class III extradiol ring-cleavage dioxygenase family protein may catalyze the incorporation of both atoms of molecular oxygen into substrates resulting in the cleavage of aromatic rings
The B subunit of unknown Class III extradiol dioxygenases with similarity to Protocatechuate 4, ...
1-280
0e+00
The B subunit of unknown Class III extradiol dioxygenases with similarity to Protocatechuate 4,5-dioxygenase; This subfamily is composed of proteins of unknown function with similarity to the B subunit of Protocatechuate 4,5-dioxygenase (LigAB). LigAB belongs to the class III extradiol dioxygenase family, a group of enzymes which use a non-heme Fe(II) to cleave aromatic rings between a hydroxylated carbon and an adjacent non-hydroxylated carbon. Dioxygenases play key roles in the degradation of aromatic compounds. LigAB-like enzymes are usually composed of two subunits, designated A and B, which form a tetramer composed of two copies of each subunit. This model represents the catalytic subunit, B.
Pssm-ID: 153386 [Multi-domain] Cd Length: 276 Bit Score: 504.27 E-value: 0e+00
The B subunit of unknown Class III extradiol dioxygenases with similarity to Protocatechuate 4, ...
1-280
0e+00
The B subunit of unknown Class III extradiol dioxygenases with similarity to Protocatechuate 4,5-dioxygenase; This subfamily is composed of proteins of unknown function with similarity to the B subunit of Protocatechuate 4,5-dioxygenase (LigAB). LigAB belongs to the class III extradiol dioxygenase family, a group of enzymes which use a non-heme Fe(II) to cleave aromatic rings between a hydroxylated carbon and an adjacent non-hydroxylated carbon. Dioxygenases play key roles in the degradation of aromatic compounds. LigAB-like enzymes are usually composed of two subunits, designated A and B, which form a tetramer composed of two copies of each subunit. This model represents the catalytic subunit, B.
Pssm-ID: 153386 [Multi-domain] Cd Length: 276 Bit Score: 504.27 E-value: 0e+00
Subunit B of the Class III extradiol dioxygenase, Protocatechuate 4,5-dioxygenase, which ...
1-280
3.47e-123
Subunit B of the Class III extradiol dioxygenase, Protocatechuate 4,5-dioxygenase, which catalyzes the oxidization and subsequent ring-opening of protocatechuate; Protocatechuate 4,5-dioxygenase (LigAB) catalyzes the oxidization and subsequent ring-opening of protocatechuate (or 3,4-dihydroxybenzoic acid, PCA), an intermediate in the breakdown of lignin and other compounds. Protocatechuate 4,5-dioxygenase is an aromatic ring opening dioxygenase belonging to the class III extradiol enzyme family, a group of enyzmes that cleaves aromatic rings between a hydroxylated carbon and an adjacent non-hydroxylated carbon using a non-heme Fe(II). LigAB is composed of two subunits, designated A and B, which form a tetramer composed of two copies of each subunit. The B subunit (LigB) is the catalytic subunit of LigAB.
Pssm-ID: 153376 [Multi-domain] Cd Length: 277 Bit Score: 352.85 E-value: 3.47e-123
The N-terminal domain of the Class III extradiol dioxygenase, Gallate Dioxygenase, which ...
1-280
6.45e-116
The N-terminal domain of the Class III extradiol dioxygenase, Gallate Dioxygenase, which catalyzes the oxidization and subsequent ring-opening of gallate; Gallate Dioxygenase catalyzes the oxidization and subsequent ring-opening of gallate, an intermediate in the degradation of the aromatic compound, syringate. The reaction product of gallate dioxygenase is 4-oxalomesaconate. The amino acid sequence of the N-terminal and C-terminal regions of gallate dioxygenase exhibits homology with the sequence of PCA 4,5-dioxygenase B (catalytic) and A subunits, respectively. The enzyme is estimated to be a homodimer according to the Escherichia coli enzyme. LigAB-like enzymes are usually composed of two subunits, designated A and B, which form a tetramer composed of two copies of each subunit. In this subfamily, the subunits A and B are fused to make a single polypeptide chain. The dimer interface for this subfamily may resemble the tetramer interface of classical LigAB enzymes. Gallate Dioxygenase belongs to the class III extradiol dioxygenase family, a group of enzymes which use a non-heme Fe(II) to cleave aromatic rings between a hydroxylated carbon and an adjacent non-hydroxylated carbon.
