Type 2 periplasmic binding fold superfamily; This evolutionary model and hierarchy represent ...
10-228
2.03e-101
Type 2 periplasmic binding fold superfamily; This evolutionary model and hierarchy represent the ligand-binding domains found in solute binding proteins that serve as initial receptors in the transport, signal transduction and channel gating. The PBP2 proteins share the same architecture as periplasmic binding proteins type 1 (PBP1), but have a different topology. They are typically comprised of two globular subdomains connected by a flexible hinge and bind their ligand in the cleft between these domains in a manner resembling a Venus flytrap. The origin of PBP module can be traced across the distant phyla, including eukaryotes, archebacteria, and prokaryotes. The majority of PBP2 proteins are involved in the uptake of a variety of soluble substrates such as phosphate, sulfate, polysaccharides, lysine/arginine/ornithine, and histidine. After binding their specific ligand with high affinity, they can interact with a cognate membrane transport complex comprised of two integral membrane domains and two cytoplasmically located ATPase domains. This interaction triggers the ligand translocation across the cytoplasmic membrane energized by ATP hydrolysis. Besides transport proteins, the family includes ionotropic glutamate receptors and unorthodox sensor proteins involved in signal transduction. The substrate binding domain of the LysR transcriptional regulators and the oligopeptide-like transport systems also contain the type 2 periplasmic binding fold and thus they are significantly homologous to that of the PBP2; however, these two families are grouped into a separate hierarchy of the PBP2 superfamily due to the large number of protein sequences.
The actual alignment was detected with superfamily member cd13592:
Pssm-ID: 473866 Cd Length: 208 Bit Score: 295.67 E-value: 2.03e-101
The catalytic domain of hexameric long form HisGL2; contains the type 2 periplasmic binding ...
10-228
2.03e-101
The catalytic domain of hexameric long form HisGL2; contains the type 2 periplasmic binding protein fold; Encoded by the hisG gene, the ATP phosphoribosyltransferase (ATP-PRT, EC 2.4.2.17) is the first enzyme in histidine biosynthetic pathway that catalyzes the condensation of ATP and PRPP (5'-phosphoribosyl 1'-pyrophosphate), and is regulated by a feedback inhibition from the product histidine. ATP-PRT has two distinct forms: a hexameric long form, HisGL, containing two catalytic domains and a C-terminal regulatory domain; and a hetero-octomeric short form, HisGs, without the regulatory domain. HisGL is catalytically competent, but the hetero-octameric HisGs requires the second subunit HisZ, a paralog to the catalytic domain of functional histidyl-tRNA synthetases (HisRSs), for the enzyme activity. This catalytic domain belongs to the type 2 periplasmic binding fold protein superfamily (PBP2). The PBP2 proteins are typically comprised of two globular subdomains connected by a flexible hinge and bind their ligand in the cleft between these domains in a manner resembling a Venus flytrap. The majority of PBP2 proteins function in the uptake of small soluble substrates in eubacteria and archaea.
Pssm-ID: 270310 Cd Length: 208 Bit Score: 295.67 E-value: 2.03e-101
ATP phosphoribosyltransferase [Amino acid transport and metabolism]; ATP ...
9-305
7.02e-89
ATP phosphoribosyltransferase [Amino acid transport and metabolism]; ATP phosphoribosyltransferase is part of the Pathway/BioSystem: Histidine biosynthesis
Pssm-ID: 439810 [Multi-domain] Cd Length: 281 Bit Score: 266.57 E-value: 7.02e-89
ATP phosphoribosyltransferase; Members of this family from B. subtilis, Aquifex aeolicus, and ...
11-204
3.67e-49
ATP phosphoribosyltransferase; Members of this family from B. subtilis, Aquifex aeolicus, and Synechocystis PCC6803 (and related taxa) lack the C-terminal third of the sequence. The sole homolog from Archaeoglobus fulgidus lacks the N-terminal 50 residues (as reported) and is otherwise atypical of the rest of the family. This model excludes the C-terminal extension. [Amino acid biosynthesis, Histidine family]
Pssm-ID: 272888 Cd Length: 183 Bit Score: 161.56 E-value: 3.67e-49
The catalytic domain of hexameric long form HisGL2; contains the type 2 periplasmic binding ...
