8qzt

Single particle cryo-EM co-structure of E. coli AcrB with bound BDM91531 inhibitor at 3.52 A resolution

Method: ELECTRON MICROSCOPY Dmax: 144.7 Å Quality: REASONABLE

1. Protein Identity and Related Structures Protein Identity & Related Structures

Multidrug efflux pump subunit AcrB

Escherichia coli K-12

UniProt P31224

State in the Current Structure

Assembly Oligomeric State Construct Mutations and Modifications Ligands, Ions and Associated Components Method and Experimental Conditions Structure Quality
1 Protein homooligomer Homooligomer Protein × 3 PDB declaration: trimeric(3) Consistent with protein copy count Chain A; UniProt 1–1049 Chain B; UniProt 1–1049 Chain C; UniProt 1–1049 Not recorded XE9 [3-(3-chloranyl-2-piperazin-1-yl-quinolin-6-yl)phenyl]methanamine × 2 ELECTRON MICROSCOPY cryo-EM buffer:pH 7.5 cryo-EM vitrification conditions:Cryogen ETHANE Resolution 3.52 Å

Other States of the Same Protein in the Database

Each row is a biological assembly of the same UniProt protein in another PDB entry. The “Difference from current entry” column identifies evidence-level differences; no tag means the currently parsed fields agree.

117 other PDB entries and 124 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name ACRB_ECOLI
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 1–1049; UniProt 1–1049 Author chain B; PDBConstruct 1–1049; UniProt 1–1049 Author chain C; PDBConstruct 1–1049; UniProt 1–1049

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.

SAXS scattering curve SAXS Profile

SAXS profile for 8qzt

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 8qzt
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2. Structure Basics 2. Structure Basics

Entry ID entry_id8qzt
Deposition date deposition_date2023-10-29
最后修订 last_revision2024-11-06
Structure title titleSingle particle cryo-EM co-structure of E. coli AcrB with bound BDM91531 inhibitor at 3.52 A resolution
Keywords keywordsEfflux Pump Inhibitor, Transmembrane Binding, Antibiotic Resistance, TRANSPORT PROTEIN; TRANSPORT PROTEIN
Experimental Method methodELECTRON MICROSCOPY

3. SAXS Parameters (CRYSOL theoretical calculation) 3. SAXS Parameters (CRYSOL)

Radius of gyration Rg (Guinier) rg_guinier45.28
Radius of gyration Rg (electron density) rg_electron44.67
Forward intensity I(0) i01466060000.00
Molecular weight molecular_weight333620.0 kDa
Excluded volume excluded_volume424000 ų
Envelope volume envelope_volume554500 ų
Hydration-shell volume shell_volume98056 ų
Envelope diameter envelope_diameter142.9
Shell Rg shell_rg53.52
Envelope Rg envelope_rg43.90
Shape Rg shape_rg44.68
Total Rg total_rg44.97
Total atoms total_atoms47367
Residues n_residues3079
Spherical-harmonic order n_harmonics20
q range q_range— – 0.5000 −1
Data points n_points101
Shell type shell_typedirectional
Solvent electron density solvent_density0.3340 e/ų
Shell contrast contrast_shell0.0300 e/ų
CRYSOL version crysol_version4.1.3

4. P(r) Distance Distribution (GNOM inversion) 4. P(r) Analysis (GNOM)

Maximum dimension Dmax dmax144.7
Rg (real space) rg_real45.01
Rg uncertainty (real space) rg_real_error1.06
I(0) (real space) i0_real1.4660e+09
I(0) uncertainty (real space) i0_real_error2.5780e+07
Rg (reciprocal space) rg_reciprocal45.28
I(0) (reciprocal space) i0_reciprocal1467000000.0000
Solution quality estimate total_estimate0.6688
Solution quality rating solution_quality REASONABLE a REASONABLE solution
P(r) peaks n_peaks1
Primary peak position r_peak_primary57.9
Skewness Skewness skewness0.148
Kurtosis Kurtosis kurtosis-0.434
Angular range angular_range— – 0.1750 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha291500000.0000
Real-space data points n_real_points36
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.868; Stabil: 1.000; Sysdev: 0.062; Positv: 1.000; Valcen: 0.982; Smooth: 0.918

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (2)

8. Citations (1)

9. Files and Curves (10)