virB8 family protein is a type IV secretion system (T4SS) protein which functions as a virulence factor that plays important roles in mediating intracellular survival and manipulating host immune response to infection
periplasmic domain of VirB8 protein; This family contains the periplasmic domain of VirB8 ...
104-240
3.27e-49
periplasmic domain of VirB8 protein; This family contains the periplasmic domain of VirB8 protein which is an essential assembly factor of type IV secretion system (T4SS) channel proteins that are highly diverse in function relative to other bacterial secretion systems. T4SS proteins are important virulence factors for many Gram-negative pathogens, such as Agrobacterium, Brucella, Legionella, and Helicobacter. VirB8 is a bacterial virulence protein with cytoplasmic, transmembrane, and periplasmic regions. It is thought that VirB8 is a primary constituent of a DNA transporter. It is a crucial structural and functional component of the T4SS, with interactions between VirB8 and many other T4SS proteins, including VirB10, VirB9, VirB1, VirB4, and VirB11, as well as with itself.
Pssm-ID: 319761 Cd Length: 137 Bit Score: 158.22 E-value: 3.27e-49
VirB8 protein; VirB8 is a bacterial virulence protein with cytoplasmic, transmembrane, and ...
35-240
2.43e-44
VirB8 protein; VirB8 is a bacterial virulence protein with cytoplasmic, transmembrane, and periplasmic regions. It is thought that it is a primary constituent of a DNA transporter. The periplasmic region interacts with VirB9, VirB10, and itself. This family also includes the conjugal transfer protein family TrbF, a family of proteins known to be involved in conjugal transfer. The TrbF protein is thought to compose part of the pilus required for transfer. This domain has a similar fold to the NTF2 protein.
Pssm-ID: 427873 Cd Length: 211 Bit Score: 148.26 E-value: 2.43e-44
periplasmic domain of VirB8 protein; This family contains the periplasmic domain of VirB8 ...
104-240
3.27e-49
periplasmic domain of VirB8 protein; This family contains the periplasmic domain of VirB8 protein which is an essential assembly factor of type IV secretion system (T4SS) channel proteins that are highly diverse in function relative to other bacterial secretion systems. T4SS proteins are important virulence factors for many Gram-negative pathogens, such as Agrobacterium, Brucella, Legionella, and Helicobacter. VirB8 is a bacterial virulence protein with cytoplasmic, transmembrane, and periplasmic regions. It is thought that VirB8 is a primary constituent of a DNA transporter. It is a crucial structural and functional component of the T4SS, with interactions between VirB8 and many other T4SS proteins, including VirB10, VirB9, VirB1, VirB4, and VirB11, as well as with itself.
Pssm-ID: 319761 Cd Length: 137 Bit Score: 158.22 E-value: 3.27e-49
VirB8 protein; VirB8 is a bacterial virulence protein with cytoplasmic, transmembrane, and ...
35-240
2.43e-44
VirB8 protein; VirB8 is a bacterial virulence protein with cytoplasmic, transmembrane, and periplasmic regions. It is thought that it is a primary constituent of a DNA transporter. The periplasmic region interacts with VirB9, VirB10, and itself. This family also includes the conjugal transfer protein family TrbF, a family of proteins known to be involved in conjugal transfer. The TrbF protein is thought to compose part of the pilus required for transfer. This domain has a similar fold to the NTF2 protein.
Pssm-ID: 427873 Cd Length: 211 Bit Score: 148.26 E-value: 2.43e-44
virulence protein VirB8; This family contains bacterial virulence protein VirB8 and similar ...
107-240
3.52e-17
virulence protein VirB8; This family contains bacterial virulence protein VirB8 and similar proteins which consist of cytoplasmic, transmembrane, and periplasmic regions. VirB8 is an essential assembly factor of type IV secretion system (T4SS) channel proteins that are highly diverse in function relative to other bacterial secretion systems. T4SS proteins are important virulence factors for many Gram-negative pathogens, such as Agrobacterium, Brucella, Legionella, and Helicobacter. This family also includes the conjugal transfer protein family TrbF, a family of proteins known to be involved in conjugal transfer. The TrbF protein is thought to compose part of the pilus required for transfer. This domain has a similar fold to the nuclear transport factor-2 (NTF2) protein.
Pssm-ID: 319760 Cd Length: 133 Bit Score: 75.45 E-value: 3.52e-17
conjugal transfer protein TrbF; This family includes the conjugal transfer protein family TrbF, ...
106-232
8.31e-08
conjugal transfer protein TrbF; This family includes the conjugal transfer protein family TrbF, a family of proteins known to be involved in conjugal transfer. The TrbF protein is thought to compose part of the pilus required for transfer. This domain is similar to the type IV secretion system (T4ASS) component VirB8 and possibly has a similar fold to the nuclear transport factor-2 (NTF-2)-like superfamily.
Pssm-ID: 319762 Cd Length: 133 Bit Score: 49.93 E-value: 8.31e-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.
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.
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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
(labeled illustration) or all hits
(labeled illustration).
Domains are color coded according to superfamilies
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(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).
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