1opf

THE STRUCTURE OF OMPF PORIN IN A TETRAGONAL CRYSTAL FORM

Method: X-RAY DIFFRACTION Dmax: 147.2 Å Quality: GOOD

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

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 Chain B; UniProt 23–362 Chain C; UniProt 23–362 Not recorded No other associated polymer X-RAY DIFFRACTION mmCIF provides none of the parsed experimental conditions Resolution 3.20 Å
2 Protein homooligomer Homooligomer Protein × 3 PDB declaration: trimeric(3) Consistent with protein copy count Chain D; UniProt 23–362 Chain E; UniProt 23–362 Chain F; UniProt 23–362 Not recorded No other associated polymer X-RAY DIFFRACTION mmCIF provides none of the parsed experimental conditions Resolution 3.20 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.

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

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 1opf

P(r) Distance Distribution P(r) Distribution

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

Entry ID entry_id1opf
Deposition date deposition_date1994-11-21
Structure title titleTHE STRUCTURE OF OMPF PORIN IN A TETRAGONAL CRYSTAL FORM
Keywords keywordsMEMBRANE PROTEIN; MEMBRANE PROTEIN
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier45.30
Radius of gyration Rg (electron density) rg_electron45.75
Forward intensity I(0) i0761075000.00
Molecular weight molecular_weight222430.0 kDa
Excluded volume excluded_volume275000 ų
Envelope volume envelope_volume381920 ų
Hydration-shell volume shell_volume69302 ų
Envelope diameter envelope_diameter155.0
Shell Rg shell_rg51.21
Envelope Rg envelope_rg44.06
Shape Rg shape_rg45.79
Total Rg total_rg45.85
Total atoms total_atoms15762
Residues n_residues2040
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 dmax147.2
Rg (real space) rg_real45.30
Rg uncertainty (real space) rg_real_error1.20
I(0) (real space) i0_real7.6110e+08
I(0) uncertainty (real space) i0_real_error1.2310e+07
Rg (reciprocal space) rg_reciprocal45.30
I(0) (reciprocal space) i0_reciprocal761100000.0000
Solution quality estimate total_estimate0.8245
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary50.5
Skewness Skewness skewness0.263
Kurtosis Kurtosis kurtosis-0.637
Angular range angular_range— – 0.1750 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha143100000.0000
Real-space data points n_real_points36
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.912; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.980; Smooth: 0.000

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (1)

7. Fold Classification (SCOP + CATH) 12 domains

SCOP 2.08 (6 domains)

Domain ID domain_idd1opfa_
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
Domain ID domain_idd1opfb_
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
Domain ID domain_idd1opfc_
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
Domain ID domain_idd1opfd_
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
Domain ID domain_idd1opfe_
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
Domain ID domain_idd1opff_
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 (6 domains)

Domain ID domain_id1opfA00
Class class2 — Mainly Beta
Architecture architecture40 — Beta Barrel
Topology topology160 — Porin
Homologous superfamily homologous superfamily10 — Porin
Domain ID domain_id1opfB00
Class class2 — Mainly Beta
Architecture architecture40 — Beta Barrel
Topology topology160 — Porin
Homologous superfamily homologous superfamily10 — Porin
Domain ID domain_id1opfC00
Class class2 — Mainly Beta
Architecture architecture40 — Beta Barrel
Topology topology160 — Porin
Homologous superfamily homologous superfamily10 — Porin
Domain ID domain_id1opfD00
Class class2 — Mainly Beta
Architecture architecture40 — Beta Barrel
Topology topology160 — Porin
Homologous superfamily homologous superfamily10 — Porin
Domain ID domain_id1opfE00
Class class2 — Mainly Beta
Architecture architecture40 — Beta Barrel
Topology topology160 — Porin
Homologous superfamily homologous superfamily10 — Porin
Domain ID domain_id1opfF00
Class class2 — Mainly Beta
Architecture architecture40 — Beta Barrel
Topology topology160 — Porin
Homologous superfamily homologous superfamily10 — Porin

8. Citations (6)

9. Files and Curves (10)