Pssm-ID: 153387 [Multi-domain] Cd Length: 277 Bit Score: 334.40 E-value: 6.45e-116
Subunit B of the Class III Extradiol dioxygenase, Protocatechuate 4,5-dioxygenase, and simlar ...
3-280
6.55e-103
Subunit B of the Class III Extradiol dioxygenase, Protocatechuate 4,5-dioxygenase, and simlar enzymes; This subfamily of class III extradiol dioxygenases consists of a number of proteins with known enzymatic activities: Protocatechuate (PCA) 4,5-dioxygenase (LigAB), 2,3-dihydroxyphenylpropionate 1,2-dioxygenase (MhpB), 3-O-Methylgallate Dioxygenase, 2-aminophenol 1,6-dioxygenase, as well as proteins without any known enzymatic activity. These proteins play essential roles in the degradation of aromatic compounds by catalyzing the incorporation of both atoms of molecular oxygen into their preferred substrates. As members of the Class III extradiol dioxygenase family, the enzymes use a non-heme Fe(II) to cleave aromatic rings between a hydroxylated carbon and an adjacent non-hydroxylated carbon. LigAB-like class III enzymes are usually composed of two subunits, designated A and B, which form a tetramer composed of two copies of each subunit. This model represents the catalytic subunit, B.
Pssm-ID: 153372 [Multi-domain] Cd Length: 271 Bit Score: 301.12 E-value: 6.55e-103
CarBb is the B subunit of the Class III Extradiol ring-cleavage dioxygenase, 2-aminophenol 1, ...
1-280
8.61e-45
CarBb is the B subunit of the Class III Extradiol ring-cleavage dioxygenase, 2-aminophenol 1,6-dioxygenase, which catalyzes the oxidization and subsequent ring-opening of 2-aminophenyl-2,3-diol; CarBb is the B subunit of 2-aminophenol 1,6-dioxygenase (CarB), which catalyzes the oxidization and subsequent ring-opening of 2-aminophenyl-2,3-diol. It is a key enzyme in the carbazole degradation pathway isolated from bacterial strains with carbazole degradation ability. The enzyme is a heterotetramer composed of two A and two B subunits. CarB belongs to the class III extradiol dioxygenase family, a group of enzymes which use a non-heme Fe(II) to cleave aromatic rings between a hydroxylated carbon and an adjacent non-hydroxylated carbon. Although the enzyme was originally isolated as a meta-cleavage enzyme for 2'-aminobiphenyl-2,3-diol involved in carbazole degradation, it has also shown high specificity for 2,3-dihydroxybiphenyl.
Pssm-ID: 153379 [Multi-domain] Cd Length: 268 Bit Score: 152.59 E-value: 8.61e-45
Subunit B of Class III Extradiol ring-cleavage dioxygenases; Dioxygenases catalyze the ...
7-279
5.95e-34
Subunit B of Class III Extradiol ring-cleavage dioxygenases; Dioxygenases catalyze the incorporation of both atoms of molecular oxygen into substrates using a variety of reaction mechanisms, resulting in the cleavage of aromatic rings. Two major groups of dioxygenases have been identified according to the cleavage site of the aromatic ring. Intradiol enzymes cleave the aromatic ring between two hydroxyl groups, whereas extradiol enzymes cleave the aromatic ring between a hydroxylated carbon and an adjacent non-hydroxylated carbon. Extradiol dioxygenases can be further divided into three classes. Class I and II enzymes are evolutionary related and show sequence similarity, with the two-domain class II enzymes evolving from the class I enzyme through gene duplication. Class III enzymes are different in sequence and structure and usually have two subunits, designated A and B. This model represents the catalytic subunit B of extradiol dioxygenase class III enzymes. Enzymes belonging to this family include Protocatechuate 4,5-dioxygenase (LigAB), 2'-aminobiphenyl-2,3-diol 1,2-dioxygenase (CarB), 4,5-DOPA Dioxygenase, 2,3-dihydroxyphenylpropionate 1,2-dioxygenase, and 3,4-dihydroxyphenylacetate (homoprotocatechuate) 2,3-dioxygenase (HPCD). There are also some family members that do not show the typical dioxygenase activity.
Pssm-ID: 153371 [Multi-domain] Cd Length: 260 Bit Score: 124.14 E-value: 5.95e-34
Subunit B of the Class III Extradiol ring-cleavage dioxygenase, 2,3-dihydroxyphenylpropionate ...