10-228
2.03e-101
The catalytic domain of hexameric long form HisGL2; contains the type 2 periplasmic binding protein fold; Encoded by the hisG gene, the ATP phosphoribosyltransferase (ATP-PRT, EC 2.4.2.17) is the first enzyme in histidine biosynthetic pathway that catalyzes the condensation of ATP and PRPP (5'-phosphoribosyl 1'-pyrophosphate), and is regulated by a feedback inhibition from the product histidine. ATP-PRT has two distinct forms: a hexameric long form, HisGL, containing two catalytic domains and a C-terminal regulatory domain; and a hetero-octomeric short form, HisGs, without the regulatory domain. HisGL is catalytically competent, but the hetero-octameric HisGs requires the second subunit HisZ, a paralog to the catalytic domain of functional histidyl-tRNA synthetases (HisRSs), for the enzyme activity. This catalytic domain belongs to the type 2 periplasmic binding fold protein superfamily (PBP2). The PBP2 proteins are typically comprised of two globular subdomains connected by a flexible hinge and bind their ligand in the cleft between these domains in a manner resembling a Venus flytrap. The majority of PBP2 proteins function in the uptake of small soluble substrates in eubacteria and archaea.
Pssm-ID: 270310 Cd Length: 208 Bit Score: 295.67 E-value: 2.03e-101
ATP phosphoribosyltransferase [Amino acid transport and metabolism]; ATP ...
9-305
7.02e-89
ATP phosphoribosyltransferase [Amino acid transport and metabolism]; ATP phosphoribosyltransferase is part of the Pathway/BioSystem: Histidine biosynthesis
Pssm-ID: 439810 [Multi-domain] Cd Length: 281 Bit Score: 266.57 E-value: 7.02e-89
ATP phosphoribosyltransferase; Members of this family from B. subtilis, Aquifex aeolicus, and ...
11-204
3.67e-49
ATP phosphoribosyltransferase; Members of this family from B. subtilis, Aquifex aeolicus, and Synechocystis PCC6803 (and related taxa) lack the C-terminal third of the sequence. The sole homolog from Archaeoglobus fulgidus lacks the N-terminal 50 residues (as reported) and is otherwise atypical of the rest of the family. This model excludes the C-terminal extension. [Amino acid biosynthesis, Histidine family]
Pssm-ID: 272888 Cd Length: 183 Bit Score: 161.56 E-value: 3.67e-49
The catalytic domain of hexameric long form HisGL4; contains the type 2 periplasmic binding ...
11-228
1.54e-45
The catalytic domain of hexameric long form HisGL4; contains the type 2 periplasmic binding fold; Encoded by the hisG gene, the ATP phosphoribosyltransferase (ATP-PRT, EC 2.4.2.17) is the first enzyme in histidine biosynthetic pathway that catalyzes the condensation of ATP and PRPP (5'-phosphoribosyl 1'-pyrophosphate), and is regulated by a feedback inhibition from the product histidine. ATP-PRT has two distinct forms: a hexameric long form, HisGL, containing two catalytic domains and a C-terminal regulatory domain; and a hetero-octomeric short form, HisGs, without the regulatory domain. HisGL is catalytically competent, but the hetero-octameric HisGs requires the second subunit HisZ, a paralog to the catalytic domain of functional histidyl-tRNA synthetases (HisRSs), for the enzyme activity. This catalytic domain belongs to the type 2 periplasmic binding fold protein superfamily (PBP2). The PBP2 proteins are typically comprised of two globular subdomains connected by a flexible hinge and bind their ligand in the cleft between these domains in a manner resembling a Venus flytrap. The majority of PBP2 proteins function in the uptake of small soluble substrates in eubacteria and archaea.
Pssm-ID: 270312 Cd Length: 207 Bit Score: 153.24 E-value: 1.54e-45
The catalytic domain of ATP phosphoribosyltransferase contains the type 2 periplasmic ...
10-228
1.31e-43
The catalytic domain of ATP phosphoribosyltransferase contains the type 2 periplasmic substrate-binding fold; Encoded by the hisG gene, the ATP phosphoribosyltransferase (ATP-PRT, EC 2.4.2.17) is the first enzyme in histidine biosynthetic pathway that catalyzes the condensation of ATP and PRPP (5'-phosphoribosyl 1'-pyrophosphate), and is regulated by a feedback inhibition from the product histidine. ATP-PRT has two distinct forms: a hexameric long form, HisGL, containing two catalytic domains and a C-terminal regulatory domain; and a hetero-octomeric short form, HisGs, without the regulatory domain. HisGL is catalytically competent, but the hetero-octameric HisGs requires the second subunit HisZ, a paralog to the catalytic domain of functional histidyl-tRNA synthetases (HisRSs), for the enzyme activity. This catalytic domain belongs to the type 2 periplasmic binding fold protein superfamily (PBP2). The PBP2 proteins are typically comprised of two globular subdomains connected by a flexible hinge and bind their ligand in the cleft between these domains in a manner resembling a Venus flytrap. The majority of PBP2 proteins function in the uptake of small soluble substrates in eubacteria and archaea.
