nuclear prelamin A recognition factor (NARF) family protein similar to NARF that evolved from an ancestral Fe-hydrogenase but does not produce hydrogen
Iron hydrogenase small subunit; Many microorganisms, such as methanogenic, acetogenic, ...
422-470
2.01e-17
Iron hydrogenase small subunit; Many microorganisms, such as methanogenic, acetogenic, nitrogen-fixing, photosynthetic, or sulphate-reducing bacteria, metabolise hydrogen. Hydrogen activation is mediated by a family of enzymes, termed hydrogenases, which either provide these organisms with reducing power from hydrogen oxidation, or act as electron sinks. There are two hydrogenases families that differ functionally from each other: NiFe hydrogenases tend to be more involved in hydrogen oxidation, while Iron-only FeFe (Fe only) hydrogenases in hydrogen production. Fe only hydrogenases show a common core structure, which contains a moiety, deeply buried inside the protein, with an Fe-Fe dinuclear centre, nonproteic bridging, terminal CO and CN- ligands attached to each of the iron atoms, and a dithio moiety, which also bridges the two iron atoms and has been tentatively assigned as a di(thiomethyl)amine. This common core also harbours three [4Fe-4S] iron-sulphur clusters. In FeFe hydrogenases, as in NiFe hydrogenases, the set of iron-sulphur clusters is dispersed regularly between the dinuclear Fe-Fe centre and the molecular surface. These clusters are distant by about 1.2 nm from each other but the [4Fe-4S] cluster closest to the dinuclear centre is covalently bound to one of the iron atoms though a thiolate bridging ligand. The moiety including the dinuclear centre, the thiolate bridging ligand, and the proximal [4Fe-4S] cluster is known as the H-cluster. A channel, lined with hydrophobic amino acid side chains, nearly connects the dinuclear centre and the molecular surface. Furthermore hydrogen-bonded water molecule sites have been identified at the interior and at the surface of the protein. The small subunit is comprised of alternating random coil and alpha helical structures that encompass the large subunit in a novel protein fold.
:
Pssm-ID: 214899 [Multi-domain] Cd Length: 52 Bit Score: 75.75 E-value: 2.01e-17
[FeFe] hydrogenase, group A; This model describes iron-only hydrogenases of anaerobic and ...
48-408
8.51e-68
[FeFe] hydrogenase, group A; This model describes iron-only hydrogenases of anaerobic and microaerophilic bacteria and protozoa. This model is narrower, and covers a longer stretch of sequence, than pfam02906. This family represents a division among families that belong to pfam02906, which also includes proteins such as nuclear prelamin A recognition factor in animals. Note that this family shows some heterogeneity in terms of periplasmic, cytosolic, or hydrogenosome location, NAD or NADP dependence, and overal protein protein length.
Pssm-ID: 274171 [Multi-domain] Cd Length: 374 Bit Score: 221.42 E-value: 8.51e-68
Iron hydrogenase small subunit; Many microorganisms, such as methanogenic, acetogenic, ...
422-470
2.01e-17
Iron hydrogenase small subunit; Many microorganisms, such as methanogenic, acetogenic, nitrogen-fixing, photosynthetic, or sulphate-reducing bacteria, metabolise hydrogen. Hydrogen activation is mediated by a family of enzymes, termed hydrogenases, which either provide these organisms with reducing power from hydrogen oxidation, or act as electron sinks. There are two hydrogenases families that differ functionally from each other: NiFe hydrogenases tend to be more involved in hydrogen oxidation, while Iron-only FeFe (Fe only) hydrogenases in hydrogen production. Fe only hydrogenases show a common core structure, which contains a moiety, deeply buried inside the protein, with an Fe-Fe dinuclear centre, nonproteic bridging, terminal CO and CN- ligands attached to each of the iron atoms, and a dithio moiety, which also bridges the two iron atoms and has been tentatively assigned as a di(thiomethyl)amine. This common core also harbours three [4Fe-4S] iron-sulphur clusters. In FeFe hydrogenases, as in NiFe hydrogenases, the set of iron-sulphur clusters is dispersed regularly between the dinuclear Fe-Fe centre and the molecular surface. These clusters are distant by about 1.2 nm from each other but the [4Fe-4S] cluster closest to the dinuclear centre is covalently bound to one of the iron atoms though a thiolate bridging ligand. The moiety including the dinuclear centre, the thiolate bridging ligand, and the proximal [4Fe-4S] cluster is known as the H-cluster. A channel, lined with hydrophobic amino acid side chains, nearly connects the dinuclear centre and the molecular surface. Furthermore hydrogen-bonded water molecule sites have been identified at the interior and at the surface of the protein. The small subunit is comprised of alternating random coil and alpha helical structures that encompass the large subunit in a novel protein fold.
Pssm-ID: 214899 [Multi-domain] Cd Length: 52 Bit Score: 75.75 E-value: 2.01e-17
Iron hydrogenase small subunit; This family represents the small subunit of the Fe-only ...
420-469
4.29e-13
Iron hydrogenase small subunit; This family represents the small subunit of the Fe-only hydrogenases EC:1.18.99.1. The subunit is comprised of alternating random coil and alpha helical structures that encompasses the large subunit in a novel protein fold.
