Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage

ChainsDomain InfoClassFoldSuperfamilyFamilyDomainSpeciesProvenance Source (Version)
A [auth C]d1ht1c_ Alpha and beta proteins (a+b) Ntn hydrolase-like N-terminal nucleophile aminohydrolases (Ntn hydrolases) Proteasome subunits HslV (ClpQ) protease (Escherichia coli BL21(DE3) ) [TaxId: 469008 ], SCOPe (2.08)
B [auth D]d1ht1d_ Alpha and beta proteins (a+b) Ntn hydrolase-like N-terminal nucleophile aminohydrolases (Ntn hydrolases) Proteasome subunits HslV (ClpQ) protease (Escherichia coli BL21(DE3) ) [TaxId: 469008 ], SCOPe (2.08)
C [auth V]d1ht1v_ Alpha and beta proteins (a+b) Ntn hydrolase-like N-terminal nucleophile aminohydrolases (Ntn hydrolases) Proteasome subunits HslV (ClpQ) protease (Escherichia coli BL21(DE3) ) [TaxId: 469008 ], SCOPe (2.08)
D [auth X]d1ht1x_ Alpha and beta proteins (a+b) Ntn hydrolase-like N-terminal nucleophile aminohydrolases (Ntn hydrolases) Proteasome subunits HslV (ClpQ) protease (Escherichia coli BL21(DE3) ) [TaxId: 469008 ], SCOPe (2.08)
E [auth A]d1ht1a_ Alpha and beta proteins (a+b) Ntn hydrolase-like N-terminal nucleophile aminohydrolases (Ntn hydrolases) Proteasome subunits HslV (ClpQ) protease (Escherichia coli BL21(DE3) ) [TaxId: 469008 ], SCOPe (2.08)
F [auth B]d1ht1b_ Alpha and beta proteins (a+b) Ntn hydrolase-like N-terminal nucleophile aminohydrolases (Ntn hydrolases) Proteasome subunits HslV (ClpQ) protease (Escherichia coli BL21(DE3) ) [TaxId: 469008 ], SCOPe (2.08)
G [auth Z]d1ht1z_ Alpha and beta proteins (a+b) Ntn hydrolase-like N-terminal nucleophile aminohydrolases (Ntn hydrolases) Proteasome subunits HslV (ClpQ) protease (Escherichia coli BL21(DE3) ) [TaxId: 469008 ], SCOPe (2.08)
H [auth Y]d1ht1y_ Alpha and beta proteins (a+b) Ntn hydrolase-like N-terminal nucleophile aminohydrolases (Ntn hydrolases) Proteasome subunits HslV (ClpQ) protease (Escherichia coli BL21(DE3) ) [TaxId: 469008 ], SCOPe (2.08)
I [auth E]d1ht1e1 Alpha and beta proteins (a/b) P-loop containing nucleoside triphosphate hydrolases P-loop containing nucleoside triphosphate hydrolases Extended AAA-ATPase domain HslU (Escherichia coli BL21(DE3) ) [TaxId: 469008 ], SCOPe (2.08)
I [auth E]d1ht1e2 Artifacts Tags Tags Tags N-terminal Tags (Escherichia coli BL21(DE3) ) [TaxId: 469008 ], SCOPe (2.08)
J [auth F]d1ht1f1 Alpha and beta proteins (a/b) P-loop containing nucleoside triphosphate hydrolases P-loop containing nucleoside triphosphate hydrolases Extended AAA-ATPase domain HslU (Escherichia coli BL21(DE3) ) [TaxId: 469008 ], SCOPe (2.08)
J [auth F]d1ht1f2 Artifacts Tags Tags Tags N-terminal Tags (Escherichia coli BL21(DE3) ) [TaxId: 469008 ], SCOPe (2.08)
K [auth G]d1ht1g1 Alpha and beta proteins (a/b) P-loop containing nucleoside triphosphate hydrolases P-loop containing nucleoside triphosphate hydrolases Extended AAA-ATPase domain HslU (Escherichia coli BL21(DE3) ) [TaxId: 469008 ], SCOPe (2.08)
K [auth G]d1ht1g2 Artifacts Tags Tags Tags N-terminal Tags (Escherichia coli BL21(DE3) ) [TaxId: 469008 ], SCOPe (2.08)
L [auth I]d1ht1i1 Alpha and beta proteins (a/b) P-loop containing nucleoside triphosphate hydrolases P-loop containing nucleoside triphosphate hydrolases Extended AAA-ATPase domain HslU (Escherichia coli BL21(DE3) ) [TaxId: 469008 ], SCOPe (2.08)
L [auth I]d1ht1i2 Artifacts Tags Tags Tags N-terminal Tags (Escherichia coli BL21(DE3) ) [TaxId: 469008 ], SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

