porin forms an aqueous channel for the diffusion of small hydrophilic molecules across the outer membrane, similar to mammalian voltage-dependent anion-selective channel proteins
Voltage-dependent anion channel of the outer mitochondrial membrane; The voltage-dependent ...
5-275
1.84e-82
Voltage-dependent anion channel of the outer mitochondrial membrane; The voltage-dependent anion channel (VDAC) regulates the flux of mostly anionic metabolites through the outer mitochondrial membrane, which is highly permeable to small molecules. VDAC is the most abundant protein in the outer membrane, and membrane potentials can toggle VDAC between open or high-conducting and closed or low-conducting forms. VDAC binds to and is regulated in part by hexokinase, an interaction that renders mitochondria less susceptible to pro-apoptotic signals, most likely by intefering with VDAC's capability to respond to Bcl-2 family proteins. While VDAC appears to play a key role in mitochondrially induced cell death, a proposed involvement in forming the mitochondrial permeability transition pore, which is characteristic for damaged mitochondria and apoptosis, has been challenged by more recent studies.
Pssm-ID: 132767 [Multi-domain] Cd Length: 276 Bit Score: 249.05 E-value: 1.84e-82
Voltage-dependent anion channel of the outer mitochondrial membrane; The voltage-dependent ...
5-275
1.84e-82
Voltage-dependent anion channel of the outer mitochondrial membrane; The voltage-dependent anion channel (VDAC) regulates the flux of mostly anionic metabolites through the outer mitochondrial membrane, which is highly permeable to small molecules. VDAC is the most abundant protein in the outer membrane, and membrane potentials can toggle VDAC between open or high-conducting and closed or low-conducting forms. VDAC binds to and is regulated in part by hexokinase, an interaction that renders mitochondria less susceptible to pro-apoptotic signals, most likely by intefering with VDAC's capability to respond to Bcl-2 family proteins. While VDAC appears to play a key role in mitochondrially induced cell death, a proposed involvement in forming the mitochondrial permeability transition pore, which is characteristic for damaged mitochondria and apoptosis, has been challenged by more recent studies.
Pssm-ID: 132767 [Multi-domain] Cd Length: 276 Bit Score: 249.05 E-value: 1.84e-82
Translocase of outer mitochondrial membrane 40 (Tom40); Tom40 forms a channel in the ...
5-274
9.90e-11
Translocase of outer mitochondrial membrane 40 (Tom40); Tom40 forms a channel in the mitochondrial outer membrane with a pore about 1.5 to 2.5 nanometers wide. It functions as a transport channel for unfolded protein chains and forms a complex with Tom5, Tom6, Tom7, and Tom22. The primary receptors Tom20 and Tom70 recruit the unfolded precursor protein from the mitochondrial-import stimulating factor (MSF) or cytosolic Hsc70. The precursor passes through the Tom40 channel and through another channel in the inner membrane, formed by Tim23, to be finally translocated into the mitochondrial matrix. The process depends on a proton motive force across the inner membrane and requires a contact site where the outer and inner membranes come close. Tom40 is also involved in inserting outer membrane proteins into the membrane, most likely not via a lateral opening in the pore, but by transfering precursor proteins to an outer membrane sorting and assembly machinery.
Pssm-ID: 132766 [Multi-domain] Cd Length: 279 Bit Score: 60.69 E-value: 9.90e-11
Eukaryotic porin family that forms channels in the mitochondrial outer membrane; The porin ...
8-261
2.61e-09
Eukaryotic porin family that forms channels in the mitochondrial outer membrane; The porin family 3 contains two sub-families that play vital roles in the mitochondrial outer membrane, a translocase for unfolded pre-proteins (Tom40) and the voltage-dependent anion channel (VDAC) that regulates the flux of mostly anionic metabolites through the outer mitochondrial membrane.
Pssm-ID: 132765 [Multi-domain] Cd Length: 274 Bit Score: 56.51 E-value: 2.61e-09
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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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),
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
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