Macromolecule Annotations for the Entities in PDB 1HT1

Domain Annotation: SCOP Classification SCOP Database (version: 1.75) Homepage

Chains Domain Info Class Fold Superfamily Family Domain Species
A d1ht1a_ Alpha and beta proteins (a+b) Ntn hydrolase-like N-terminal nucleophile aminohydrolases (Ntn hydrolases) Proteasome subunits HslV (ClpQ) protease Escherichia coli [TaxId: 562]
B d1ht1b_ Alpha and beta proteins (a+b) Ntn hydrolase-like N-terminal nucleophile aminohydrolases (Ntn hydrolases) Proteasome subunits HslV (ClpQ) protease Escherichia coli [TaxId: 562]
C d1ht1c_ Alpha and beta proteins (a+b) Ntn hydrolase-like N-terminal nucleophile aminohydrolases (Ntn hydrolases) Proteasome subunits HslV (ClpQ) protease Escherichia coli [TaxId: 562]
D d1ht1d_ Alpha and beta proteins (a+b) Ntn hydrolase-like N-terminal nucleophile aminohydrolases (Ntn hydrolases) Proteasome subunits HslV (ClpQ) protease Escherichia coli [TaxId: 562]
E d1ht1e_ 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 [TaxId: 562]
F d1ht1f_ 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 [TaxId: 562]
G d1ht1g_ 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 [TaxId: 562]
I d1ht1i_ 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 [TaxId: 562]
V d1ht1v_ Alpha and beta proteins (a+b) Ntn hydrolase-like N-terminal nucleophile aminohydrolases (Ntn hydrolases) Proteasome subunits HslV (ClpQ) protease Escherichia coli [TaxId: 562]
X d1ht1x_ Alpha and beta proteins (a+b) Ntn hydrolase-like N-terminal nucleophile aminohydrolases (Ntn hydrolases) Proteasome subunits HslV (ClpQ) protease Escherichia coli [TaxId: 562]
Y d1ht1y_ Alpha and beta proteins (a+b) Ntn hydrolase-like N-terminal nucleophile aminohydrolases (Ntn hydrolases) Proteasome subunits HslV (ClpQ) protease Escherichia coli [TaxId: 562]
Z d1ht1z_ Alpha and beta proteins (a+b) Ntn hydrolase-like N-terminal nucleophile aminohydrolases (Ntn hydrolases) Proteasome subunits HslV (ClpQ) protease Escherichia coli [TaxId: 562]

Domain Annotation: CATH CATH Database (version 4.0.0) Homepage

Chains Domain Class Architecture Topology Homology
A 1ht1A00 Alpha Beta 4-Layer Sandwich Glutamine Phosphoribosylpyrophosphate, subunit 1, domain 1 Glutamine Phosphoribosylpyrophosphate, subunit 1, domain 1
B 1ht1B00 Alpha Beta 4-Layer Sandwich Glutamine Phosphoribosylpyrophosphate, subunit 1, domain 1 Glutamine Phosphoribosylpyrophosphate, subunit 1, domain 1
C 1ht1C00 Alpha Beta 4-Layer Sandwich Glutamine Phosphoribosylpyrophosphate, subunit 1, domain 1 Glutamine Phosphoribosylpyrophosphate, subunit 1, domain 1
D 1ht1D00 Alpha Beta 4-Layer Sandwich Glutamine Phosphoribosylpyrophosphate, subunit 1, domain 1 Glutamine Phosphoribosylpyrophosphate, subunit 1, domain 1
E1 1ht1E01 Alpha Beta 3-Layer(aba) Sandwich Rossmann fold P-loop containing nucleotide triphosphate hydrolases
E2 1ht1E02 Mainly Alpha Orthogonal Bundle Helicase, Ruva Protein; domain 3 DNA helicase RuvA subunit, C-terminal domain
E3 1ht1E03 Mainly Alpha Orthogonal Bundle Helicase, Ruva Protein; domain 3
F1 1ht1F01 Alpha Beta 3-Layer(aba) Sandwich Rossmann fold P-loop containing nucleotide triphosphate hydrolases
F2 1ht1F02 Mainly Alpha Orthogonal Bundle Helicase, Ruva Protein; domain 3 DNA helicase RuvA subunit, C-terminal domain
F3 1ht1F03 Mainly Alpha Orthogonal Bundle Helicase, Ruva Protein; domain 3
G1 1ht1G01 Alpha Beta 3-Layer(aba) Sandwich Rossmann fold P-loop containing nucleotide triphosphate hydrolases
G2 1ht1G02 Mainly Alpha Orthogonal Bundle Helicase, Ruva Protein; domain 3 DNA helicase RuvA subunit, C-terminal domain
G3 1ht1G03 Mainly Alpha Orthogonal Bundle Helicase, Ruva Protein; domain 3
I1 1ht1I01 Alpha Beta 3-Layer(aba) Sandwich Rossmann fold P-loop containing nucleotide triphosphate hydrolases
I2 1ht1I02 Mainly Alpha Orthogonal Bundle Helicase, Ruva Protein; domain 3 DNA helicase RuvA subunit, C-terminal domain
I3 1ht1I03 Mainly Alpha Orthogonal Bundle Helicase, Ruva Protein; domain 3
V 1ht1V00 Alpha Beta 4-Layer Sandwich Glutamine Phosphoribosylpyrophosphate, subunit 1, domain 1 Glutamine Phosphoribosylpyrophosphate, subunit 1, domain 1
X 1ht1X00 Alpha Beta 4-Layer Sandwich Glutamine Phosphoribosylpyrophosphate, subunit 1, domain 1 Glutamine Phosphoribosylpyrophosphate, subunit 1, domain 1
Y 1ht1Y00 Alpha Beta 4-Layer Sandwich Glutamine Phosphoribosylpyrophosphate, subunit 1, domain 1 Glutamine Phosphoribosylpyrophosphate, subunit 1, domain 1
Z 1ht1Z00 Alpha Beta 4-Layer Sandwich Glutamine Phosphoribosylpyrophosphate, subunit 1, domain 1 Glutamine Phosphoribosylpyrophosphate, subunit 1, domain 1

Protein Family Annotation Pfam Database Homepage

Chains Pfam Accession Pfam Identifier Pfam Description Type Source
E PF00004 AAA ATPase family associated with various cellular activities (AAA) Family
E PF10431 ClpB_D2-small C-terminal, D2-small domain, of ClpB protein Domain This is the C-terminal domain of ClpB protein, referred to as the D2-small domain, and is a mixed alpha-beta structure. Compared with the D1-small domain (included in AAA, Pfam:PF00004) it lacks the long coiled-coil insertion, and instead of helix C4 contains a beta-strand (e3) that is part of a three stranded beta-pleated sheet. In Thermophilus the whole protein forms a hexamer with the D1-small and D2-small domains located on the outside of the hexamer, with the long coiled-coil being exposed on the surface. The D2-small domain is essential for oligomerisation, forming a tight interface with the D2-large domain of a neighbouring subunit and thereby providing enough binding energy to stabilise the functional assembly [1]. The domain is associated with two Clp_N, Pfam:PF02861, at the N-terminus as well as AAA, Pfam:PF00004 and AAA_2, Pfam:PF07724. PFAM PF10431
E PF07724 AAA_2 AAA domain (Cdc48 subfamily) Domain This Pfam entry includes some of the AAA proteins not detected by the Pfam:PF00004 model. PFAM PF07724
A PF00227 Proteasome Proteasome subunit Domain 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]. PFAM PF00227

Protein Modification Annotation

Type PDB Residue Nr. Description