SAXSdb — 1osm

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

OMPK36

Klebsiella pneumoniae

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 3	DODECANE × 9	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	OMPC_KLEPN
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–342； UniProt 22–363 Author chain B； PDBConstruct 1–342； UniProt 22–363 Author chain C； PDBConstruct 1–342； UniProt 22–363

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	1osm
Deposition date deposition_date	1999-01-08
Structure title title	OSMOPORIN (OMPK36) FROM KLEBSIELLA PNEUMONIAE
Keywords keywords	OUTER MEMBRANE PROTEIN, NON-SPECIFIC PORIN, OSMOPORIN, BETA-BARREL, TRANSMEMBRANE; OUTER 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.

1osm__assembly_1__model_1

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

Download this curve (.dat)

1osm__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1osm__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	31.56 Å
Rg (electron density)	31.34 Å
Total Rg	32.09 Å
Atom count	8100
Residues	1026
Excluded volume	141850 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1osm__assembly_1__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 (2)

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6. Fold Classification (SCOP + CATH) 6 domains

SCOP 2.08 (3 domains)

Domain ID domain_id	d1osma_
Class class	f — Membrane and cell surface proteins and peptides
Fold Fold fold	f.4 — Transmembrane beta-barrels
Superfamily Superfamily superfamily	f.4.3 — Porins
Family Family family	f.4.3.1 — Porin

Domain ID domain_id	d1osmb_
Class class	f — Membrane and cell surface proteins and peptides
Fold Fold fold	f.4 — Transmembrane beta-barrels
Superfamily Superfamily superfamily	f.4.3 — Porins
Family Family family	f.4.3.1 — Porin

Domain ID domain_id	d1osmc_
Class class	f — Membrane and cell surface proteins and peptides
Fold Fold fold	f.4 — Transmembrane beta-barrels
Superfamily Superfamily superfamily	f.4.3 — Porins
Family Family family	f.4.3.1 — Porin

CATH v4.4 (3 domains)

Domain ID domain_id	1osmA00
Class class	2 — Mainly Beta
Architecture architecture	40 — Beta Barrel
Topology topology	160 — Porin
Homologous superfamily homologous superfamily	10 — Porin

Domain ID domain_id	1osmB00
Class class	2 — Mainly Beta
Architecture architecture	40 — Beta Barrel
Topology topology	160 — Porin
Homologous superfamily homologous superfamily	10 — Porin

Domain ID domain_id	1osmC00
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	191.800 Å
Unit-cell length b length_b	76.800 Å
Unit-cell length c length_c	223.400 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	113.30 °
Unit-cell angle γ angle_gamma	90.00 °
Molecules per unit cell Z z_pdb	12

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

Resolution resolution	3.200 Å
Low-resolution limit resolution_low	15.000 Å
R factor r_factor	0.2080
R_work r_work	0.2080
R_free r_free	0.2230

Description description	OMPK36
Molecular weight formula_weight	37630.5 kDa
Source method src_method	man
Copy count entity_count	3

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B,C
Atom count atom_count	8100

OSMOPORIN (OMPK36) FROM KLEBSIELLA PNEUMONIAE

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

OMPK36

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

1osm__assembly_1__model_1

1osm__assembly_1__model_1 | I(q)

1osm__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 (2)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

6. Fold Classification (SCOP + CATH) 6 domains

SCOP 2.08 (3 domains)

CATH v4.4 (3 domains)

7. Citations (1)

Source organism organism	Klebsiella pneumoniae
NCBI taxonomy ID ncbi_taxonomy_id	573
Host organism host_organism	Escherichia coli

Description description	DODECANE
Molecular weight formula_weight	170.3 kDa
Source method src_method	syn
Copy count entity_count	9

OSMOPORIN (OMPK36) FROM KLEBSIELLA PNEUMONIAE

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

OMPK36

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

1osm__assembly_1__model_1

1osm__assembly_1__model_1 | I(q)

1osm__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 (2)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

6. Fold Classification (SCOP + CATH) 6 domains

SCOP 2.08 (3 domains)

CATH v4.4 (3 domains)

7. Citations (1)