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2w7n

Crystal Structure of KorA Bound to Operator DNA: Insight into Repressor Cooperation in RP4 Gene Regulation

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

TRFB TRANSCRIPTIONAL REPRESSOR PROTEIN

ESCHERICHIA COLI

UniProt P03052

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein–DNA Homooligomer Protein 2 DNA 4 ;5'-D(*AP*AP*TP*GP*TP*TP*TP*AP*GP*CP *TP*AP*AP*AP*CP*AP*AP*G)-3' ; × 2 ;5'-D(*CP*BRUP*BRUP*GP*TP*TP*TP*AP*GP*CP*TP*AP *AP*AP*CP*AP*BRUP*T)-3' ; × 2 water × 6 Consistent with all polymers

Other States of the Same Protein in the Database

Monomer

None

Homodimer
2n5g 5ckt 5ckt

3 assemblies

Homotetramer

None

Other homooligomers

None

Heteromeric or nucleic-acid complex
2w7n 5clv 5clv 5clv 5clv 5cm3 8qa9

7 assemblies

View Construct and Data Evidence
UniProt name KORA2_ECOLX
Isoform —
PDB entities 1
Chains and sequence ranges Author chain A； PDBConstruct 1–101； UniProt 1–101 Author chain B； PDBConstruct 1–101； UniProt 1–101

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_id2w7n
Deposition date deposition_date2008-12-23
Structure title titleCrystal Structure of KorA Bound to Operator DNA: Insight into Repressor Cooperation in RP4 Gene Regulation
Keywords keywords;INCP, PLASMID, REPRESSOR, DNA-BINDING, TRANSCRIPTION/DNA, PROTEIN-DNA COMPLEX, TRANSCRIPTION FACTOR, HELIX-TURN-HELIX MOTIF, TRANSCRIPTION REGULATION, TRANSCRIPTION-DNA complex ;; TRANSCRIPTION/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.

2w7n__assembly_1__model_1

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

Download this curve (.dat)

2w7n__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.

2w7n__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）21.86 Å
Rg (electron density)21.43 Å
Total Rg22.16 Å
Atom count2211
Residues222
Excluded volume37033 ų
Maximum q0.500 Å⁻¹
Assembly Model Structure unit Oligomeric description Status CRYSOL Actions
1 1 2w7n__assembly_1__model_1 hexameric （6） 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_id2w7nA00
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology10 — Arc Repressor Mutant, subunit A
Homologous superfamily homologous superfamily2690 —
Domain ID domain_id2w7nB00
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology10 — Arc Repressor Mutant, subunit A
Homologous superfamily homologous superfamily2690 —
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7. Citations (1)