ChainsTypeFamily Name Domain Identifier Family IdentifierProvenance Source (Version)
A [auth C]SCOP2B SuperfamilyClass II glutamine amidotransferases8036886 3000131 SCOP2B (2022-06-29)
B [auth D]SCOP2B SuperfamilyClass II glutamine amidotransferases8036886 3000131 SCOP2B (2022-06-29)
C [auth V]SCOP2B SuperfamilyClass II glutamine amidotransferases8036886 3000131 SCOP2B (2022-06-29)
D [auth X]SCOP2B SuperfamilyClass II glutamine amidotransferases8036886 3000131 SCOP2B (2022-06-29)
E [auth A]SCOP2B SuperfamilyClass II glutamine amidotransferases8036886 3000131 SCOP2B (2022-06-29)
F [auth B]SCOP2B SuperfamilyClass II glutamine amidotransferases8036886 3000131 SCOP2B (2022-06-29)
G [auth Z]SCOP2B SuperfamilyClass II glutamine amidotransferases8036886 3000131 SCOP2B (2022-06-29)
H [auth Y]SCOP2B SuperfamilyClass II glutamine amidotransferases8036886 3000131 SCOP2B (2022-06-29)
I [auth E]SCOP2B SuperfamilyRecA-like P-loop NTPases8044319 3002019 SCOP2B (2022-06-29)
J [auth F]SCOP2B SuperfamilyRecA-like P-loop NTPases8044319 3002019 SCOP2B (2022-06-29)
K [auth G]SCOP2B SuperfamilyRecA-like P-loop NTPases8044319 3002019 SCOP2B (2022-06-29)
L [auth I]SCOP2B SuperfamilyRecA-like P-loop NTPases8044319 3002019 SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

ChainsFamily NameDomain Identifier ArchitecturePossible HomologyHomologyTopologyFamilyProvenance Source (Version)
A [auth C]Proteasomee1ht1C1 A: a+b four layersX: Ntn/PP2CH: NtnT: Proteasome subunitsF: ProteasomeECOD (1.6)
B [auth D]Proteasomee1ht1D1 A: a+b four layersX: Ntn/PP2CH: NtnT: Proteasome subunitsF: ProteasomeECOD (1.6)
C [auth V]Proteasomee1ht1V1 A: a+b four layersX: Ntn/PP2CH: NtnT: Proteasome subunitsF: ProteasomeECOD (1.6)
D [auth X]Proteasomee1ht1X1 A: a+b four layersX: Ntn/PP2CH: NtnT: Proteasome subunitsF: ProteasomeECOD (1.6)
E [auth A]Proteasomee1ht1A1 A: a+b four layersX: Ntn/PP2CH: NtnT: Proteasome subunitsF: ProteasomeECOD (1.6)
F [auth B]Proteasomee1ht1B1 A: a+b four layersX: Ntn/PP2CH: NtnT: Proteasome subunitsF: ProteasomeECOD (1.6)
G [auth Z]Proteasomee1ht1Z1 A: a+b four layersX: Ntn/PP2CH: NtnT: Proteasome subunitsF: ProteasomeECOD (1.6)
H [auth Y]Proteasomee1ht1Y1 A: a+b four layersX: Ntn/PP2CH: NtnT: Proteasome subunitsF: ProteasomeECOD (1.6)
I [auth E]ClpB_D2-smalle1ht1E2 A: alpha arraysX: Histone-likeH: Histone-relatedT: AAA+ ATPase lid domainF: ClpB_D2-smallECOD (1.6)
I [auth E]Sigma54_activate1ht1E1 A: a/b three-layered sandwichesX: P-loop domains-likeH: P-loop domains-relatedT: P-loop containing nucleoside triphosphate hydrolasesF: Sigma54_activatECOD (1.6)
J [auth F]ClpB_D2-smalle1ht1F2 A: alpha arraysX: Histone-likeH: Histone-relatedT: AAA+ ATPase lid domainF: ClpB_D2-smallECOD (1.6)
J [auth F]Sigma54_activate1ht1F1 A: a/b three-layered sandwichesX: P-loop domains-likeH: P-loop domains-relatedT: P-loop containing nucleoside triphosphate hydrolasesF: Sigma54_activatECOD (1.6)
K [auth G]ClpB_D2-smalle1ht1G2 A: alpha arraysX: Histone-likeH: Histone-relatedT: AAA+ ATPase lid domainF: ClpB_D2-smallECOD (1.6)
K [auth G]Sigma54_activate1ht1G1 A: a/b three-layered sandwichesX: P-loop domains-likeH: P-loop domains-relatedT: P-loop containing nucleoside triphosphate hydrolasesF: Sigma54_activatECOD (1.6)
L [auth I]ClpB_D2-smalle1ht1I2 A: alpha arraysX: Histone-likeH: Histone-relatedT: AAA+ ATPase lid domainF: ClpB_D2-smallECOD (1.6)
L [auth I]Sigma54_activate1ht1I1 A: a/b three-layered sandwichesX: P-loop domains-likeH: P-loop domains-relatedT: P-loop containing nucleoside triphosphate hydrolasesF: Sigma54_activatECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

