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2i68

Cryo-EM based theoretical model structure of transmembrane domain of the multidrug-resistance antiporter from E. coli EmrE

Method: ELECTRON CRYSTALLOGRAPHY
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1. Protein Identity and Related Structures Protein Identity & Related Structures

Protein emrE

Escherichia coli

UniProt P23895

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein homooligomer Homooligomer Protein 2 No other associated polymer Consistent with protein count

Other States of the Same Protein in the Database

Monomer

None

Homodimer
2i68 3b5d 3b61 3b61 3b61 3b61 3b62 3b62 7sfq

9 assemblies

Homotetramer

None

Other homooligomers

None

Heteromeric or nucleic-acid complex
7mgx 7mgx 7mh6 7ssu 7sv9 7svx 7t00

7 assemblies

View Construct and Data Evidence
UniProt name EMRE_ECOLI
Isoform —
PDB entities 1
Chains and sequence ranges Author chain A； PDBConstruct 1–110； UniProt 1–110 Author chain B； PDBConstruct 1–110； UniProt 1–110

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_id2i68
Deposition date deposition_date2006-08-28
Structure title titleCryo-EM based theoretical model structure of transmembrane domain of the multidrug-resistance antiporter from E. coli EmrE
Keywords keywordstransmembrane protein, small-multidrug resistance, transporter, homodimer, dual topology, TRANSPORT PROTEIN; TRANSPORT PROTEIN
Experimental Method methodELECTRON CRYSTALLOGRAPHY
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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.

2i68__assembly_1__model_1

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

Download this curve (.dat)

2i68__assembly_1__model_1 | I(q)

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

2i68__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）16.09 Å
Rg (electron density)15.32 Å
Total Rg16.09 Å
Atom count624
Residues156
Excluded volume8690 ų
Maximum q0.500 Å⁻¹
Assembly Model Structure unit Oligomeric description Status CRYSOL Actions
1 1 2i68__assembly_1__model_1 dimeric （2） 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 (1)

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7. Citations (2)