1t9y

Structural Basis of Multidrug Transport by the AcrB Multidrug Efflux Pump

Method: X-RAY DIFFRACTION Dmax: 124.7 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 homooligomer Homooligomer Protein × 3 PDB declaration: trimeric(3) Consistent with protein copy count Chain A; UniProt 1–1049 Mutation:N109A MC2 N2-(L-PHENYLALANYL)-N1-(NAPHTHALENYL)-L-ARIGNINAMIDE × 6 X-RAY DIFFRACTION mmCIF provides none of the parsed experimental conditions Resolution 3.64 Å R-free 0.340

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

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 1t9y

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 1t9y
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2. Structure Basics 2. Structure Basics

Entry ID entry_id1t9y
Deposition date deposition_date2004-05-19
Structure title titleStructural Basis of Multidrug Transport by the AcrB Multidrug Efflux Pump
Keywords keywordsmembrane protein, 12 transmembranes; MEMBRANE PROTEIN
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier36.69
Radius of gyration Rg (electron density) rg_electron36.78
Forward intensity I(0) i0173137000.00
Molecular weight molecular_weight110670.0 kDa
Excluded volume excluded_volume140680 ų
Envelope volume envelope_volume190820 ų
Hydration-shell volume shell_volume45565 ų
Envelope diameter envelope_diameter133.5
Shell Rg shell_rg40.31
Envelope Rg envelope_rg37.10
Shape Rg shape_rg36.77
Total Rg total_rg37.07
Total atoms total_atoms7784
Residues n_residues1016
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 dmax124.7
Rg (real space) rg_real37.05
Rg uncertainty (real space) rg_real_error1.13
I(0) (real space) i0_real1.7310e+08
I(0) uncertainty (real space) i0_real_error2.9990e+06
Rg (reciprocal space) rg_reciprocal36.83
I(0) (reciprocal space) i0_reciprocal173100000.0000
Solution quality estimate total_estimate0.8120
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary37.7
Skewness Skewness skewness0.614
Kurtosis Kurtosis kurtosis-0.081
Angular range angular_range— – 0.2150 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha33030000.0000
Real-space data points n_real_points44
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.741; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.840; Smooth: 0.489

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (2)

7. Fold Classification (SCOP + CATH) 8 domains

CATH v4.4 (8 domains)

Domain ID domain_id1t9yA01
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_id1t9yA02
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_id1t9yA03
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_id1t9yA04
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_id1t9yA05
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_id1t9yA06
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_id1t9yA07
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_id1t9yA08
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

8. Citations (1)

9. Files and Curves (10)