5nuq

Structural basis for maintenance of bacterial outer membrane lipid asymmetry

Method: X-RAY DIFFRACTION Dmax: 181.0 Å Quality: GOOD

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

Outer membrane protein F

Escherichia coli (strain K12)

UniProt P02931

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 × 4 PDB declaration: tetrameric(4) Consistent with protein copy count Chain A; UniProt 23–362 Chain C; UniProt 23–362 Chain E; UniProt 23–362 Not recorded Probable phospholipid-binding lipoprotein mlaA × 1 (A0A0U8E5M0) C8E (HYDROXYETHYLOXY)TRI(ETHYLOXY)OCTANE × 4 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, SITTING DROP;295 K;0.32 M lithium chloride 0.1M Sodium citrate pH 5.5 and 14% PEG 400 Resolution 3.20 Å R-free 0.306
2 Protein heterocomplex Heteromer Protein × 4 PDB declaration: tetrameric(4) Consistent with protein copy count Chain B; UniProt 23–362 Chain D; UniProt 23–362 Chain F; UniProt 23–362 Not recorded Probable phospholipid-binding lipoprotein mlaA × 1 (A0A0U8E5M0) C8E (HYDROXYETHYLOXY)TRI(ETHYLOXY)OCTANE × 5 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, SITTING DROP;295 K;0.32 M lithium chloride 0.1M Sodium citrate pH 5.5 and 14% PEG 400 Resolution 3.20 Å R-free 0.306

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.

41 other PDB entries and 63 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name OMPF_ECOLI
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 1–340; UniProt 23–362 Author chain B; PDBConstruct 1–340; UniProt 23–362 Author chain C; PDBConstruct 1–340; UniProt 23–362 Author chain D; PDBConstruct 1–340; UniProt 23–362 Author chain E; PDBConstruct 1–340; UniProt 23–362 Author chain F; PDBConstruct 1–340; UniProt 23–362

Probable phospholipid-binding lipoprotein mlaA

Serratia marcescens

UniProt A0A0U8E5M0

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 × 4 PDB declaration: tetrameric(4) Consistent with protein copy count Chain H; UniProt 18–252 Not recorded Outer membrane protein F × 3 (P02931) C8E (HYDROXYETHYLOXY)TRI(ETHYLOXY)OCTANE × 4 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, SITTING DROP;295 K;0.32 M lithium chloride 0.1M Sodium citrate pH 5.5 and 14% PEG 400 Resolution 3.20 Å R-free 0.306
2 Protein heterocomplex Heteromer Protein × 4 PDB declaration: tetrameric(4) Consistent with protein copy count Chain G; UniProt 18–252 Not recorded Outer membrane protein F × 3 (P02931) C8E (HYDROXYETHYLOXY)TRI(ETHYLOXY)OCTANE × 5 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, SITTING DROP;295 K;0.32 M lithium chloride 0.1M Sodium citrate pH 5.5 and 14% PEG 400 Resolution 3.20 Å R-free 0.306

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 A0A0U8E5M0_SERMA
Isoform
PDB entities 2
Chains and sequence ranges Author chain G; PDBConstruct 1–235; UniProt 18–252 Author chain H; PDBConstruct 1–235; UniProt 18–252

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 5nuq

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 5nuq
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2. Structure Basics 2. Structure Basics

Entry ID entry_id5nuq
Deposition date deposition_date2017-05-01
Structure title titleStructural basis for maintenance of bacterial outer membrane lipid asymmetry
Keywords keywordsOuter membrane, lipid asymmetry, lipoprotein, phospholipid translocation, membrane protein; MEMBRANE PROTEIN
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier52.51
Radius of gyration Rg (electron density) rg_electron52.97
Forward intensity I(0) i01076420000.00
Molecular weight molecular_weight268940.0 kDa
Excluded volume excluded_volume333720 ų
Envelope volume envelope_volume479880 ų
Hydration-shell volume shell_volume77520 ų
Envelope diameter envelope_diameter185.7
Shell Rg shell_rg52.93
Envelope Rg envelope_rg52.44
Shape Rg shape_rg52.96
Total Rg total_rg52.97
Total atoms total_atoms19044
Residues n_residues2439
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 dmax181.0
Rg (real space) rg_real52.69
Rg uncertainty (real space) rg_real_error1.90
I(0) (real space) i0_real1.0760e+09
I(0) uncertainty (real space) i0_real_error1.9580e+07
Rg (reciprocal space) rg_reciprocal52.34
I(0) (reciprocal space) i0_reciprocal1076000000.0000
Solution quality estimate total_estimate0.8567
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks1
Primary peak position r_peak_primary48.3
Skewness Skewness skewness0.382
Kurtosis Kurtosis kurtosis-0.558
Angular range angular_range— – 0.1500 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha121200000.0000
Real-space data points n_real_points31
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.789; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.979; Smooth: 0.787

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (3)

7. Fold Classification (SCOP + CATH) 6 domains

CATH v4.4 (6 domains)

Domain ID domain_id5nuqA00
Class class2 — Mainly Beta
Architecture architecture40 — Beta Barrel
Topology topology160 — Porin
Homologous superfamily homologous superfamily10 — Porin
Domain ID domain_id5nuqB00
Class class2 — Mainly Beta
Architecture architecture40 — Beta Barrel
Topology topology160 — Porin
Homologous superfamily homologous superfamily10 — Porin
Domain ID domain_id5nuqC00
Class class2 — Mainly Beta
Architecture architecture40 — Beta Barrel
Topology topology160 — Porin
Homologous superfamily homologous superfamily10 — Porin
Domain ID domain_id5nuqD00
Class class2 — Mainly Beta
Architecture architecture40 — Beta Barrel
Topology topology160 — Porin
Homologous superfamily homologous superfamily10 — Porin
Domain ID domain_id5nuqE00
Class class2 — Mainly Beta
Architecture architecture40 — Beta Barrel
Topology topology160 — Porin
Homologous superfamily homologous superfamily10 — Porin
Domain ID domain_id5nuqF00
Class class2 — Mainly Beta
Architecture architecture40 — Beta Barrel
Topology topology160 — Porin
Homologous superfamily homologous superfamily10 — Porin

8. Citations (1)

9. Files and Curves (10)