4cdi

Crystal structure of AcrB-AcrZ complex

Method: X-RAY DIFFRACTION Dmax: 132.3 Å Quality: GOOD

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

ACRIFLAVINE RESISTANCE PROTEIN B

ESCHERICHIA COLI

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 heterocomplex Heteromer Protein × 6 PDB declaration: hexameric(6) Consistent with protein copy count Chain A; UniProt 1–1049 Not recorded PREDICTED PROTEIN × 3 (C4ZXT3) X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 7.4;293 K;THE ACRBZ COMPLEX AT 10 MG ML-1 USING SAMPLE BUFFER. 9 MM N-OCTYL-BETA-D-THIOGLUCOPYRANOSIDE (90 MM) WAS MIXED WITH ACRBZ COMPLEX BEFORE THE CRYSTALLISATION TRIALS. THE ACRBZ CRYSTALS WERE GROWN AT 20 C USING THE HANGING-DROPLET VAPOUR DIFFUSION METHOD BY MIXING 4 MICROLITERS OF ACRBZ COMPLEX WITH 2 MICROLITERS OF RESERVOIR SOLUTION (100 MM TRICINE PH: 7.4, 50 MM LITHIUM SULPHATE, 5 MM CADMIUM CHLORIDE HYDRATE, 7 % PEG 3000, 10% GLYCEROL). Resolution 3.70 Å R-free 0.361

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

PREDICTED PROTEIN

ESCHERICHIA COLI

UniProt C4ZXT3

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 heterocomplex Heteromer Protein × 6 PDB declaration: hexameric(6) Consistent with protein copy count Chain C; UniProt 1–49 Not recorded ACRIFLAVINE RESISTANCE PROTEIN B × 3 (P31224) X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 7.4;293 K;THE ACRBZ COMPLEX AT 10 MG ML-1 USING SAMPLE BUFFER. 9 MM N-OCTYL-BETA-D-THIOGLUCOPYRANOSIDE (90 MM) WAS MIXED WITH ACRBZ COMPLEX BEFORE THE CRYSTALLISATION TRIALS. THE ACRBZ CRYSTALS WERE GROWN AT 20 C USING THE HANGING-DROPLET VAPOUR DIFFUSION METHOD BY MIXING 4 MICROLITERS OF ACRBZ COMPLEX WITH 2 MICROLITERS OF RESERVOIR SOLUTION (100 MM TRICINE PH: 7.4, 50 MM LITHIUM SULPHATE, 5 MM CADMIUM CHLORIDE HYDRATE, 7 % PEG 3000, 10% GLYCEROL). Resolution 3.70 Å R-free 0.361

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.

No other PDB entry for the same UniProt protein was found.

View Construct and Data Evidence
UniProt name C4ZXT3_ECOBW
Isoform
PDB entities 2
Chains and sequence ranges Author chain C; PDBConstruct 1–49; UniProt 1–49

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 4cdi

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 4cdi
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2. Structure Basics 2. Structure Basics

Entry ID entry_id4cdi
Deposition date deposition_date2013-10-31
Structure title titleCrystal structure of AcrB-AcrZ complex
Keywords keywordsMEMBRANE PROTEIN, DRUG EFFLUX, TRANSMEMBRANE PROTEIN; MEMBRANE PROTEIN
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier37.63
Radius of gyration Rg (electron density) rg_electron37.63
Forward intensity I(0) i0186336000.00
Molecular weight molecular_weight115380.0 kDa
Excluded volume excluded_volume146720 ų
Envelope volume envelope_volume194440 ų
Hydration-shell volume shell_volume45323 ų
Envelope diameter envelope_diameter134.2
Shell Rg shell_rg40.91
Envelope Rg envelope_rg37.84
Shape Rg shape_rg37.64
Total Rg total_rg37.84
Total atoms total_atoms8114
Residues n_residues1078
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 dmax132.3
Rg (real space) rg_real38.02
Rg uncertainty (real space) rg_real_error1.48
I(0) (real space) i0_real1.8630e+08
I(0) uncertainty (real space) i0_real_error3.5660e+06
Rg (reciprocal space) rg_reciprocal37.78
I(0) (reciprocal space) i0_reciprocal186300000.0000
Solution quality estimate total_estimate0.8214
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks1
Primary peak position r_peak_primary34.6
Skewness Skewness skewness0.587
Kurtosis Kurtosis kurtosis-0.190
Angular range angular_range— – 0.2100 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha34040000.0000
Real-space data points n_real_points43
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.672; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.893; Smooth: 0.765

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (2)

7. Fold Classification (SCOP + CATH) 9 domains

CATH v4.4 (9 domains)

Domain ID domain_id4cdiA01
Class class1 — Mainly Alpha
Architecture architecture20 — Up-down Bundle
Topology topology1640 — Multidrug efflux transporter AcrB transmembrane fold
Homologous superfamily homologous superfamily10 — Multidrug efflux transporter AcrB transmembrane domain
Domain ID domain_id4cdiA02
Class class3 — Alpha Beta
Architecture architecture30 — 2-Layer Sandwich
Topology topology70 — Alpha-Beta Plaits
Homologous superfamily homologous superfamily1430 — Multidrug efflux transporter AcrB pore domain
Domain ID domain_id4cdiA03
Class class3 — Alpha Beta
Architecture architecture30 — 2-Layer Sandwich
Topology topology70 — Alpha-Beta Plaits
Homologous superfamily homologous superfamily1320 — Multidrug efflux transporter AcrB pore domain like
Domain ID domain_id4cdiA04
Class class3 — Alpha Beta
Architecture architecture30 — 2-Layer Sandwich
Topology topology2090 — Multidrug efflux transporter AcrB TolC docking domain; DN and DC subdomains
Homologous superfamily homologous superfamily10 — Multidrug efflux transporter AcrB TolC docking domain; DN and DC subdomains
Domain ID domain_id4cdiA05
Class class1 — Mainly Alpha
Architecture architecture20 — Up-down Bundle
Topology topology1640 — Multidrug efflux transporter AcrB transmembrane fold
Homologous superfamily homologous superfamily10 — Multidrug efflux transporter AcrB transmembrane domain
Domain ID domain_id4cdiA06
Class class3 — Alpha Beta
Architecture architecture30 — 2-Layer Sandwich
Topology topology70 — Alpha-Beta Plaits
Homologous superfamily homologous superfamily1430 — Multidrug efflux transporter AcrB pore domain
Domain ID domain_id4cdiA07
Class class3 — Alpha Beta
Architecture architecture30 — 2-Layer Sandwich
Topology topology70 — Alpha-Beta Plaits
Homologous superfamily homologous superfamily1440 — Multidrug efflux transporter AcrB pore domain
Domain ID domain_id4cdiA08
Class class3 — Alpha Beta
Architecture architecture30 — 2-Layer Sandwich
Topology topology2090 — Multidrug efflux transporter AcrB TolC docking domain; DN and DC subdomains
Homologous superfamily homologous superfamily10 — Multidrug efflux transporter AcrB TolC docking domain; DN and DC subdomains
Domain ID domain_id4cdiC00
Class class6 — Special
Architecture architecture10 — Helix non-globular
Topology topology250 — Single alpha-helices involved in coiled-coils or other helix-helix interfaces
Homologous superfamily homologous superfamily2480

8. Citations (1)

9. Files and Curves (10)