SufD family Fe-S cluster assembly protein such as Bacillus subtilis SufD, which is part of the complex that acts synergistically with SufE to stimulate the cysteine desulfurase activity of SufS, and contributes to the assembly or repair of oxygen-labile iron-sulfur clusters under oxidative stress
FeS assembly protein SufD; This protein, SufD, forms a cytosolic complex SufBCD. This complex ...
79-345
2.17e-72
FeS assembly protein SufD; This protein, SufD, forms a cytosolic complex SufBCD. This complex enhances the cysteine desulfurase of SufSE. The system, together with SufA, is believed to act in iron-sulfur cluster formation during oxidative stress. SufB and SufD are homologous. Note that SufC belongs to the family of ABC transporter ATP binding proteins, so this protein, encoded by an adjacent gene, has often been annotated as a transporter component. [Biosynthesis of cofactors, prosthetic groups, and carriers, Other]
:
Pssm-ID: 273908 Cd Length: 275 Bit Score: 226.34 E-value: 2.17e-72
FeS assembly protein SufD; This protein, SufD, forms a cytosolic complex SufBCD. This complex ...
79-345
2.17e-72
FeS assembly protein SufD; This protein, SufD, forms a cytosolic complex SufBCD. This complex enhances the cysteine desulfurase of SufSE. The system, together with SufA, is believed to act in iron-sulfur cluster formation during oxidative stress. SufB and SufD are homologous. Note that SufC belongs to the family of ABC transporter ATP binding proteins, so this protein, encoded by an adjacent gene, has often been annotated as a transporter component. [Biosynthesis of cofactors, prosthetic groups, and carriers, Other]
Pssm-ID: 273908 Cd Length: 275 Bit Score: 226.34 E-value: 2.17e-72
SUF system FeS cluster assembly, SufBD; Iron-sulphur (FeS) clusters are important cofactors ...
105-328
3.05e-70
SUF system FeS cluster assembly, SufBD; Iron-sulphur (FeS) clusters are important cofactors for numerous proteins involved in electron transfer, in redox and non-redox catalysis, in gene regulation, and as sensors of oxygen and iron. These functions depend on the various FeS cluster prosthetic groups, the most common being [2Fe-2S] and [4Fe-4S]. FeS cluster assembly is a complex process involving the mobilization of Fe and S atoms from storage sources, their assembly into [Fe-S] form, their transport to specific cellular locations, and their transfer to recipient apoproteins. So far, three FeS assembly machineries have been identified, which are capable of synthesising all types of [Fe-S] clusters: ISC (iron-sulphur cluster), SUF (sulphur assimilation), and NIF (nitrogen fixation) systems. The SUF system is an alternative pathway to the ISC system that operates under iron starvation and oxidative stress. It is found in eubacteria, archaea and eukaryotes (plastids). The SUF system is encoded by the suf operon (sufABCDSE), and the six encoded proteins are arranged into two complexes (SufSE and SufBCD) and one protein (SufA). SufS is a pyridoxal-phosphate (PLP) protein displaying cysteine desulphurase activity. SufE acts as a scaffold protein that accepts S from SufS and donates it to SufA. SufC is an ATPase with an unorthodox ATP-binding cassette (ABC)-like component. SufA is homologous to IscA, acting as a scaffold protein in which Fe and S atoms are assembled into [FeS] cluster forms, which can then easily be transferred to apoproteins targets. This entry represents SufB and SufD proteins, which are homologous, and form part of the SufBCD complex in the SUF system. SufB accepts sulfur transferred from SufE, whereas SufD may play a role in iron acquisition.
Pssm-ID: 460219 [Multi-domain] Cd Length: 218 Bit Score: 218.86 E-value: 3.05e-70
FeS assembly protein SufD; This protein, SufD, forms a cytosolic complex SufBCD. This complex ...
79-345
2.17e-72
FeS assembly protein SufD; This protein, SufD, forms a cytosolic complex SufBCD. This complex enhances the cysteine desulfurase of SufSE. The system, together with SufA, is believed to act in iron-sulfur cluster formation during oxidative stress. SufB and SufD are homologous. Note that SufC belongs to the family of ABC transporter ATP binding proteins, so this protein, encoded by an adjacent gene, has often been annotated as a transporter component. [Biosynthesis of cofactors, prosthetic groups, and carriers, Other]
Pssm-ID: 273908 Cd Length: 275 Bit Score: 226.34 E-value: 2.17e-72
SUF system FeS cluster assembly, SufBD; Iron-sulphur (FeS) clusters are important cofactors ...
105-328
3.05e-70
SUF system FeS cluster assembly, SufBD; Iron-sulphur (FeS) clusters are important cofactors for numerous proteins involved in electron transfer, in redox and non-redox catalysis, in gene regulation, and as sensors of oxygen and iron. These functions depend on the various FeS cluster prosthetic groups, the most common being [2Fe-2S] and [4Fe-4S]. FeS cluster assembly is a complex process involving the mobilization of Fe and S atoms from storage sources, their assembly into [Fe-S] form, their transport to specific cellular locations, and their transfer to recipient apoproteins. So far, three FeS assembly machineries have been identified, which are capable of synthesising all types of [Fe-S] clusters: ISC (iron-sulphur cluster), SUF (sulphur assimilation), and NIF (nitrogen fixation) systems. The SUF system is an alternative pathway to the ISC system that operates under iron starvation and oxidative stress. It is found in eubacteria, archaea and eukaryotes (plastids). The SUF system is encoded by the suf operon (sufABCDSE), and the six encoded proteins are arranged into two complexes (SufSE and SufBCD) and one protein (SufA). SufS is a pyridoxal-phosphate (PLP) protein displaying cysteine desulphurase activity. SufE acts as a scaffold protein that accepts S from SufS and donates it to SufA. SufC is an ATPase with an unorthodox ATP-binding cassette (ABC)-like component. SufA is homologous to IscA, acting as a scaffold protein in which Fe and S atoms are assembled into [FeS] cluster forms, which can then easily be transferred to apoproteins targets. This entry represents SufB and SufD proteins, which are homologous, and form part of the SufBCD complex in the SUF system. SufB accepts sulfur transferred from SufE, whereas SufD may play a role in iron acquisition.
Pssm-ID: 460219 [Multi-domain] Cd Length: 218 Bit Score: 218.86 E-value: 3.05e-70
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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The thumbnail image, if present, provides an approximate view of the feature's location in 3 dimensions.
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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
(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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