ChainDomainClassArchitectureTopologyHomologyProvenance Source (Version)
A [auth C]3.60.20.10 Alpha Beta 4-Layer Sandwich Glutamine Phosphoribosylpyrophosphate, subunit 1, domain 1 Aminohydrolase, N-terminal nucleophile (Ntn) domainCATH (4.3.0)
B [auth D]3.60.20.10 Alpha Beta 4-Layer Sandwich Glutamine Phosphoribosylpyrophosphate, subunit 1, domain 1 Aminohydrolase, N-terminal nucleophile (Ntn) domainCATH (4.3.0)
C [auth V]3.60.20.10 Alpha Beta 4-Layer Sandwich Glutamine Phosphoribosylpyrophosphate, subunit 1, domain 1 Aminohydrolase, N-terminal nucleophile (Ntn) domainCATH (4.3.0)
D [auth X]3.60.20.10 Alpha Beta 4-Layer Sandwich Glutamine Phosphoribosylpyrophosphate, subunit 1, domain 1 Aminohydrolase, N-terminal nucleophile (Ntn) domainCATH (4.3.0)
E [auth A]3.60.20.10 Alpha Beta 4-Layer Sandwich Glutamine Phosphoribosylpyrophosphate, subunit 1, domain 1 Aminohydrolase, N-terminal nucleophile (Ntn) domainCATH (4.3.0)
F [auth B]3.60.20.10 Alpha Beta 4-Layer Sandwich Glutamine Phosphoribosylpyrophosphate, subunit 1, domain 1 Aminohydrolase, N-terminal nucleophile (Ntn) domainCATH (4.3.0)
G [auth Z]3.60.20.10 Alpha Beta 4-Layer Sandwich Glutamine Phosphoribosylpyrophosphate, subunit 1, domain 1 Aminohydrolase, N-terminal nucleophile (Ntn) domainCATH (4.3.0)
H [auth Y]3.60.20.10 Alpha Beta 4-Layer Sandwich Glutamine Phosphoribosylpyrophosphate, subunit 1, domain 1 Aminohydrolase, N-terminal nucleophile (Ntn) domainCATH (4.3.0)
I [auth E]3.40.50.300 Alpha Beta 3-Layer(aba) Sandwich Rossmann fold P-loop containing nucleotide triphosphate hydrolasesCATH (4.3.0)
I [auth E]1.10.8.10 Mainly Alpha Orthogonal Bundle Helicase, Ruva Protein domain 3CATH (4.3.0)
I [auth E]1.10.8.60 Mainly Alpha Orthogonal Bundle Helicase, Ruva Protein domain 3CATH (4.3.0)
J [auth F]3.40.50.300 Alpha Beta 3-Layer(aba) Sandwich Rossmann fold P-loop containing nucleotide triphosphate hydrolasesCATH (4.3.0)
J [auth F]1.10.8.10 Mainly Alpha Orthogonal Bundle Helicase, Ruva Protein domain 3CATH (4.3.0)
J [auth F]1.10.8.60 Mainly Alpha Orthogonal Bundle Helicase, Ruva Protein domain 3CATH (4.3.0)
K [auth G]3.40.50.300 Alpha Beta 3-Layer(aba) Sandwich Rossmann fold P-loop containing nucleotide triphosphate hydrolasesCATH (4.3.0)
K [auth G]1.10.8.10 Mainly Alpha Orthogonal Bundle Helicase, Ruva Protein domain 3CATH (4.3.0)
K [auth G]1.10.8.60 Mainly Alpha Orthogonal Bundle Helicase, Ruva Protein domain 3CATH (4.3.0)
L [auth I]3.40.50.300 Alpha Beta 3-Layer(aba) Sandwich Rossmann fold P-loop containing nucleotide triphosphate hydrolasesCATH (4.3.0)
L [auth I]1.10.8.10 Mainly Alpha Orthogonal Bundle Helicase, Ruva Protein domain 3CATH (4.3.0)
L [auth I]1.10.8.60 Mainly Alpha Orthogonal Bundle Helicase, Ruva Protein domain 3CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

