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4esv

A New Twist on the Translocation Mechanism of Helicases from the Structure of DnaB with its Substrates

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

Replicative helicase

Geobacillus stearothermophilus

UniProt Q9X4C9

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein–DNA Homooligomer Protein 6 DNA 1 5'-D(P*TP*TP*TP*TP*TP*TP*TP*TP*TP*TP*TP*TP*TP*T)-3' × 1 2-(N-MORPHOLINO)-ETHANESULFONIC ACID × 2 CALCIUM ION × 11 GUANOSINE-5'-DIPHOSPHATE × 5 TETRAFLUOROALUMINATE ION × 5 water × 4 Consistent with all polymers
2 Protein–DNA Homooligomer Protein 6 DNA 1 5'-D(P*TP*TP*TP*TP*TP*TP*TP*TP*TP*TP*TP*TP*T)-3' × 1 2-(N-MORPHOLINO)-ETHANESULFONIC ACID × 2 CALCIUM ION × 3 GUANOSINE-5'-DIPHOSPHATE × 5 TETRAFLUOROALUMINATE ION × 5 water × 1 Consistent with all polymers

Other States of the Same Protein in the Database

Monomer

None

Homodimer

None

Homotetramer

None

Other homooligomers
2r6d 2r6e

2 assemblies

Heteromeric or nucleic-acid complex
2r6a 2r6c 4esv 4esv 4m4w

5 assemblies

View Construct and Data Evidence
UniProt name Q9X4C9_GEOSE
Isoform —
PDB entities 3
Chains and sequence ranges Author chain A； PDBConstruct 1–454； UniProt 1–454 Author chain B； PDBConstruct 1–454； UniProt 1–454 Author chain C； PDBConstruct 1–454； UniProt 1–454 Author chain D； PDBConstruct 1–454； UniProt 1–454 Author chain E； PDBConstruct 1–454； UniProt 1–454 Author chain F； PDBConstruct 1–454； UniProt 1–454 Author chain G； PDBConstruct 1–454； UniProt 1–454 Author chain H； PDBConstruct 1–445； UniProt 1–454 Author chain I； PDBConstruct 1–454； UniProt 1–454 Author chain J； PDBConstruct 1–454； UniProt 1–454 Author chain K； PDBConstruct 1–454； UniProt 1–454 Author chain L； PDBConstruct 1–454； UniProt 1–454

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_id4esv
Deposition date deposition_date2012-04-23
Structure title titleA New Twist on the Translocation Mechanism of Helicases from the Structure of DnaB with its Substrates
Keywords keywordsRecA Fold, Helicase, HYDROLASE-DNA complex; HYDROLASE/DNA
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.

4esv__assembly_2__model_1

Assembly 2 · Model 1 · CRYSOL 4.1.3-1-20251215 (887e7ef)

Download this curve (.dat)

4esv__assembly_2__model_1 | I(q)

10-2 10-1 106 107 108 109 q (1/Angstrom) I(q)
100 plotted points; both axes use logarithmic scales.

4esv__assembly_2__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）44.54 Å
Rg (electron density)44.29 Å
Total Rg44.48 Å
Atom count19989
Residues2533
Excluded volume354840 ų
Maximum q0.500 Å⁻¹
Assembly Model Structure unit Oligomeric description Status CRYSOL Actions
1 1 4esv__assembly_1__model_1 heptameric （7） Success 4.1.3-1-20251215 (887e7ef) View Download
2 1 4esv__assembly_2__model_1 heptameric （7） 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 (8)

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6. Fold Classification (SCOP + CATH) 24 domains

CATH v4.4 (24 domains)

Domain ID domain_id4esvA01
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology860 — DNAb Helicase; Chain A
Homologous superfamily homologous superfamily10 — DNAb Helicase; Chain A
Domain ID domain_id4esvA02
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_id4esvB01
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology860 — DNAb Helicase; Chain A
Homologous superfamily homologous superfamily10 — DNAb Helicase; Chain A
Domain ID domain_id4esvB02
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_id4esvC01
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology860 — DNAb Helicase; Chain A
Homologous superfamily homologous superfamily10 — DNAb Helicase; Chain A
Domain ID domain_id4esvC02
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_id4esvD01
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology860 — DNAb Helicase; Chain A
Homologous superfamily homologous superfamily10 — DNAb Helicase; Chain A
Domain ID domain_id4esvD02
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_id4esvE01
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology860 — DNAb Helicase; Chain A
Homologous superfamily homologous superfamily10 — DNAb Helicase; Chain A
Domain ID domain_id4esvE02
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_id4esvF01
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology860 — DNAb Helicase; Chain A
Homologous superfamily homologous superfamily10 — DNAb Helicase; Chain A
Domain ID domain_id4esvF02
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_id4esvG01
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology860 — DNAb Helicase; Chain A
Homologous superfamily homologous superfamily10 — DNAb Helicase; Chain A
Domain ID domain_id4esvG02
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_id4esvH01
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology860 — DNAb Helicase; Chain A
Homologous superfamily homologous superfamily10 — DNAb Helicase; Chain A
Domain ID domain_id4esvH02
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_id4esvI01
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology860 — DNAb Helicase; Chain A
Homologous superfamily homologous superfamily10 — DNAb Helicase; Chain A
Domain ID domain_id4esvI02
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_id4esvJ01
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology860 — DNAb Helicase; Chain A
Homologous superfamily homologous superfamily10 — DNAb Helicase; Chain A
Domain ID domain_id4esvJ02
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_id4esvK01
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology860 — DNAb Helicase; Chain A
Homologous superfamily homologous superfamily10 — DNAb Helicase; Chain A
Domain ID domain_id4esvK02
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_id4esvL01
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology860 — DNAb Helicase; Chain A
Homologous superfamily homologous superfamily10 — DNAb Helicase; Chain A
Domain ID domain_id4esvL02
Class class3 — Alpha Beta
Architecture architecture40 — 3-Layer(aba) Sandwich
Topology topology50 — Rossmann fold
Homologous superfamily homologous superfamily300 — P-loop containing nucleotide triphosphate hydrolases
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7. Citations (1)