TolQ protein; TolQ is one of the essential components of the Tol-Pal system. Together with ...
6-220
1.82e-107
TolQ protein; TolQ is one of the essential components of the Tol-Pal system. Together with TolR, it harnesses protonmotive force to energize TolA, which spans the periplasm to reach the complex of TolB and Pal at the outer member. The tol-pal system proves to be important for maintaining outer membrane integrity. Gene pairs similar to the TolQ and TolR gene pair often number several per genome, but this model describes specificially TolQ per se, as found in tol-pal operons. A close homolog, excluded from this model, is ExbB of the ExbB/ExbD/TonB protein complex, which powers transport of siderophores and vitamin B12 across the bacterial outer membrane. The Tol-Pal system is exploited by colicin and filamentous phage DNA to enter the cell. It is also implicated in pathogenesis in several bacterial species [Transport and binding proteins, Other, Cellular processes, Pathogenesis]
Pssm-ID: 131843 Cd Length: 215 Bit Score: 308.41 E-value: 1.82e-107
MotA/TolQ/ExbB proton channel family; This family groups together integral membrane proteins ...
81-204
2.89e-41
MotA/TolQ/ExbB proton channel family; This family groups together integral membrane proteins that appear to be involved translocation of proteins across a membrane. These proteins are probably proton channels. MotA is an essential component of the flageller motor that uses a proton gradient to generate rotational motion in the flageller. ExbB is part of the TonB-dependent transduction complex. The TonB complex uses the proton gradient across the inner bacterial membrane to transport large molecules across the outer bacterial membrane.
Pssm-ID: 460268 Cd Length: 120 Bit Score: 136.84 E-value: 2.89e-41
TolQ protein; TolQ is one of the essential components of the Tol-Pal system. Together with ...
6-220
1.82e-107
TolQ protein; TolQ is one of the essential components of the Tol-Pal system. Together with TolR, it harnesses protonmotive force to energize TolA, which spans the periplasm to reach the complex of TolB and Pal at the outer member. The tol-pal system proves to be important for maintaining outer membrane integrity. Gene pairs similar to the TolQ and TolR gene pair often number several per genome, but this model describes specificially TolQ per se, as found in tol-pal operons. A close homolog, excluded from this model, is ExbB of the ExbB/ExbD/TonB protein complex, which powers transport of siderophores and vitamin B12 across the bacterial outer membrane. The Tol-Pal system is exploited by colicin and filamentous phage DNA to enter the cell. It is also implicated in pathogenesis in several bacterial species [Transport and binding proteins, Other, Cellular processes, Pathogenesis]
Pssm-ID: 131843 Cd Length: 215 Bit Score: 308.41 E-value: 1.82e-107
MotA/TolQ/ExbB proton channel family; This family groups together integral membrane proteins ...
81-204
2.89e-41
MotA/TolQ/ExbB proton channel family; This family groups together integral membrane proteins that appear to be involved translocation of proteins across a membrane. These proteins are probably proton channels. MotA is an essential component of the flageller motor that uses a proton gradient to generate rotational motion in the flageller. ExbB is part of the TonB-dependent transduction complex. The TonB complex uses the proton gradient across the inner bacterial membrane to transport large molecules across the outer bacterial membrane.
Pssm-ID: 460268 Cd Length: 120 Bit Score: 136.84 E-value: 2.89e-41
tonB-system energizer ExbB; This model describes ExbB proteins, part of the MotA/TolQ/ExbB ...
10-201
3.65e-31
tonB-system energizer ExbB; This model describes ExbB proteins, part of the MotA/TolQ/ExbB protein family. The paired proteins MotA and MotB, TolQ and TolR, and ExbB and ExbD harness the proton-motive force to drive the flagellar motor, energize the Tol-Pal system, or energize TonB, respectively. Tol-Pal and TonB are both active at the outer membrane. Genomes may have many different TonB-dependent receptors, of which many of those characterized are involved in siderophore transport across the outer membrane. [Transport and binding proteins, Cations and iron carrying compounds]
Pssm-ID: 131844 Cd Length: 211 Bit Score: 113.65 E-value: 3.65e-31
tonB-system energizer ExbB, group 2; Members of this protein family appear to be the ExbB ...
122-211
3.71e-13
tonB-system energizer ExbB, group 2; Members of this protein family appear to be the ExbB protein of an ExbBD proton-transporting membrane complex that, by means of TonB, energizes transport by TonB-dependent receptors. Note that this family represents one of at least two distinct groups TolQ homologs designated ExbB - see also TIGR02797. Each group associates with a distinct group of ExbD proteins, and a single species may have two ExbB/ExbD/TonB systems. [Transport and binding proteins, Cations and iron carrying compounds]
Pssm-ID: 131852 Cd Length: 138 Bit Score: 64.42 E-value: 3.71e-13
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,
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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.
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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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Domains are color coded according to superfamilies
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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),
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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)
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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
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
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