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4fth

Crystal Structure of NtrC4 DNA-binding domain bound to double-stranded DNA

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

Transcriptional regulator (NtrC family)

Aquifex aeolicus

UniProt O66551

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein–DNA Homooligomer Protein 2 DNA 2 5'-D(*AP*CP*TP*TP*GP*CP*AP*AP*AP*TP*TP*TP*GP*CP*AP*AP*AP*TP*GP*CP*AP*T)-3' × 1 5'-D(P*GP*AP*TP*GP*CP*AP*TP*TP*TP*GP*CP*AP*AP*AP*TP*TP*TP*GP*CP*AP*A)-3' × 1 water × 1 Consistent with all polymers

Other States of the Same Protein in the Database

Monomer
1zit

1 assemblies

Homodimer
2jrl 3dzd 3e7l 3e7l

4 assemblies

Homotetramer

None

Other homooligomers

None

Heteromeric or nucleic-acid complex
4fth

1 assemblies

View Construct and Data Evidence
UniProt name O66551_AQUAE
Isoform —
PDB entities 1
Chains and sequence ranges Author chain A； PDBConstruct 1–69； UniProt 374–442 Author chain B； PDBConstruct 1–69； UniProt 374–442

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_id4fth
Deposition date deposition_date2012-06-27
Structure title titleCrystal Structure of NtrC4 DNA-binding domain bound to double-stranded DNA
Keywords keywords;sigma-54, transcriptional activator, DNA-binding domain, NtrC, Fis, helix-turn-helix, DNA-binding, TRANSCRIPTION REGULATOR-DNA complex ;; TRANSCRIPTION REGULATOR/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.

4fth__assembly_1__model_1

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

Download this curve (.dat)

4fth__assembly_1__model_1 | I(q)

10-2 10-1 105 106 107 q (1/Angstrom) I(q)
100 plotted points; both axes use logarithmic scales.

4fth__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）22.31 Å
Rg (electron density)21.11 Å
Total Rg21.92 Å
Atom count1966
Residues171
Excluded volume32762 ų
Maximum q0.500 Å⁻¹
Assembly Model Structure unit Oligomeric description Status CRYSOL Actions
1 1 4fth__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 (4)

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6. Fold Classification (SCOP + CATH) 2 domains

CATH v4.4 (2 domains)

Domain ID domain_id4fthA00
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology10 — Arc Repressor Mutant, subunit A
Homologous superfamily homologous superfamily60 — Homeodomain-like
Domain ID domain_id4fthB00
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology10 — Arc Repressor Mutant, subunit A
Homologous superfamily homologous superfamily60 — Homeodomain-like
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7. Citations (1)