sulfite reductase, subunit A; Members of this protein family include the A subunit, one of ...
232-566
5.22e-127
sulfite reductase, subunit A; Members of this protein family include the A subunit, one of three subunits, of the anaerobic sulfite reductase of Salmonella, and close homologs from various Clostridum species, where the three-gene neighborhood is preserved. Two such gene clusters are found in Clostridium perfringens, but it may be that these sets of genes correspond to the distinct assimilatory and dissimilatory forms as seen in Clostridium pasteurianum. Note that any one of these enzymes may have secondary substates such as NH2OH, SeO3(2-), and SO3(2-). Heterologous expression of the anaerobic sulfite reductase of Salmonella confers on Escherichia coli the ability to produce hydrogen sulfide gas from sulfite. [Central intermediary metabolism, Sulfur metabolism]
The actual alignment was detected with superfamily member TIGR02910:
Pssm-ID: 478536 Cd Length: 334 Bit Score: 376.09 E-value: 5.22e-127
sulfite reductase, subunit A; Members of this protein family include the A subunit, one of ...
232-566
5.22e-127
sulfite reductase, subunit A; Members of this protein family include the A subunit, one of three subunits, of the anaerobic sulfite reductase of Salmonella, and close homologs from various Clostridum species, where the three-gene neighborhood is preserved. Two such gene clusters are found in Clostridium perfringens, but it may be that these sets of genes correspond to the distinct assimilatory and dissimilatory forms as seen in Clostridium pasteurianum. Note that any one of these enzymes may have secondary substates such as NH2OH, SeO3(2-), and SO3(2-). Heterologous expression of the anaerobic sulfite reductase of Salmonella confers on Escherichia coli the ability to produce hydrogen sulfide gas from sulfite. [Central intermediary metabolism, Sulfur metabolism]
Pssm-ID: 131956 Cd Length: 334 Bit Score: 376.09 E-value: 5.22e-127
Nitrate reductase delta subunit; This family is the delta subunit of the nitrate reductase ...
54-185
1.36e-28
Nitrate reductase delta subunit; This family is the delta subunit of the nitrate reductase enzyme, The delta subunit is not part of the nitrate reductase enzyme but is most likely needed for assembly of the multi-subunit enzyme complex. In the absence of the delta subunit the core alpha beta enzyme complex is unstable. The delta subunit is essential for enzyme activity in vivo and in vitro. The nitrate reductase enzyme, EC:1.7.99.4 catalyze the conversion of nitrite to nitrate via the reduction of an acceptor. The nitrate reductase enzyme is composed of three subunits. Nitrate is the most widely used alternative electron acceptor after oxygen. This family also now contains the family TorD, a family of cytoplasmic chaperone proteins; like many prokaryotic molybdoenzymes, the TMAO reductase (TorA) of Escherichia coli requires the insertion of a bis(molybdopterin guanine dinucleotide) molybdenum (bis(MGD)Mo) cofactor in its catalytic site to be active and translocated to the periplasm. The TorD chaperone increases apoTorA activation up to four-fold, allowing maturation of most of the apoprotein. Therefore TorD is involved in the first step of TorA maturation to make it competent to receive the cofactor.
Pssm-ID: 460619 [Multi-domain] Cd Length: 135 Bit Score: 110.55 E-value: 1.36e-28
DMSO reductase family type II enzyme chaperone; Type II members of the DMSO reductase family ...
100-211
1.52e-08
DMSO reductase family type II enzyme chaperone; Type II members of the DMSO reductase family are heterotrimeric proteins with bis(molybdopterin guanine dinucleotide)Mo, iron-sulfur, and heme b prosthetic groups bound by the alpha, beta, and gamma subunits respectively. Members of this protein family are not part of the mature protein, although they are the product of a fourth clustered gene. Proteins in this family are interpreted as a chaperone, analogous to NarJ of nitrate reductases.
Pssm-ID: 274600 Cd Length: 197 Bit Score: 54.75 E-value: 1.52e-08
sulfite reductase, subunit A; Members of this protein family include the A subunit, one of ...
232-566
5.22e-127
sulfite reductase, subunit A; Members of this protein family include the A subunit, one of three subunits, of the anaerobic sulfite reductase of Salmonella, and close homologs from various Clostridum species, where the three-gene neighborhood is preserved. Two such gene clusters are found in Clostridium perfringens, but it may be that these sets of genes correspond to the distinct assimilatory and dissimilatory forms as seen in Clostridium pasteurianum. Note that any one of these enzymes may have secondary substates such as NH2OH, SeO3(2-), and SO3(2-). Heterologous expression of the anaerobic sulfite reductase of Salmonella confers on Escherichia coli the ability to produce hydrogen sulfide gas from sulfite. [Central intermediary metabolism, Sulfur metabolism]
Pssm-ID: 131956 Cd Length: 334 Bit Score: 376.09 E-value: 5.22e-127
Nitrate reductase delta subunit; This family is the delta subunit of the nitrate reductase ...
54-185
1.36e-28
Nitrate reductase delta subunit; This family is the delta subunit of the nitrate reductase enzyme, The delta subunit is not part of the nitrate reductase enzyme but is most likely needed for assembly of the multi-subunit enzyme complex. In the absence of the delta subunit the core alpha beta enzyme complex is unstable. The delta subunit is essential for enzyme activity in vivo and in vitro. The nitrate reductase enzyme, EC:1.7.99.4 catalyze the conversion of nitrite to nitrate via the reduction of an acceptor. The nitrate reductase enzyme is composed of three subunits. Nitrate is the most widely used alternative electron acceptor after oxygen. This family also now contains the family TorD, a family of cytoplasmic chaperone proteins; like many prokaryotic molybdoenzymes, the TMAO reductase (TorA) of Escherichia coli requires the insertion of a bis(molybdopterin guanine dinucleotide) molybdenum (bis(MGD)Mo) cofactor in its catalytic site to be active and translocated to the periplasm. The TorD chaperone increases apoTorA activation up to four-fold, allowing maturation of most of the apoprotein. Therefore TorD is involved in the first step of TorA maturation to make it competent to receive the cofactor.
Pssm-ID: 460619 [Multi-domain] Cd Length: 135 Bit Score: 110.55 E-value: 1.36e-28
DMSO reductase family type II enzyme chaperone; Type II members of the DMSO reductase family ...
100-211
1.52e-08
DMSO reductase family type II enzyme chaperone; Type II members of the DMSO reductase family are heterotrimeric proteins with bis(molybdopterin guanine dinucleotide)Mo, iron-sulfur, and heme b prosthetic groups bound by the alpha, beta, and gamma subunits respectively. Members of this protein family are not part of the mature protein, although they are the product of a fourth clustered gene. Proteins in this family are interpreted as a chaperone, analogous to NarJ of nitrate reductases.
Pssm-ID: 274600 Cd Length: 197 Bit Score: 54.75 E-value: 1.52e-08
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.
of the residues that compose this conserved feature have been mapped to the query sequence.
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