SAXSdb — 3k19

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

Outer membrane protein F

OrganismNot specified

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 3	No other associated polymer	Consistent with protein count
2	Protein homooligomer	Homooligomer	Protein 3	No other associated polymer	Consistent with protein count
3	Protein homooligomer	Homooligomer	Protein 3	No other associated polymer	Consistent with protein count
4	Protein homooligomer	Homooligomer	Protein 3	No other associated polymer	Consistent with protein count

Other States of the Same Protein in the Database

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 Author chain G； PDBConstruct 1–340； UniProt 23–362 Author chain H； PDBConstruct 1–340； UniProt 23–362 Author chain I； PDBConstruct 1–340； UniProt 23–362 Author chain J； PDBConstruct 1–340； UniProt 23–362 Author chain K； PDBConstruct 1–340； UniProt 23–362 Author chain L； 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.

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2. Structure Basics 2. Structure Basics

Entry ID entry_id	3k19
Deposition date deposition_date	2009-09-26
Structure title title	OmpF porin
Keywords keywords	;BETA BARREL, FOSCHOLINE-12, Structural Genomics, PSI-2, Protein Structure Initiative, Center for Structures of Membrane Proteins, CSMP, Cell membrane, Cell outer membrane, Ion transport, Membrane, Phage recognition, Porin, Transmembrane, Transport, TRANSPORT PROTEIN, MEMBRANE PROTEIN ;; MEMBRANE PROTEIN
Experimental Method method	X-RAY DIFFRACTION

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3. Official assembly/model SAXS Official SAXS Profiles

This page reads only the latest assembly calculations. Every curve maps to an explicit PDB entry, official biological assembly and coordinate model.

3k19__assembly_2__model_1

Assembly 2 · Model 1 · CRYSOL 4.1.3-1-20251215 (887e7ef)

Download this curve (.dat)

3k19__assembly_2__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

3k19__assembly_2__model_1 | P(r) · Pending

P(r) will be calculated and displayed separately for the same assembly/model.

Rg（Guinier）	30.94 Å
Rg (electron density)	30.39 Å
Total Rg	31.15 Å
Atom count	7881
Residues	1020
Excluded volume	137500 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`3k19__assembly_1__model_1`	trimeric （3）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`3k19__assembly_2__model_1`	trimeric （3）	Success	4.1.3-1-20251215 (887e7ef)	View Download
3	1	`3k19__assembly_3__model_1`	trimeric （3）	Success	4.1.3-1-20251215 (887e7ef)	View Download
4	1	`3k19__assembly_4__model_1`	trimeric （3）	Success	4.1.3-1-20251215 (887e7ef)	View Download

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4. Crystallography and Experiment 4. Crystallography & Experiment

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5. Entities and Polymers Entities & Polymers (1)

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6. Fold Classification (SCOP + CATH) 12 domains

CATH v4.4 (12 domains)

Domain ID domain_id	3k19A00
Class class	2 — Mainly Beta
Architecture architecture	40 — Beta Barrel
Topology topology	160 — Porin
Homologous superfamily homologous superfamily	10 — Porin

Domain ID domain_id	3k19B00
Class class	2 — Mainly Beta
Architecture architecture	40 — Beta Barrel
Topology topology	160 — Porin
Homologous superfamily homologous superfamily	10 — Porin

Domain ID domain_id	3k19C00
Class class	2 — Mainly Beta
Architecture architecture	40 — Beta Barrel
Topology topology	160 — Porin
Homologous superfamily homologous superfamily	10 — Porin

Domain ID domain_id	3k19D00
Class class	2 — Mainly Beta
Architecture architecture	40 — Beta Barrel
Topology topology	160 — Porin
Homologous superfamily homologous superfamily	10 — Porin

Domain ID domain_id	3k19E00
Class class	2 — Mainly Beta
Architecture architecture	40 — Beta Barrel
Topology topology	160 — Porin
Homologous superfamily homologous superfamily	10 — Porin

Domain ID domain_id	3k19F00
Class class	2 — Mainly Beta
Architecture architecture	40 — Beta Barrel
Topology topology	160 — Porin
Homologous superfamily homologous superfamily	10 — Porin

Domain ID domain_id	3k19G00
Class class	2 — Mainly Beta
Architecture architecture	40 — Beta Barrel
Topology topology	160 — Porin
Homologous superfamily homologous superfamily	10 — Porin

Domain ID domain_id	3k19H00
Class class	2 — Mainly Beta
Architecture architecture	40 — Beta Barrel
Topology topology	160 — Porin
Homologous superfamily homologous superfamily	10 — Porin

Domain ID domain_id	3k19I00
Class class	2 — Mainly Beta
Architecture architecture	40 — Beta Barrel
Topology topology	160 — Porin
Homologous superfamily homologous superfamily	10 — Porin

Domain ID domain_id	3k19J00
Class class	2 — Mainly Beta
Architecture architecture	40 — Beta Barrel
Topology topology	160 — Porin
Homologous superfamily homologous superfamily	10 — Porin

Domain ID domain_id	3k19K00
Class class	2 — Mainly Beta
Architecture architecture	40 — Beta Barrel
Topology topology	160 — Porin
Homologous superfamily homologous superfamily	10 — Porin

Domain ID domain_id	3k19L00
Class class	2 — Mainly Beta
Architecture architecture	40 — Beta Barrel
Topology topology	160 — Porin
Homologous superfamily homologous superfamily	10 — Porin

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Unit-cell length a length_a	136.708 Å
Unit-cell length b length_b	210.522 Å
Unit-cell length c length_c	137.042 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	100.49 °
Unit-cell angle γ angle_gamma	90.00 °
Molecules per unit cell Z z_pdb	24

Space group space_group	P 1 21 1
Space-group number int_tables_number	4
Crystal system crystal_system	—

Resolution resolution	3.790 Å
Low-resolution limit resolution_low	49.570 Å
R factor r_factor	0.2806
R_work r_work	0.2802
R_free r_free	0.2879

Description description	Outer membrane protein F
Molecular weight formula_weight	37114.2 kDa
Source method src_method	nat
Copy count entity_count	12

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B,C,D,E,F,G,H,I,J,K,L
Atom count atom_count	31524

OmpF porin

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

Outer membrane protein F

State in the Current Structure

Other States of the Same Protein in the Database

2. Structure Basics 2. Structure Basics

3. Official assembly/model SAXS Official SAXS Profiles

3k19__assembly_2__model_1

3k19__assembly_2__model_1 | I(q)

3k19__assembly_2__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

Refinement Refinement

Diffraction experiment Diffraction

5. Entities and Polymers Entities & Polymers (1)

Entity 1 Entity 1 polymer

Polymer Polymer

6. Fold Classification (SCOP + CATH) 12 domains

CATH v4.4 (12 domains)

7. Citations (1)

OmpF porin

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

Outer membrane protein F

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

2. Structure Basics 2. Structure Basics

3. Official assembly/model SAXS Official SAXS Profiles

3k19__assembly_2__model_1

3k19__assembly_2__model_1 | I(q)

3k19__assembly_2__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

Refinement Refinement

Diffraction experiment Diffraction

5. Entities and Polymers Entities & Polymers (1)

Entity 1 Entity 1 polymer

Polymer Polymer

6. Fold Classification (SCOP + CATH) 12 domains

CATH v4.4 (12 domains)

7. Citations (1)