TroA family protein; most TroA-like proteins are encoded by ABC-type operons and appear to function as periplasmic components of ABC transporters in metal ion uptake.
Helical backbone metal receptor (TroA-like domain). These proteins have been shown to function ...
54-313
9.64e-60
Helical backbone metal receptor (TroA-like domain). These proteins have been shown to function in the ABC transport of ferric siderophores and metal ions such as Mn2+, Fe3+, Cu2+ and/or Zn2+. Their ligand binding site is formed in the interface between two globular domains linked by a single helix. Many of these proteins also possess a low complexity region containing a metal-binding histidine-rich motif (repetitive HDH sequence). The TroA-like proteins differ in their fold and ligand-binding mechanism from the PBPI and PBPII proteins, but are structurally similar, however, to the beta-subunit of the nitrogenase molybdenum-iron protein MoFe. Most TroA-like proteins are encoded by ABC-type operons and appear to function as periplasmic components of ABC transporters in metal ion uptake.
The actual alignment was detected with superfamily member cd01020:
Pssm-ID: 469696 [Multi-domain] Cd Length: 264 Bit Score: 193.42 E-value: 9.64e-60
Metal binding protein TroA_b. These proteins are predicted to function as initial receptors ...
54-313
9.64e-60
Metal binding protein TroA_b. These proteins are predicted to function as initial receptors in ABC transport of metal ions. They belong to the TroA superfamily of helical backbone metal receptor proteins that share a distinct fold and ligand binding mechanism. A typical TroA protein is comprised of two globular subdomains connected by a single helix and can bind the metal ion in the cleft between these domains. In addition, these proteins sometimes have a low complexity region containing a metal-binding histidine-rich motif (repetitive HDH sequence).
Pssm-ID: 238502 [Multi-domain] Cd Length: 264 Bit Score: 193.42 E-value: 9.64e-60
Zinc-uptake complex component A periplasmic; ZnuA includes periplasmic solute binding proteins ...
56-263
4.39e-29
Zinc-uptake complex component A periplasmic; ZnuA includes periplasmic solute binding proteins such as TroA that interacts with an ATP-binding cassette transport system in Treponema pallidum. ZnuA is part of the bacterial zinc-uptake complex ZnuABC, whose components are the following families, ZinT, pfam09223, pfam00950, pfam00005, all of which are regulated by the transcription-regulator family FUR, pfam01475. ZinT acts as a Zn2+-buffering protein that delivers Zn2+ to ZnuA (TroA), a high-affinity zinc-uptake protein. In Gram-negative bacteria the ZnuABC transporter system ensures an adequate import of zinc in Zn2+-poor environments, such as those encountered by pathogens within the infected host.
Pssm-ID: 460151 [Multi-domain] Cd Length: 269 Bit Score: 113.03 E-value: 4.39e-29
Metal binding protein TroA_b. These proteins are predicted to function as initial receptors ...
54-313
9.64e-60
Metal binding protein TroA_b. These proteins are predicted to function as initial receptors in ABC transport of metal ions. They belong to the TroA superfamily of helical backbone metal receptor proteins that share a distinct fold and ligand binding mechanism. A typical TroA protein is comprised of two globular subdomains connected by a single helix and can bind the metal ion in the cleft between these domains. In addition, these proteins sometimes have a low complexity region containing a metal-binding histidine-rich motif (repetitive HDH sequence).
Pssm-ID: 238502 [Multi-domain] Cd Length: 264 Bit Score: 193.42 E-value: 9.64e-60
Zinc-uptake complex component A periplasmic; ZnuA includes periplasmic solute binding proteins ...
56-263
4.39e-29
Zinc-uptake complex component A periplasmic; ZnuA includes periplasmic solute binding proteins such as TroA that interacts with an ATP-binding cassette transport system in Treponema pallidum. ZnuA is part of the bacterial zinc-uptake complex ZnuABC, whose components are the following families, ZinT, pfam09223, pfam00950, pfam00005, all of which are regulated by the transcription-regulator family FUR, pfam01475. ZinT acts as a Zn2+-buffering protein that delivers Zn2+ to ZnuA (TroA), a high-affinity zinc-uptake protein. In Gram-negative bacteria the ZnuABC transporter system ensures an adequate import of zinc in Zn2+-poor environments, such as those encountered by pathogens within the infected host.
Pssm-ID: 460151 [Multi-domain] Cd Length: 269 Bit Score: 113.03 E-value: 4.39e-29
Metal binding protein PsaA. These proteins have been shown to function as initial receptors ...
31-195
1.88e-18
Metal binding protein PsaA. These proteins have been shown to function as initial receptors in ABC transport of Mn2+ and as surface adhesins in some eubacterial species. They belong to the TroA superfamily of periplasmic metal binding proteins that share a distinct fold and ligand binding mechanism. A typical TroA protein is comprised of two globular subdomains connected by a single helix and can bind the metal ion in the cleft between these domains. In addition, these proteins sometimes have a low complexity region containing a metal-binding histidine-rich motif (repetitive HDH sequence).
Pssm-ID: 238557 [Multi-domain] Cd Length: 287 Bit Score: 84.25 E-value: 1.88e-18
Helical backbone metal receptor (TroA-like domain). These proteins have been shown to function ...
55-152
8.18e-04
Helical backbone metal receptor (TroA-like domain). These proteins have been shown to function in the ABC transport of ferric siderophores and metal ions such as Mn2+, Fe3+, Cu2+ and/or Zn2+. Their ligand binding site is formed in the interface between two globular domains linked by a single helix. Many of these proteins also possess a low complexity region containing a metal-binding histidine-rich motif (repetitive HDH sequence). The TroA-like proteins differ in their fold and ligand-binding mechanism from the PBPI and PBPII proteins, but are structurally similar, however, to the beta-subunit of the nitrogenase molybdenum-iron protein MoFe. Most TroA-like proteins are encoded by ABC-type operons and appear to function as periplasmic components of ABC transporters in metal ion uptake.
Pssm-ID: 238347 [Multi-domain] Cd Length: 148 Bit Score: 39.46 E-value: 8.18e-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.
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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.
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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.
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(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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