phage shock protein PspA negatively regulates expression of the pspABCDE promoter and of pspG through negative regulation of the psp-specific transcriptional activator PspF; is also required for membrane integrity, efficient translocation and maintenance of the proton motive force
phage shock protein A; Members of this family are the phage shock protein PspA, from the phage ...
1-218
2.54e-101
phage shock protein A; Members of this family are the phage shock protein PspA, from the phage shock operon. This is a narrower family than the set of PspA and its homologs, sometimes several in a genome, as described by pfam04012. PspA appears to maintain the protonmotive force under stress conditions that include overexpression of certain phage secretins, heat shock, ethanol, and protein export defects. [Cellular processes, Adaptations to atypical conditions]
:
Pssm-ID: 274372 [Multi-domain] Cd Length: 219 Bit Score: 292.65 E-value: 2.54e-101
phage shock protein A; Members of this family are the phage shock protein PspA, from the phage ...
1-218
2.54e-101
phage shock protein A; Members of this family are the phage shock protein PspA, from the phage shock operon. This is a narrower family than the set of PspA and its homologs, sometimes several in a genome, as described by pfam04012. PspA appears to maintain the protonmotive force under stress conditions that include overexpression of certain phage secretins, heat shock, ethanol, and protein export defects. [Cellular processes, Adaptations to atypical conditions]
Pssm-ID: 274372 [Multi-domain] Cd Length: 219 Bit Score: 292.65 E-value: 2.54e-101
PspA/IM30 family; This family includes PspA a protein that suppresses sigma54-dependent ...
3-215
2.50e-48
PspA/IM30 family; This family includes PspA a protein that suppresses sigma54-dependent transcription. The PspA protein, a negative regulator of the Escherichia coli phage shock psp operon, is produced when virulence factors are exported through secretins in many Gram-negative pathogenic bacteria and its homolog in plants, VIPP1, plays a critical role in thylakoid biogenesis, essential for photosynthesis. Activation of transcription by the enhancer-dependent bacterial sigma(54) containing RNA polymerase occurs through ATP hydrolysis-driven protein conformational changes enabled by activator proteins that belong to the large AAA(+) mechanochemical protein family. It has been shown that PspA directly and specifically acts upon and binds to the AAA(+) domain of the PspF transcription activator.
Pssm-ID: 461130 [Multi-domain] Cd Length: 215 Bit Score: 157.92 E-value: 2.50e-48
Zinc dependent phospholipase C/S1-P1 nuclease; This model describes both the bacterial and ...
4-139
7.07e-04
Zinc dependent phospholipase C/S1-P1 nuclease; This model describes both the bacterial and archeal zinc-dependent phospholipase C, a domain found in the alpha toxin of Clostridium perfringens, as well as S1/P1 nucleases, which predominantly act on single-stranded DNA and RNA.
Pssm-ID: 211380 Cd Length: 238 Bit Score: 39.73 E-value: 7.07e-04
phage shock protein A; Members of this family are the phage shock protein PspA, from the phage ...
1-218
2.54e-101
phage shock protein A; Members of this family are the phage shock protein PspA, from the phage shock operon. This is a narrower family than the set of PspA and its homologs, sometimes several in a genome, as described by pfam04012. PspA appears to maintain the protonmotive force under stress conditions that include overexpression of certain phage secretins, heat shock, ethanol, and protein export defects. [Cellular processes, Adaptations to atypical conditions]
Pssm-ID: 274372 [Multi-domain] Cd Length: 219 Bit Score: 292.65 E-value: 2.54e-101
PspA/IM30 family; This family includes PspA a protein that suppresses sigma54-dependent ...
3-215
2.50e-48
PspA/IM30 family; This family includes PspA a protein that suppresses sigma54-dependent transcription. The PspA protein, a negative regulator of the Escherichia coli phage shock psp operon, is produced when virulence factors are exported through secretins in many Gram-negative pathogenic bacteria and its homolog in plants, VIPP1, plays a critical role in thylakoid biogenesis, essential for photosynthesis. Activation of transcription by the enhancer-dependent bacterial sigma(54) containing RNA polymerase occurs through ATP hydrolysis-driven protein conformational changes enabled by activator proteins that belong to the large AAA(+) mechanochemical protein family. It has been shown that PspA directly and specifically acts upon and binds to the AAA(+) domain of the PspF transcription activator.
Pssm-ID: 461130 [Multi-domain] Cd Length: 215 Bit Score: 157.92 E-value: 2.50e-48
Zinc dependent phospholipase C/S1-P1 nuclease; This model describes both the bacterial and ...
4-139
7.07e-04
Zinc dependent phospholipase C/S1-P1 nuclease; This model describes both the bacterial and archeal zinc-dependent phospholipase C, a domain found in the alpha toxin of Clostridium perfringens, as well as S1/P1 nucleases, which predominantly act on single-stranded DNA and RNA.
Pssm-ID: 211380 Cd Length: 238 Bit Score: 39.73 E-value: 7.07e-04
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.
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,
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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
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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