49-269
1.26e-33
Subunit B of the Class III Extradiol ring-cleavage dioxygenase, 2,3-dihydroxyphenylpropionate 1,2-dioxygenase (MhpB), which catalyzes the oxidization and subsequent ring-opening of 2,3-dihydroxyphenylpropionate; 2,3-dihydroxyphenylpropionate 1,2-dioxygenase (MhpB) catalyzes the oxidization and subsequent ring-opening of 2,3-dihydroxyphenylpropionate, yielding the product 2-hydroxy-6-oxo-nona-2,4-diene 1,9-dicarboxylate. It is an essential enzyme in the beta-phenylpropionic degradation pathway, in which beta-phenylpropionic is first hydrolyzed to produce 2,3-dihydroxyphenylpropionate. The enzyme is a member of the class III extradiol dioxygenase family, a group of enzymes which use a non-heme Fe(II) to cleave aromatic rings between a hydroxylated carbon and an adjacent non-hydroxylated carbon. LigAB-like class III enzymes are usually composed of two subunits, designated A and B, which form a tetramer composed of two copies of each subunit. This model represents the catalytic subunit, B. MhpB is likely to be a tetramer.
Pssm-ID: 153377 [Multi-domain] Cd Length: 310 Bit Score: 124.32 E-value: 1.26e-33
PydA is a Class III Extradiol ring-cleavage dioxygenase required for the degradation of ...
1-193
6.79e-27
PydA is a Class III Extradiol ring-cleavage dioxygenase required for the degradation of 3-hydroxy-4-pyridone (HP); This subfamily is composed of Rhizobium sp. PydA and similar proteins. PydA is required for the degradation of 3-hydroxy-4-pyridone (HP), an intermediate in the Leucaena toxin mimosine degradation pathway. It is a member of the class III extradiol dioxygenase family, a group of enzymes that use a non-heme Fe(II) to cleave aromatic rings between a hydroxylated carbon and an adjacent non-hydroxylated carbon. LigAB-like enzymes are usually composed of two subunits, designated A and B, which form a tetramer composed of two copies of each subunit. This model represents the catalytic subunit, B.
Pssm-ID: 153381 [Multi-domain] Cd Length: 329 Bit Score: 106.90 E-value: 6.79e-27
Subunit B of the Class III Extradiol ring-cleavage dioxygenase, 3-O-Methylgallate Dioxygenase, ...
47-251
7.31e-27
Subunit B of the Class III Extradiol ring-cleavage dioxygenase, 3-O-Methylgallate Dioxygenase, which catalyzes the oxidization and subsequent ring-opening of 3-O-Methylgallate; 3-O-Methylgallate Dioxygenase catalyzes the oxidization and subsequent ring-opening of 3-O-Methylgallate (3MGA) between carbons 2 and 3. 3-O-Methylgallate Dioxygenase is a key enzyme in the syringate degradation pathway, in which the syringate is first converted to 3-O-Methylgallate by O-demethylase. This enzyme is a member of the class III extradiol dioxygenase family, a group of enzymes which uses a non-heme Fe(II) to cleave aromatic rings between a hydroxylated carbon and an adjacent non-hydroxylated carbon. LigAB-like enzymes are usually composed of two subunits, designated A and B, which form a tetramer composed of two copies of each subunit. This model represents the catalytic subunit, B.
Pssm-ID: 153378 Cd Length: 328 Bit Score: 106.71 E-value: 7.31e-27
PhnC is a Class III Extradiol ring-cleavage dioxygenase involved in the polycyclic aromatic ...
1-251
3.93e-21
PhnC is a Class III Extradiol ring-cleavage dioxygenase involved in the polycyclic aromatic hydrocarbon (PAH) catabolic pathway; This subfamily is composed of Burkholderia sp. PhnC and similar poteins. PhnC is one of nine protein products encoded by the phn locus. These proteins are involved in the polycyclic aromatic hydrocarbon (PAH) catabolic pathway. PhnC is a member of the class III extradiol dioxygenase family, a group os enzymes which use a non-heme Fe(II) to cleave aromatic rings between a hydroxylated carbon and an adjacent non-hydroxylated carbon. LigAB-like enzymes are usually composed of two subunits, designated A and B, which form a tetramer composed of two copies of each subunit. This model represents the catalytic subunit, B.
