1bt9

OMPF PORIN MUTANT D74A

Method: X-RAY DIFFRACTION Dmax: 68.7 Å Quality: GOOD

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

PROTEIN (MATRIX PORIN OUTER MEMBRANE PROTEIN F)

Escherichia coli

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 homooligomer Homooligomer Protein × 3 PDB declaration: trimeric(3) Consistent with protein copy count Chain A; UniProt 23–362 Mutation:D74A No other associated polymer X-RAY DIFFRACTION X-ray crystallization conditions:pH 7;pH 7.0 Resolution 3.00 Å R-free 0.269

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 64 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

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 1bt9

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 1bt9
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2. Structure Basics 2. Structure Basics

Entry ID entry_id1bt9
Deposition date deposition_date1998-09-01
Structure title titleOMPF PORIN MUTANT D74A
Keywords keywordsINTEGRAL MEMBRANE PROTEIN PORIN, PORIN, 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_guinier21.60
Radius of gyration Rg (electron density) rg_electron20.78
Forward intensity I(0) i024741700.00
Molecular weight molecular_weight37029.0 kDa
Excluded volume excluded_volume45805 ų
Envelope volume envelope_volume57033 ų
Hydration-shell volume shell_volume22804 ų
Envelope diameter envelope_diameter70.2
Shell Rg shell_rg27.66
Envelope Rg envelope_rg20.69
Shape Rg shape_rg20.78
Total Rg total_rg21.67
Total atoms total_atoms2624
Residues n_residues340
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 dmax68.7
Rg (real space) rg_real21.45
Rg uncertainty (real space) rg_real_error0.35
I(0) (real space) i0_real2.4740e+07
I(0) uncertainty (real space) i0_real_error3.4110e+05
Rg (reciprocal space) rg_reciprocal21.48
I(0) (reciprocal space) i0_reciprocal24740000.0000
Solution quality estimate total_estimate0.8844
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary29.3
Skewness Skewness skewness0.125
Kurtosis Kurtosis kurtosis-0.316
Angular range angular_range— – 0.3700 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha2782000.0000
Real-space data points n_real_points69
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.837; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.993; Smooth: 0.990

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (2)

7. Fold Classification (SCOP + CATH) 2 domains

SCOP 2.08 (1 domains)

Domain ID domain_idd1bt9a_
Class classf — Membrane and cell surface proteins and peptides
Fold Fold foldf.4 — Transmembrane beta-barrels
Superfamily Superfamily superfamilyf.4.3 — Porins
Family Family familyf.4.3.1 — Porin

CATH v4.4 (1 domains)

Domain ID domain_id1bt9A00
Class class2 — Mainly Beta
Architecture architecture40 — Beta Barrel
Topology topology160 — Porin
Homologous superfamily homologous superfamily10 — Porin

8. Citations (2)

9. Files and Curves (10)