in phenanthrene degradation | 45.06 | 4.83e− 07 |
| Cyclohexanecarboxyl-CoA dehydrogenase | Funnel the alicyclic acid, cyclohexane carboxylate into the anaerobic benzoate degradation pathway | 38.36 | 1.53e− 04 |
| Anaerobic benzoate catabolism transcriptional regulator | Involved in anaerobic catabolism of benzoate | 43.79 | 3.83e− 06 |