sulfite reductase, dissimilatory-type alpha subunit; Dissimilatory sulfite reductase catalyzes the six-electron reduction of sulfite to sulfide, as the terminal reaction in dissimilatory sulfate reduction. It remains unclear however, whether trithionate and thiosulfate serve as intermediate compounds to sulfide, or as end products of sulfite reduction. Sulfite reductase is a multisubunit enzyme composed of dimers of either alpha/beta or alpha/beta/gamma subunits, each containing a siroheme and iron sulfur cluster prosthetic center. Found in sulfate-reducing bacteria, these genes are commonly located in an unidirectional gene cluster. This model describes the alpha subunit of sulfite reductase. [Central intermediary metabolism, Sulfur metabolism]
The actual alignment was detected with superfamily member TIGR02064:
Pssm-ID: 273948 [Multi-domain] Cd Length: 402 Bit Score: 277.49 E-value: 5.71e-93
sulfite reductase, dissimilatory-type alpha subunit; Dissimilatory sulfite reductase catalyzes the six-electron reduction of sulfite to sulfide, as the terminal reaction in dissimilatory sulfate reduction. It remains unclear however, whether trithionate and thiosulfate serve as intermediate compounds to sulfide, or as end products of sulfite reduction. Sulfite reductase is a multisubunit enzyme composed of dimers of either alpha/beta or alpha/beta/gamma subunits, each containing a siroheme and iron sulfur cluster prosthetic center. Found in sulfate-reducing bacteria, these genes are commonly located in an unidirectional gene cluster. This model describes the alpha subunit of sulfite reductase. [Central intermediary metabolism, Sulfur metabolism]
Pssm-ID: 273948 [Multi-domain] Cd Length: 402 Bit Score: 277.49 E-value: 5.71e-93
Nitrite and sulphite reductase 4Fe-4S domain; Sulphite and nitrite reductases are vital in the ...
102-180
6.32e-15
Nitrite and sulphite reductase 4Fe-4S domain; Sulphite and nitrite reductases are vital in the biosynthetic assimilation of sulphur and nitrogen, respectfully. They are also both important for the dissimilation of oxidized anions for energy transduction.
Pssm-ID: 426031 [Multi-domain] Cd Length: 153 Bit Score: 68.84 E-value: 6.32e-15
Sulfite reductase, beta subunit (hemoprotein) [Inorganic ion transport and metabolism]; ...
46-176
1.54e-08
Sulfite reductase, beta subunit (hemoprotein) [Inorganic ion transport and metabolism]; Sulfite reductase, beta subunit (hemoprotein) is part of the Pathway/BioSystem: Cysteine biosynthesis
Pssm-ID: 439925 [Multi-domain] Cd Length: 519 Bit Score: 53.97 E-value: 1.54e-08
sulfite reductase, dissimilatory-type alpha subunit; Dissimilatory sulfite reductase catalyzes the six-electron reduction of sulfite to sulfide, as the terminal reaction in dissimilatory sulfate reduction. It remains unclear however, whether trithionate and thiosulfate serve as intermediate compounds to sulfide, or as end products of sulfite reduction. Sulfite reductase is a multisubunit enzyme composed of dimers of either alpha/beta or alpha/beta/gamma subunits, each containing a siroheme and iron sulfur cluster prosthetic center. Found in sulfate-reducing bacteria, these genes are commonly located in an unidirectional gene cluster. This model describes the alpha subunit of sulfite reductase. [Central intermediary metabolism, Sulfur metabolism]
Pssm-ID: 273948 [Multi-domain] Cd Length: 402 Bit Score: 277.49 E-value: 5.71e-93
Nitrite and sulphite reductase 4Fe-4S domain; Sulphite and nitrite reductases are vital in the ...
102-180
6.32e-15
Nitrite and sulphite reductase 4Fe-4S domain; Sulphite and nitrite reductases are vital in the biosynthetic assimilation of sulphur and nitrogen, respectfully. They are also both important for the dissimilation of oxidized anions for energy transduction.
Pssm-ID: 426031 [Multi-domain] Cd Length: 153 Bit Score: 68.84 E-value: 6.32e-15
Nitrite/Sulfite reductase ferredoxin-like half domain; Sulfite and Nitrite reductases are key ...
33-94
1.89e-10
Nitrite/Sulfite reductase ferredoxin-like half domain; Sulfite and Nitrite reductases are key to both biosynthetic assimilation of sulfur and nitrogen and dissimilation of oxidized anions for energy transduction. Two copies of this repeat are found in Nitrite and Sulfite reductases and form a single structural domain.
Pssm-ID: 377044 [Multi-domain] Cd Length: 67 Bit Score: 54.84 E-value: 1.89e-10
Sulfite reductase, beta subunit (hemoprotein) [Inorganic ion transport and metabolism]; ...
46-176
1.54e-08
Sulfite reductase, beta subunit (hemoprotein) [Inorganic ion transport and metabolism]; Sulfite reductase, beta subunit (hemoprotein) is part of the Pathway/BioSystem: Cysteine biosynthesis
Pssm-ID: 439925 [Multi-domain] Cd Length: 519 Bit Score: 53.97 E-value: 1.54e-08
Sulfite reductase, beta subunit (hemoprotein) [Inorganic ion transport and metabolism]; ...
38-175
2.66e-05
Sulfite reductase, beta subunit (hemoprotein) [Inorganic ion transport and metabolism]; Sulfite reductase, beta subunit (hemoprotein) is part of the Pathway/BioSystem: Cysteine biosynthesis
Pssm-ID: 439925 [Multi-domain] Cd Length: 519 Bit Score: 43.95 E-value: 2.66e-05
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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Functional characterization of the conserved domain architecture found on the query.
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This image shows a graphical summary of conserved domains identified on the query sequence.
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if a domain or superfamily has been annotated with functional sites (conserved features),
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click on the bars or triangles to view your query sequence embedded in a multiple sequence alignment of the proteins used to develop the corresponding domain model.
The table lists conserved domains identified on the query sequence. Click on the plus sign (+) on the left to display full descriptions, alignments, and scores.
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To view your query sequence embedded in that multiple sequence alignment, click on the colored bars in the Graphical Summary portion of the search results page,
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Concise Display shows only the best scoring domain model, in each hit category listed below except non-specific hits, for each region on the query sequence.
(labeled illustration) Standard Display shows only the best scoring domain model from each source, in each hit category listed below for each region on the query sequence.
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(labeled illustration) Four types of hits can be shown, as available,
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specific hits meet or exceed a domain-specific e-value threshold
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and represent a very high confidence that the query sequence belongs to the same protein family as the sequences use to create the domain model
non-specific hits
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the domain superfamily to which the specific and non-specific hits belong
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