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1qhh

STRUCTURE OF DNA HELICASE WITH ADPNP

Method: X-RAY DIFFRACTION
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1. Protein Identity and Related Structures Protein Identity & Related Structures

PROTEIN (PCRA (SUBUNIT))

Geobacillus stearothermophilus

UniProt P56255

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein homooligomer Homooligomer Protein 4 ADENOSINE-5'-TRIPHOSPHATE × 1 water × 4 Consistent with protein count

Other States of the Same Protein in the Database

Monomer
1pjr 1qhg 5dma

3 assemblies

Homodimer

None

Homotetramer
1qhh

1 assemblies

Other homooligomers

None

Heteromeric or nucleic-acid complex
2pjr 3pjr

2 assemblies

View Construct and Data Evidence
UniProt name PCRA_BACST
Isoform —
PDB entities 1, 2, 3, 4
Chains and sequence ranges Author chain A； PDBConstruct 1–167； UniProt 1–167 Author chain B； PDBConstruct 1–273； UniProt 168–440 Author chain C； PDBConstruct 1–115； UniProt 441–555 Author chain D； PDBConstruct 1–169； UniProt 556–724

The page prioritizes protein identity, the current assembly, associated components, oligomeric state and cross-PDB links. Chain mapping and sequence ranges are retained as data evidence. Internal IDs, import timestamps and assembly operation expressions are maintenance fields and are not shown here.

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2. Structure Basics 2. Structure Basics

Entry ID entry_id1qhh
Deposition date deposition_date1999-05-14
Structure title titleSTRUCTURE OF DNA HELICASE WITH ADPNP
Keywords keywordsDNA REPAIR, DNA REPLICATION, SOS RESPONSE, HELICASE, ATP-BINDING, DNA-BINDING, HYDROLASE; HYDROLASE
Experimental Method methodX-RAY DIFFRACTION
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3. Official assembly/model SAXS Official SAXS Profiles

This page reads only the latest assembly calculations. Every curve maps to an explicit PDB entry, official biological assembly and coordinate model.

1qhh__assembly_1__model_1

Assembly 1 · Model 1 · CRYSOL 4.1.3-1-20251215 (887e7ef)

Download this curve (.dat)

1qhh__assembly_1__model_1 | I(q)

10-2 10-1 106 107 q (1/Angstrom) I(q)
100 plotted points; both axes use logarithmic scales.

1qhh__assembly_1__model_1 | P(r) · Pending

The new assembly/model P(r) has not been calculated yet This placeholder does not display legacy data r (Angstrom) P(r)
P(r) will be calculated and displayed separately for the same assembly/model.
Rg（Guinier）28.54 Å
Rg (electron density)27.72 Å
Total Rg28.45 Å
Atom count5197
Residues623
Excluded volume90453 ų
Maximum q0.500 Å⁻¹
Assembly Model Structure unit Oligomeric description Status CRYSOL Actions
1 1 1qhh__assembly_1__model_1 tetrameric （4） Success 4.1.3-1-20251215 (887e7ef) View Download
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4. Crystallography and Experiment 4. Crystallography & Experiment

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5. Entities and Polymers Entities & Polymers (6)

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6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (1 domains)

Domain ID domain_idd1qhh.1
Class classc — Alpha and beta proteins (a/b)
Fold Fold foldc.37 — P-loop containing nucleoside triphosphate hydrolases
Superfamily Superfamily superfamilyc.37.1 — P-loop containing nucleoside triphosphate hydrolases
Family Family familyc.37.1.19 — Tandem AAA-ATPase domain

CATH v4.4 (3 domains)

Domain ID domain_id1qhhA00
Class class3 — Alpha Beta
Architecture architecture40 — 3-Layer(aba) Sandwich
Topology topology50 — Rossmann fold
Homologous superfamily homologous superfamily300 — P-loop containing nucleotide triphosphate hydrolases
Domain ID domain_id1qhhC00
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology486 — PCRA; domain 4
Homologous superfamily homologous superfamily10 — PCRA; domain 4
Domain ID domain_id1qhhD01
Class class3 — Alpha Beta
Architecture architecture30 — 2-Layer Sandwich
Topology topology160 — Double Stranded RNA Binding Domain
Homologous superfamily homologous superfamily800 —
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7. Citations (1)