SAXSdb — 2v43

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

SIGMA-E FACTOR REGULATORY PROTEIN RSEB

ESCHERICHIA COLI

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 2	CYSTEINE × 4 water × 2	Consistent with protein count
2	Protein homooligomer	Homooligomer	Protein 2	water × 2	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	RSEB_ECOLI
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 2–297； UniProt 23–318 Author chain B； PDBConstruct 2–297； UniProt 23–318 Author chain C； PDBConstruct 2–297； UniProt 23–318

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	2v43
Deposition date deposition_date	2007-06-27
Structure title title	Crystal structure of RseB: a sensor for periplasmic stress response in E. coli
Keywords keywords	SENSOR FOR PERIPLASMIC STRESS, REGULATOR, REGULATORY PROTEIN, LIPOPROTEIN BINDING; REGULATOR
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.

2v43__assembly_2__model_1

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

Download this curve (.dat)

2v43__assembly_2__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

2v43__assembly_2__model_1 | P(r) · Pending

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

Rg（Guinier）	29.85 Å
Rg (electron density)	28.94 Å
Total Rg	29.57 Å
Atom count	4356
Residues	552
Excluded volume	77207 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`2v43__assembly_1__model_1`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`2v43__assembly_2__model_1`	dimeric （2）	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	SIGMA-E FACTOR REGULATORY PROTEIN RSEB
Molecular weight formula_weight	34359.9 kDa
Source method src_method	man
Copy count entity_count	3

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B,C
Atom count atom_count	6687

MATPASGALLQQMNLASQSLNYELSFISINKQGVESLRYRHARLDNRPLAQLLQMDGPRREVVQRGNEISYFEPGLEPFTLNGDYIVDSLPSLIYTDFKRLSPYYDFISVGRTRIADRLCEVIRVVARDGTRYSYIVWMDTESKLPMRVDLLDRDGETLEQFRVIAFNVNQDISSSMQTLAKANLPPLLSVPVGEKAKFSWTPTWLPQGFSEVSSSRRPLPTMDNMPIESRLYSDGLFSFSVNVNRATPSSTDQMLRTGRRTVSTSVRDNAEITIVGELPPQTAKRIAENIKFGAAQHHHHHH

Source Source

Source organism organism	ESCHERICHIA COLI
NCBI taxonomy ID ncbi_taxonomy_id	469008
Host organism host_organism	ESCHERICHIA COLI

Entity 2 Entity 2 non-polymer

Description description	CYSTEINE
Molecular weight formula_weight	121.2 kDa
Source method src_method	syn
Copy count entity_count	4

Entity 3 Entity 3 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	194

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6. Fold Classification (SCOP + CATH) 3 domains

CATH v4.4 (3 domains)

Domain ID domain_id	2v43A01
Class class	2 — Mainly Beta
Architecture architecture	50 — Clam
Topology topology	20 — outer membrane lipoprotein receptor (LolB), chain A
Homologous superfamily homologous superfamily	10 — Lipoprotein localisation LolA/LolB/LppX

Domain ID domain_id	2v43B01
Class class	2 — Mainly Beta
Architecture architecture	50 — Clam
Topology topology	20 — outer membrane lipoprotein receptor (LolB), chain A
Homologous superfamily homologous superfamily	10 — Lipoprotein localisation LolA/LolB/LppX

Domain ID domain_id	2v43C01
Class class	2 — Mainly Beta
Architecture architecture	50 — Clam
Topology topology	20 — outer membrane lipoprotein receptor (LolB), chain A
Homologous superfamily homologous superfamily	10 — Lipoprotein localisation LolA/LolB/LppX

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Unit-cell length a length_a	98.600 Å
Unit-cell length b length_b	200.700 Å
Unit-cell length c length_c	109.730 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	90.00 °
Unit-cell angle γ angle_gamma	90.00 °
Molecules per unit cell Z z_pdb	24

Space group space_group	C 2 2 21
Space-group number int_tables_number	20
Crystal system crystal_system	—

Resolution resolution	2.370 Å
Low-resolution limit resolution_low	20.000 Å
R factor r_factor	0.2310
R_work r_work	0.2280
R_free r_free	0.2780

Crystal structure of RseB: a sensor for periplasmic stress response in E. coli

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

SIGMA-E FACTOR REGULATORY PROTEIN RSEB

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

2v43__assembly_2__model_1

2v43__assembly_2__model_1 | I(q)

2v43__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 (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) 3 domains

CATH v4.4 (3 domains)

7. Citations (1)

Crystal structure of RseB: a sensor for periplasmic stress response in E. coli

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

SIGMA-E FACTOR REGULATORY PROTEIN RSEB

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

2v43__assembly_2__model_1

2v43__assembly_2__model_1 | I(q)

2v43__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 (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) 3 domains

CATH v4.4 (3 domains)

7. Citations (1)