Pssm-ID: 460511 [Multi-domain] Cd Length: 56 Bit Score: 63.67 E-value: 4.29e-13
FAD synthetase, N-terminal domain of the bifunctional enzyme; FAD synthetase_N. N-terminal ...
95-176
3.53e-04
FAD synthetase, N-terminal domain of the bifunctional enzyme; FAD synthetase_N. N-terminal domain of the bifunctional riboflavin biosynthesis protein riboflavin kinase/FAD synthetase. These enzymes have both ATP:riboflavin 5'-phosphotransferase and ATP:FMN-adenylyltransferase activities. The N-terminal domain is believed to play a role in the adenylylation reaction of FAD synthetases. The C-terminal domain is thought to have kinase activity. FAD synthetase is present among all kingdoms of life. However, the bifunctional enzyme is not found in mammals, which use separate enzymes for FMN and FAD formation.
Pssm-ID: 185679 [Multi-domain] Cd Length: 180 Bit Score: 41.37 E-value: 3.53e-04
[FeFe] hydrogenase, group A; This model describes iron-only hydrogenases of anaerobic and ...
48-408
8.51e-68
[FeFe] hydrogenase, group A; This model describes iron-only hydrogenases of anaerobic and microaerophilic bacteria and protozoa. This model is narrower, and covers a longer stretch of sequence, than pfam02906. This family represents a division among families that belong to pfam02906, which also includes proteins such as nuclear prelamin A recognition factor in animals. Note that this family shows some heterogeneity in terms of periplasmic, cytosolic, or hydrogenosome location, NAD or NADP dependence, and overal protein protein length.
Pssm-ID: 274171 [Multi-domain] Cd Length: 374 Bit Score: 221.42 E-value: 8.51e-68
Iron hydrogenase small subunit; Many microorganisms, such as methanogenic, acetogenic, ...
422-470
2.01e-17
Iron hydrogenase small subunit; Many microorganisms, such as methanogenic, acetogenic, nitrogen-fixing, photosynthetic, or sulphate-reducing bacteria, metabolise hydrogen. Hydrogen activation is mediated by a family of enzymes, termed hydrogenases, which either provide these organisms with reducing power from hydrogen oxidation, or act as electron sinks. There are two hydrogenases families that differ functionally from each other: NiFe hydrogenases tend to be more involved in hydrogen oxidation, while Iron-only FeFe (Fe only) hydrogenases in hydrogen production. Fe only hydrogenases show a common core structure, which contains a moiety, deeply buried inside the protein, with an Fe-Fe dinuclear centre, nonproteic bridging, terminal CO and CN- ligands attached to each of the iron atoms, and a dithio moiety, which also bridges the two iron atoms and has been tentatively assigned as a di(thiomethyl)amine. This common core also harbours three [4Fe-4S] iron-sulphur clusters. In FeFe hydrogenases, as in NiFe hydrogenases, the set of iron-sulphur clusters is dispersed regularly between the dinuclear Fe-Fe centre and the molecular surface. These clusters are distant by about 1.2 nm from each other but the [4Fe-4S] cluster closest to the dinuclear centre is covalently bound to one of the iron atoms though a thiolate bridging ligand. The moiety including the dinuclear centre, the thiolate bridging ligand, and the proximal [4Fe-4S] cluster is known as the H-cluster. A channel, lined with hydrophobic amino acid side chains, nearly connects the dinuclear centre and the molecular surface. Furthermore hydrogen-bonded water molecule sites have been identified at the interior and at the surface of the protein. The small subunit is comprised of alternating random coil and alpha helical structures that encompass the large subunit in a novel protein fold.
Pssm-ID: 214899 [Multi-domain] Cd Length: 52 Bit Score: 75.75 E-value: 2.01e-17
Iron hydrogenase small subunit; This family represents the small subunit of the Fe-only ...
420-469
4.29e-13
Iron hydrogenase small subunit; This family represents the small subunit of the Fe-only hydrogenases EC:1.18.99.1. The subunit is comprised of alternating random coil and alpha helical structures that encompasses the large subunit in a novel protein fold.
Pssm-ID: 460511 [Multi-domain] Cd Length: 56 Bit Score: 63.67 E-value: 4.29e-13
FAD synthetase, N-terminal domain of the bifunctional enzyme; FAD synthetase_N. N-terminal ...
95-176
3.53e-04
FAD synthetase, N-terminal domain of the bifunctional enzyme; FAD synthetase_N. N-terminal domain of the bifunctional riboflavin biosynthesis protein riboflavin kinase/FAD synthetase. These enzymes have both ATP:riboflavin 5'-phosphotransferase and ATP:FMN-adenylyltransferase activities. The N-terminal domain is believed to play a role in the adenylylation reaction of FAD synthetases. The C-terminal domain is thought to have kinase activity. FAD synthetase is present among all kingdoms of life. However, the bifunctional enzyme is not found in mammals, which use separate enzymes for FMN and FAD formation.
Pssm-ID: 185679 [Multi-domain] Cd Length: 180 Bit Score: 41.37 E-value: 3.53e-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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(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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