SAXSdb — 4v0b

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

ATP-DEPENDENT ZINC METALLOPROTEASE FTSH

ESCHERICHIA COLI K-12

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 6	SULFATE ION × 3	Consistent with protein count
2	Protein homooligomer	Homooligomer	Protein 6	No other associated polymer	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	FTSH_ECOLI
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 3–74； UniProt 25–96 Author chain B； PDBConstruct 3–74； UniProt 25–96 Author chain C； PDBConstruct 3–74； UniProt 25–96

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	4v0b
Deposition date deposition_date	2014-09-13
Structure title title	Escherichia coli FtsH hexameric N-domain
Keywords keywords	HYDROLASE, MEMBRANE PROTEIN, PERIPLASMIC DOMAIN; HYDROLASE
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.

4v0b__assembly_2__model_1

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

Download this curve (.dat)

4v0b__assembly_2__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

4v0b__assembly_2__model_1 | P(r) · Pending

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

Rg（Guinier）	25.67 Å
Rg (electron density)	24.12 Å
Total Rg	25.04 Å
Atom count	3096
Residues	378
Excluded volume	54913 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`4v0b__assembly_1__model_1`	hexameric （6）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`4v0b__assembly_2__model_1`	hexameric （6）	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) 3 domains

CATH v4.4 (3 domains)

Domain ID domain_id	4v0bA00
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	720 — Signal recognition particle alu RNA binding heterodimer, srp9/1
Homologous superfamily homologous superfamily	210 —

Domain ID domain_id	4v0bB00
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	720 — Signal recognition particle alu RNA binding heterodimer, srp9/1
Homologous superfamily homologous superfamily	210 —

Domain ID domain_id	4v0bC00
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	720 — Signal recognition particle alu RNA binding heterodimer, srp9/1
Homologous superfamily homologous superfamily	210 —

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Unit-cell length a length_a	119.110 Å
Unit-cell length b length_b	119.110 Å
Unit-cell length c length_c	34.540 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	90.00 °
Unit-cell angle γ angle_gamma	120.00 °
Molecules per unit cell Z z_pdb	18

Space group space_group	P 6
Space-group number int_tables_number	168
Crystal system crystal_system	—

Resolution resolution	2.550 Å
Low-resolution limit resolution_low	38.988 Å
R factor r_factor	0.2102
R_work r_work	0.2073
R_free r_free	0.2498

Description description	ATP-DEPENDENT ZINC METALLOPROTEASE FTSH
Molecular weight formula_weight	9545.6 kDa
EC 编号 ec_number	3.4.24.-
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	1538

Escherichia coli FtsH hexameric N-domain

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

ATP-DEPENDENT ZINC METALLOPROTEASE FTSH

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

4v0b__assembly_2__model_1

4v0b__assembly_2__model_1 | I(q)

4v0b__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 (2)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

6. Fold Classification (SCOP + CATH) 3 domains

CATH v4.4 (3 domains)

7. Citations (1)

Source organism organism	ESCHERICHIA COLI K-12
NCBI taxonomy ID ncbi_taxonomy_id	83333
Host organism host_organism	ESCHERICHIA COLI

Description description	SULFATE ION
Molecular weight formula_weight	96.1 kDa
Source method src_method	syn
Copy count entity_count	1

Escherichia coli FtsH hexameric N-domain

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

ATP-DEPENDENT ZINC METALLOPROTEASE FTSH

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

4v0b__assembly_2__model_1

4v0b__assembly_2__model_1 | I(q)

4v0b__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 (2)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

6. Fold Classification (SCOP + CATH) 3 domains

CATH v4.4 (3 domains)

7. Citations (1)