ChainsAccessionNameDescriptionCommentsSource
PF00227Proteasome subunit (Proteasome)Proteasome subunitThe proteasome is a multisubunit structure that degrades proteins. Protein degradation is an essential component of regulation because proteins can become misfolded, damaged, or unnecessary. Proteasomes and their homologues vary greatly in complexity ...The proteasome is a multisubunit structure that degrades proteins. Protein degradation is an essential component of regulation because proteins can become misfolded, damaged, or unnecessary. Proteasomes and their homologues vary greatly in complexity: from HslV (heat shock locus v), which is encoded by 1 gene in bacteria, to the eukaryotic 20S proteasome, which is encoded by more than 14 genes [1]. Recently evidence of two novel groups of bacterial proteasomes was proposed. The first is Anbu, which is sparsely distributed among cyanobacteria and proteobacteria [1]. The second is call beta-proteobacteria proteasome homologue (BPH) [1].
Domain
I [auth E],
J [auth F],
K [auth G],
L [auth I]
PF00004ATPase family associated with various cellular activities (AAA) (AAA)ATPase family associated with various cellular activities (AAA)AAA family proteins often perform chaperone-like functions that assist in the assembly, operation, or disassembly of protein complexes [2].Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

ChainsPolymerMolecular FunctionBiological ProcessCellular Component
HEAT SHOCK LOCUS HSLV
I [auth E],
J [auth F],
K [auth G],
L [auth I]
HEAT SHOCK LOCUS HSLU

Structure Motif Annotation: Mechanism and Catalytic Site Atlas M-CSA Database Homepage

ChainsEnzyme NameDescriptionCatalytic Residues
HslU---HslV peptidase  M-CSA #678

HslVU is an ATP-dependent prokaryotic proteasome. It is a homolog of the eukaryotic 26S proteasome. It is responsible for the degradation of a majority of proteins in the cell, including regulatory protein factors and abnormally folded proteins. HslVU has two protein components, HslV and HslU. HslV is a protease. By itself, HslV has a low catalytic activity. Its activity is enhanced greatly by the interaction with HslU to form HslVU complex. HslU consists of ATPase and chaperone activities. It belongs to the Hsp100/Clp family of molecular chaperones, which is a member of the extended AAA(ATPase associated with a variety of cellular activities) family. It was found that the degradation of polypeptides by HslVU has an ATP requirement. For at least one substrate, SulA protein, ATP hydrolysis is required for degradation. Though ATP hydrolysis does not seem to be mandatory.

Defined by 4 residues: THR:E-1 [auth A-1]LYS:E-33 [auth A-33]GLY:E-45 [auth A-45]SER:E-124 [auth A-124]
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