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3gib

Crystal Structure of the Complex of the E. coli Hfq with Poly(A)

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

Protein hfq

Escherichia coli

UniProt P0A6X3

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein–RNA Homooligomer Protein 6 RNA 2 5'-R(P*AP*AP*AP*AP*AP*AP*AP*AP*A)-3' × 2 2-[N-CYCLOHEXYLAMINO]ETHANE SULFONIC ACID × 6 water × 8 Consistent with all polymers

Other States of the Same Protein in the Database

Monomer

None

Homodimer

None

Homotetramer

None

Other homooligomers
1hk9 2y90 2yht 2yht 3qhs 3qhs 3qo3 4jri 4jri 4jrk 4juv 4rcb

14 assemblies; showing the first 12

Heteromeric or nucleic-acid complex
3gib 3vu3 4v2s 9gu5 9h45

5 assemblies

View Construct and Data Evidence
UniProt name HFQ_ECOLI
Isoform —
PDB entities 1
Chains and sequence ranges Author chain A； PDBConstruct 1–68； UniProt 2–69 Author chain B； PDBConstruct 1–68； UniProt 2–69 Author chain C； PDBConstruct 1–68； UniProt 2–69

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_id3gib
Deposition date deposition_date2009-03-05
Structure title titleCrystal Structure of the Complex of the E. coli Hfq with Poly(A)
Keywords keywords;RNA binding protein, Hfq-RNA complex, degradosome component, DNA-binding, RNA-binding, Stress response, RNA binding protein-RNA COMPLEX ;; RNA binding protein/RNA
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.

3gib__assembly_1__model_1

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

Download this curve (.dat)

3gib__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.

3gib__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）23.06 Å
Rg (electron density)21.89 Å
Total Rg22.72 Å
Atom count3514
Residues400
Excluded volume62212 ų
Maximum q0.500 Å⁻¹
Assembly Model Structure unit Oligomeric description Status CRYSOL Actions
1 1 3gib__assembly_1__model_1 octameric （8） 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) 6 domains

SCOP 2.08 (3 domains)

Domain ID domain_idd3giba_
Class classb — All beta proteins
Fold Fold foldb.38 — Sm-like fold
Superfamily Superfamily superfamilyb.38.1 — Sm-like ribonucleoproteins
Family Family familyb.38.1.2 — Pleiotropic translational regulator Hfq
Domain ID domain_idd3gibb_
Class classb — All beta proteins
Fold Fold foldb.38 — Sm-like fold
Superfamily Superfamily superfamilyb.38.1 — Sm-like ribonucleoproteins
Family Family familyb.38.1.2 — Pleiotropic translational regulator Hfq
Domain ID domain_idd3gibc_
Class classb — All beta proteins
Fold Fold foldb.38 — Sm-like fold
Superfamily Superfamily superfamilyb.38.1 — Sm-like ribonucleoproteins
Family Family familyb.38.1.2 — Pleiotropic translational regulator Hfq

CATH v4.4 (3 domains)

Domain ID domain_id3gibA00
Class class2 — Mainly Beta
Architecture architecture30 — Roll
Topology topology30 — SH3 type barrels.
Homologous superfamily homologous superfamily100 —
Domain ID domain_id3gibB00
Class class2 — Mainly Beta
Architecture architecture30 — Roll
Topology topology30 — SH3 type barrels.
Homologous superfamily homologous superfamily100 —
Domain ID domain_id3gibC00
Class class2 — Mainly Beta
Architecture architecture30 — Roll
Topology topology30 — SH3 type barrels.
Homologous superfamily homologous superfamily100 —
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7. Citations (1)