Pssm-ID: 153380 [Multi-domain] Cd Length: 277 Bit Score: 90.30 E-value: 3.93e-21
The N-terminal domain, an extradiol dioxygenase class III subunit B-like domain, of unknown ...
124-238
2.49e-05
The N-terminal domain, an extradiol dioxygenase class III subunit B-like domain, of unknown proteins containing a C-terminal AMMECR1 domain; This subfamily is composed of uncharacterized proteins containing an N-terminal domain with similarity to the catalytic B subunit of class III extradiol dioxygenases and a C-terminal AMMECR1-like domain. This model represents the N-terminal domain. Class III extradiol dioxygenases use a non-heme Fe(II) to cleave aromatic rings between a hydroxylated carbon and an adjacent non-hydroxylated carbon, however, proteins in this subfamily do not contain a potential metal binding site and may not exhibit class III extradiol dioxygenase-like activity. The AMMECR1 protein was proposed to be a regulatory factor that is potentially involved in the development of AMME contiguous gene deletion syndrome.
Pssm-ID: 153388 [Multi-domain] Cd Length: 256 Bit Score: 44.58 E-value: 2.49e-05
Class III extradiol dioxygenases with similarity to homoprotocatechuate 2,3-dioxygenase, which ...
7-218
1.56e-04
Class III extradiol dioxygenases with similarity to homoprotocatechuate 2,3-dioxygenase, which catalyzes the key ring cleavage step in the metabolism of homoprotocatechuate; This subfamily of class III extradiol dioxygenases consists of two types of proteins with known enzymatic activities; 3,4-dihydroxyphenylacetate (homoprotocatechuate) 2,3-dioxygenase (HPCD) and 2-amino-5-chlorophenol 1,6-dioxygenase. HPCD catalyzes the key ring cleavage step in the metabolism of homoprotocatechuate (hpca), a central intermediate in the bacterial degradation of aromatic compounds. The enzyme incorporates both atoms of molecular oxygen into hpca, resulting in aromatic ring-opening to yield the product alpha-hydroxy-delta-carboxymethyl cis-muconic semialdehyde. 2-amino-5-chlorophenol 1,6-dioxygenase catalyzes the oxidization and subsequent ring-opening of 2-amino-5-chlorophenol, which is an intermediate during p-chloronitrobenzene degradation. The enzyme is probably a heterotetramer composed of two alpha and two beta subunits. Alpha and beta subunits share significant sequence similarity and both belong to this family. Like all Class III extradiol dioxygenases, these enzymes use a non-heme Fe(II) to cleave aromatic rings between a hydroxylated carbon and an adjacent non-hydroxylated carbon.
Pssm-ID: 153374 Cd Length: 272 Bit Score: 42.51 E-value: 1.56e-04
The Class III extradiol dioxygenase, homoprotocatechuate 2,3-dioxygenase, catalyzes the key ...
165-226
6.04e-03
The Class III extradiol dioxygenase, homoprotocatechuate 2,3-dioxygenase, catalyzes the key ring cleavage step in the metabolism of homoprotocatechuate; 3,4-dihydroxyphenylacetate (homoprotocatechuate) 2,3-dioxygenase (HPCD) catalyzes the key ring cleavage step in the metabolism of homoprotocatechuate (hpca), a central intermediate in the bacterial degradation of aromatic compounds. The enzyme incorporates both atoms of molecular oxygen into hpca, resulting in aromatic ring-opening to yield alpha-hydroxy-delta-carboxymethyl cis-muconic semialdehyde. HPCD is a member of the class III extradiol dioxygenase family, a group of enzymes which use a non-heme Fe(II) to cleave aromatic rings between a hydroxylated carbon and an adjacent non-hydroxylated carbon.
Pssm-ID: 153382 Cd Length: 280 Bit Score: 37.31 E-value: 6.04e-03
Database: CDSEARCH/cdd Low complexity filter: no Composition Based Adjustment: yes E-value threshold: 0.01
References:
Wang J et al. (2023), "The conserved domain database in 2023", Nucleic Acids Res.51(D)384-8.
Lu S et al. (2020), "The conserved domain database in 2020", Nucleic Acids Res.48(D)265-8.
Marchler-Bauer A et al. (2017), "CDD/SPARCLE: functional classification of proteins via subfamily domain architectures.", Nucleic Acids Res.45(D)200-3.
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