Pssm-ID: 270243 Cd Length: 208 Bit Score: 148.37 E-value: 1.31e-43
The catalytic domain of hexameric long form HisGL3; contains the type 2 periplasmic binding ...
13-228
8.94e-40
The catalytic domain of hexameric long form HisGL3; contains the type 2 periplasmic binding protein fold; Encoded by the hisG gene, the ATP phosphoribosyltransferase (ATP-PRT, EC 2.4.2.17) is the first enzyme in histidine biosynthetic pathway that catalyzes the condensation of ATP and PRPP (5'-phosphoribosyl 1'-pyrophosphate), and is regulated by a feedback inhibition from the product histidine. ATP-PRT has two distinct forms: a hexameric long form, HisGL, containing two catalytic domains and a C-terminal regulatory domain; and a hetero-octomeric short form, HisGs, without the regulatory domain. HisGL is catalytically competent, but the hetero-octameric HisGs requires the second subunit HisZ, a paralog to the catalytic domain of functional histidyl-tRNA synthetases (HisRSs), for the enzyme activity. This catalytic domain belongs to the type 2 periplasmic binding fold protein superfamily (PBP2). The PBP2 proteins are typically comprised of two globular subdomains connected by a flexible hinge and bind their ligand in the cleft between these domains in a manner resembling a Venus flytrap. The majority of PBP2 proteins function in the uptake of small soluble substrates in eubacteria and archaea.
Pssm-ID: 270311 Cd Length: 220 Bit Score: 138.51 E-value: 8.94e-40
The catalytic domain of hetero-octomeric short form HisGs; contains the type 2 periplasmic ...
11-228
9.43e-34
The catalytic domain of hetero-octomeric short form HisGs; contains the type 2 periplasmic binding protein fold; Encoded by the hisG gene, the ATP phosphoribosyltransferase (ATP-PRT, EC 2.4.2.17) is the first enzyme in histidine biosynthetic pathway that catalyzes the condensation of ATP and PRPP (5'-phosphoribosyl 1'-pyrophosphate), and is regulated by a feedback inhibition from the product histidine. ATP-PRT has two distinct forms: a hexameric long form, HisGL, containing two catalytic domains and a C-terminal regulatory domain; and a hetero-octomeric short form, HisGs, without the regulatory domain. HisGL is catalytically competent, but the hetero-octameric HisGs requires the second subunit HisZ, a paralog to the catalytic domain of functional histidyl-tRNA synthetases (HisRSs), for the enzyme activity. This catalytic domain belongs to the type 2 periplasmic binding fold protein superfamily (PBP2). The PBP2 proteins are typically comprised of two globular subdomains connected by a flexible hinge and bind their ligand in the cleft between these domains in a manner resembling a Venus flytrap. The majority of PBP2 proteins function in the uptake of small soluble substrates in eubacteria and archaea.
Pssm-ID: 270313 Cd Length: 205 Bit Score: 122.64 E-value: 9.43e-34
The catalytic domain of hexameric long form HisGL1; contains the type 2 periplasmic binding ...
11-228
4.31e-33
The catalytic domain of hexameric long form HisGL1; contains the type 2 periplasmic binding protein fold; Encoded by the hisG gene, the ATP phosphoribosyltransferase (ATP-PRT, EC 2.4.2.17) is the first enzyme in histidine biosynthetic pathway that catalyzes the condensation of ATP and PRPP (5'-phosphoribosyl 1'-pyrophosphate), and is regulated by a feedback inhibition from the product histidine. ATP-PRT has two distinct forms: a hexameric long form, HisGL, containing two catalytic domains and a C-terminal regulatory domain; and a hetero-octomeric short form, HisGs, without the regulatory domain. HisGL is catalytically competent, but the hetero-octameric HisGs requires the second subunit HisZ, a paralog to the catalytic domain of functional histidyl-tRNA synthetases (HisRSs), for the enzyme activity. This catalytic domain belongs to the type 2 periplasmic binding fold protein superfamily (PBP2). The PBP2 proteins are typically comprised of two globular subdomains connected by a flexible hinge and bind their ligand in the cleft between these domains in a manner resembling a Venus flytrap. The majority of PBP2 proteins function in the uptake of small soluble substrates in eubacteria and archaea.
Pssm-ID: 270309 Cd Length: 204 Bit Score: 120.96 E-value: 4.31e-33
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
