SAXSdb — 1qjp

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

OUTER MEMBRANE PROTEIN A

ESCHERICHIA COLI BL21(DE3)

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein monomer	Monomer	Protein 1	(HYDROXYETHYLOXY)TRI(ETHYLOXY)OCTANE × 6 water × 1	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	OMPA_ECOLI
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–171； UniProt 22–192

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	1qjp
Deposition date deposition_date	1999-06-29
Structure title title	HIGH RESOLUTION STRUCTURE OF THE OUTER MEMBRANE PROTEIN A (OMPA) TRANSMEMBRANE DOMAIN
Keywords keywords	OUTER MEMBRANE; OUTER MEMBRANE
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.

1qjp__assembly_1__model_1

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

Download this curve (.dat)

1qjp__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1qjp__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	17.54 Å
Rg (electron density)	16.78 Å
Total Rg	17.84 Å
Atom count	1204
Residues	137
Excluded volume	21935 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1qjp__assembly_1__model_1`	monomeric （1）	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 (3)

Entity 1 Entity 1 polymer

Description description	OUTER MEMBRANE PROTEIN A
Molecular weight formula_weight	18795.7 kDa
Mutation mutation	YES
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A
Atom count atom_count	1291

APKDNTWYTGAKLGWSQYHDTGFINNNGPTHENKLGAGAFGGYQVNPYVGFEMGYDWLGRMPYKGSVENGAYKAQGVQLTAKLGYPITDDLDIYTRLGGMVWRADTYSNVYGKNHDTGVSPVFAGGVEYAITPEIATRLEYQWTNNIGDAHTIGTRPDNGMLSLGVSYRFG

Source Source

Source organism organism	ESCHERICHIA COLI BL21(DE3)
NCBI taxonomy ID ncbi_taxonomy_id	469008
Host organism host_organism	ESCHERICHIA COLI

Entity 2 Entity 2 non-polymer

Description description	(HYDROXYETHYLOXY)TRI(ETHYLOXY)OCTANE
Molecular weight formula_weight	306.4 kDa
Source method src_method	syn
Copy count entity_count	6

Entity 3 Entity 3 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	64

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6. Fold Classification (SCOP + CATH) 2 domains

SCOP 2.08 (1 domains)

Domain ID domain_id	d1qjpa_
Class class	f — Membrane and cell surface proteins and peptides
Fold Fold fold	f.4 — Transmembrane beta-barrels
Superfamily Superfamily superfamily	f.4.1 — OMPA-like
Family Family family	f.4.1.1 — Outer membrane protein

CATH v4.4 (1 domains)

Domain ID domain_id	1qjpA00
Class class	2 — Mainly Beta
Architecture architecture	40 — Beta Barrel
Topology topology	160 — Porin
Homologous superfamily homologous superfamily	20 —

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Unit-cell length a length_a	65.100 Å
Unit-cell length b length_b	79.700 Å
Unit-cell length c length_c	50.200 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	94.30 °
Unit-cell angle γ angle_gamma	90.00 °
Molecules per unit cell Z z_pdb	4

Space group space_group	C 1 2 1
Space-group number int_tables_number	5
Crystal system crystal_system	—

Resolution resolution	1.650 Å
Low-resolution limit resolution_low	12.000 Å
R factor r_factor	—
R_work r_work	0.1550
R_free r_free	0.1980

HIGH RESOLUTION STRUCTURE OF THE OUTER MEMBRANE PROTEIN A (OMPA) TRANSMEMBRANE DOMAIN

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

OUTER MEMBRANE PROTEIN A

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

1qjp__assembly_1__model_1

1qjp__assembly_1__model_1 | I(q)

1qjp__assembly_1__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 (3)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 water

6. Fold Classification (SCOP + CATH) 2 domains

SCOP 2.08 (1 domains)

CATH v4.4 (1 domains)

7. Citations (2)

HIGH RESOLUTION STRUCTURE OF THE OUTER MEMBRANE PROTEIN A (OMPA) TRANSMEMBRANE DOMAIN

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

OUTER MEMBRANE PROTEIN A

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

1qjp__assembly_1__model_1

1qjp__assembly_1__model_1 | I(q)

1qjp__assembly_1__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 (3)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 water

6. Fold Classification (SCOP + CATH) 2 domains

SCOP 2.08 (1 domains)

CATH v4.4 (1 domains)

7. Citations (2)