cytochrome b family protein such as formate dehydrogenase subunit gamma or cytochrome b, a component of the ubiquinol-cytochrome c reductase complex (complex III or cytochrome b-c1 complex), a respiratory chain that generates an electrochemical potential coupled to ATP synthesis.
Cytochrome b (N-terminus)/b6/petB: Cytochrome b is a subunit of cytochrome bc1, an 11-subunit ...
3-202
2.61e-118
Cytochrome b (N-terminus)/b6/petB: Cytochrome b is a subunit of cytochrome bc1, an 11-subunit mitochondrial respiratory enzyme. Cytochrome b spans the mitochondrial membrane with 8 transmembrane helices (A-H) in eukaryotes. In plants and cyanobacteria, cytochrome b6 is analogous to eukaryote cytochrome b, containing two chains: helices A-D are encoded by the petB gene and helices E-H are encoded by the petD gene in these organisms. Cytochrome b/b6 contains two bound hemes and two ubiquinol/ubiquinone binding sites. The C-terminal portion of cytochrome b is described in a separate CD.
The actual alignment was detected with superfamily member PRK10639:
Pssm-ID: 474033 Cd Length: 211 Bit Score: 335.21 E-value: 2.61e-118
formate dehydrogenase, gamma subunit; This model represents the gamma chain of the gamma ...
8-202
7.70e-55
formate dehydrogenase, gamma subunit; This model represents the gamma chain of the gamma proteobacteria (and Aquifex aolicus) formate dehydrogenase. This subunit is integral to the cytoplasmic membrane, consisting of 4 transmembrane helices, and receives electrons from the beta subunit. The entire E. coli formate dehydrogenase N (nitrate-inducible form) has been crystallized. The gamma subunit contains two cytochromes, heme b(P) and heme b(C) near the periplasmic and cytoplasmic sides of the membrane respectively. The electron acceptor quinone binds at the cytoplasmic heme histidine ligand. NiFe-hydrogenase and thiosulfate reductase contain homologous gamma subunits, and these can be found scoring in the noise of this model. [Energy metabolism, Anaerobic, Energy metabolism, Electron transport]
Pssm-ID: 130645 Cd Length: 204 Bit Score: 173.84 E-value: 7.70e-55
Prokaryotic cytochrome b561; This family includes cytochrome b561 and related proteins, in ...
11-186
2.82e-15
Prokaryotic cytochrome b561; This family includes cytochrome b561 and related proteins, in addition to the nickel-dependent hydrogenases b-type cytochrome subunit. Cytochrome b561 is a secretory vesicle-specific electron transport protein. It is an integral membrane protein, that binds two heme groups non-covalently. This is a prokaryotic family. Members of the 'eukaryotic cytochrome b561' family can be found in Pfam: PF03188.
Pssm-ID: 426183 Cd Length: 180 Bit Score: 71.02 E-value: 2.82e-15
formate dehydrogenase, gamma subunit; This model represents the gamma chain of the gamma ...
8-202
7.70e-55
formate dehydrogenase, gamma subunit; This model represents the gamma chain of the gamma proteobacteria (and Aquifex aolicus) formate dehydrogenase. This subunit is integral to the cytoplasmic membrane, consisting of 4 transmembrane helices, and receives electrons from the beta subunit. The entire E. coli formate dehydrogenase N (nitrate-inducible form) has been crystallized. The gamma subunit contains two cytochromes, heme b(P) and heme b(C) near the periplasmic and cytoplasmic sides of the membrane respectively. The electron acceptor quinone binds at the cytoplasmic heme histidine ligand. NiFe-hydrogenase and thiosulfate reductase contain homologous gamma subunits, and these can be found scoring in the noise of this model. [Energy metabolism, Anaerobic, Energy metabolism, Electron transport]
Pssm-ID: 130645 Cd Length: 204 Bit Score: 173.84 E-value: 7.70e-55
Prokaryotic cytochrome b561; This family includes cytochrome b561 and related proteins, in ...
11-186
2.82e-15
Prokaryotic cytochrome b561; This family includes cytochrome b561 and related proteins, in addition to the nickel-dependent hydrogenases b-type cytochrome subunit. Cytochrome b561 is a secretory vesicle-specific electron transport protein. It is an integral membrane protein, that binds two heme groups non-covalently. This is a prokaryotic family. Members of the 'eukaryotic cytochrome b561' family can be found in Pfam: PF03188.
Pssm-ID: 426183 Cd Length: 180 Bit Score: 71.02 E-value: 2.82e-15
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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of your query sequence and the protein sequences used to curate the domain model,
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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.
The Show Concise/Full Display button at the top of the page can be used to select the desired level of detail: only top scoring hits
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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.
Click on the domain model's accession number to view the multiple sequence alignment of the proteins used to develop the corresponding domain model.
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,
or click on the triangles, if present, that represent functional sites (conserved features)
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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.
(labeled illustration) Full Display shows all domain models, in each hit category below, that meet or exceed the RPS-BLAST threshold for statistical significance.
(labeled illustration) Four types of hits can be shown, as available,
for each region on the query sequence:
specific hits meet or exceed a domain-specific e-value threshold
(illustrated example)
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
multi-domain models that were computationally detected and are likely to contain multiple single domains
Retrieve proteins that contain one or more of the domains present in the query sequence, using the Conserved Domain Architecture Retrieval Tool
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