electron transfer flavoprotein (ETF) subunit alpha/FixB family protein such as protein FixB, which is required for anaerobic carnitine reduction, and ETF subunit alpha, which with subunit beta forms ETF, a specific electron acceptor for various dehydrogenases
electron transfer flavoprotein (ETF) alpha; The electron transfer flavoprotein (ETF) serves as ...
3-166
3.82e-69
electron transfer flavoprotein (ETF) alpha; The electron transfer flavoprotein (ETF) serves as a specific electron acceptor for various mitochondrial dehydrogenases. ETF transfers electrons to the main respiratory chain via ETF-ubiquinone oxidoreductase. ETF is a heterodimer, consisting of an alpha and a beta subunit, which binds one molecule of FAD per dimer. A similar system also exists in some bacteria. The homologous pair of proteins (FixA/FixB) are essential for nitrogen fixation. The alpha subunit of ETF is structurally related to the bacterial nitrogen fixation protein fixB which could play a role in a redox process and feed electrons to ferredoxin.
Pssm-ID: 467488 [Multi-domain] Cd Length: 171 Bit Score: 212.80 E-value: 3.82e-69
Electron transfer flavoprotein FAD-binding domain; This domain found at the C-terminus of ...
193-273
1.22e-51
Electron transfer flavoprotein FAD-binding domain; This domain found at the C-terminus of electron transfer flavoprotein alpha chain and binds to FAD. The fold consists of a five-stranded parallel beta sheet as the core of the domain, flanked by alternating helices. A small part of this domain is donated by the beta chain.
Pssm-ID: 459931 [Multi-domain] Cd Length: 81 Bit Score: 164.83 E-value: 1.22e-51
Electron transfer flavoprotein domain; Electron transfer flavoproteins (ETFs) serve as ...
8-169
1.35e-34
Electron transfer flavoprotein domain; Electron transfer flavoproteins (ETFs) serve as specific electron acceptors for primary dehydrogenases, transferring the electrons to terminal respiratory systems. They can be functionally classified into constitutive, "housekeeping" ETFs, mainly involved in the oxidation of fatty acids (Group I), and ETFs produced by some prokaryotes under specific growth conditions, receiving electrons only from the oxidation of specific substrates (Group II). ETFs are heterodimeric proteins composed of an alpha and beta subunit, and contain an FAD cofactor and AMP. ETF consists of three domains: domains I and II are formed by the N- and C-terminal portions of the alpha subunit, respectively, while domain III is formed by the beta subunit. Domains I and III share an almost identical alpha-beta-alpha sandwich fold, while domain II forms an alpha-beta-alpha sandwich similar to that of bacterial flavodoxins. FAD is bound in a cleft between domains II and III, while domain III binds the AMP molecule. Interactions between domains I and III stabilise the protein, forming a shallow bowl where domain II resides. This entry represents the N-terminal domain of both the alpha and beta subunits from Group I and Group II ETFs.
Pssm-ID: 214890 [Multi-domain] Cd Length: 185 Bit Score: 124.30 E-value: 1.35e-34
electron transfer flavoprotein (ETF) alpha; The electron transfer flavoprotein (ETF) serves as ...
3-166
3.82e-69
electron transfer flavoprotein (ETF) alpha; The electron transfer flavoprotein (ETF) serves as a specific electron acceptor for various mitochondrial dehydrogenases. ETF transfers electrons to the main respiratory chain via ETF-ubiquinone oxidoreductase. ETF is a heterodimer, consisting of an alpha and a beta subunit, which binds one molecule of FAD per dimer. A similar system also exists in some bacteria. The homologous pair of proteins (FixA/FixB) are essential for nitrogen fixation. The alpha subunit of ETF is structurally related to the bacterial nitrogen fixation protein fixB which could play a role in a redox process and feed electrons to ferredoxin.
Pssm-ID: 467488 [Multi-domain] Cd Length: 171 Bit Score: 212.80 E-value: 3.82e-69
Electron transfer flavoprotein FAD-binding domain; This domain found at the C-terminus of ...
193-273
1.22e-51
Electron transfer flavoprotein FAD-binding domain; This domain found at the C-terminus of electron transfer flavoprotein alpha chain and binds to FAD. The fold consists of a five-stranded parallel beta sheet as the core of the domain, flanked by alternating helices. A small part of this domain is donated by the beta chain.
Pssm-ID: 459931 [Multi-domain] Cd Length: 81 Bit Score: 164.83 E-value: 1.22e-51
Electron transfer flavoprotein domain; This family includes the homologous domain shared ...
4-163
2.71e-39
Electron transfer flavoprotein domain; This family includes the homologous domain shared between the alpha and beta subunits of the electron transfer flavoprotein.
Pssm-ID: 425985 [Multi-domain] Cd Length: 178 Bit Score: 136.21 E-value: 2.71e-39
Electron transfer flavoprotein domain; Electron transfer flavoproteins (ETFs) serve as ...
8-169
1.35e-34
Electron transfer flavoprotein domain; Electron transfer flavoproteins (ETFs) serve as specific electron acceptors for primary dehydrogenases, transferring the electrons to terminal respiratory systems. They can be functionally classified into constitutive, "housekeeping" ETFs, mainly involved in the oxidation of fatty acids (Group I), and ETFs produced by some prokaryotes under specific growth conditions, receiving electrons only from the oxidation of specific substrates (Group II). ETFs are heterodimeric proteins composed of an alpha and beta subunit, and contain an FAD cofactor and AMP. ETF consists of three domains: domains I and II are formed by the N- and C-terminal portions of the alpha subunit, respectively, while domain III is formed by the beta subunit. Domains I and III share an almost identical alpha-beta-alpha sandwich fold, while domain II forms an alpha-beta-alpha sandwich similar to that of bacterial flavodoxins. FAD is bound in a cleft between domains II and III, while domain III binds the AMP molecule. Interactions between domains I and III stabilise the protein, forming a shallow bowl where domain II resides. This entry represents the N-terminal domain of both the alpha and beta subunits from Group I and Group II ETFs.
Pssm-ID: 214890 [Multi-domain] Cd Length: 185 Bit Score: 124.30 E-value: 1.35e-34
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.
Click on the triangle to view details about the feature, including a multiple sequence alignment
of your query sequence and the protein sequences used to curate the domain model,
where hash marks (#) above the aligned sequences show the location of the conserved feature residues.
The thumbnail image, if present, provides an approximate view of the feature's location in 3 dimensions.
Click on the triangle for interactive 3D structure viewing options.
Functional characterization of the conserved domain architecture found on the query.
Click here to see more details.
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
(labeled illustration) or all hits
(labeled illustration).
Domains are color coded according to superfamilies
to which they have been assigned. Hits with scores that pass a domain-specific threshold
(specific hits) are drawn in bright colors.
Others (non-specific hits) and
superfamily placeholders are drawn in pastel colors.
if a domain or superfamily has been annotated with functional sites (conserved features),
they are mapped to the query sequence and indicated through sets of triangles
with the same color and shade of the domain or superfamily that provides the annotation. Mouse over the colored bars or triangles to see descriptions of the domains and features.
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)
mapped to the query sequence.
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
meet or exceed the RPS-BLAST threshold for statistical significance (default E-value cutoff of 0.01, or an E-value selected by user via the
advanced search options)
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
(CDART).
Modify your query to search against a different database and/or use advanced search options
