SAXSdb — 2qw6

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

AAA ATPase, central region

Enterococcus faecium

State in the Current Structure

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

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	Q3XY27_ENTFC
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 4–104； UniProt 230–330 Author chain B； PDBConstruct 4–104； UniProt 230–330 Author chain C； PDBConstruct 4–104； UniProt 230–330 Author chain D； PDBConstruct 4–104； UniProt 230–330

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	2qw6
Deposition date deposition_date	2007-08-09
Structure title title	Crystal structure of the C-terminal domain of an AAA ATPase from Enterococcus faecium DO
Keywords keywords	;STRUCTURAL GENOMICS, ATPASE, PSI-2, Protein Structure Initiative, New York SGX Research Center for Structural Genomics, NYSGXRC, ATP-binding, Nucleotide-binding, HYDROLASE ;; 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.

2qw6__assembly_1__model_1

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

Download this curve (.dat)

2qw6__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

2qw6__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	21.89 Å
Rg (electron density)	20.85 Å
Total Rg	21.56 Å
Atom count	2528
Residues	339
Excluded volume	45531 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`2qw6__assembly_1__model_1`	tetrameric （4）	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) 8 domains

SCOP 2.08 (4 domains)

Domain ID domain_id	d2qw6a1
Class class	a — All alpha proteins
Fold Fold fold	a.80 — post-AAA+ oligomerization domain-like
Superfamily Superfamily superfamily	a.80.1 — post-AAA+ oligomerization domain-like
Family Family family	a.80.1.2 — MgsA/YrvN C-terminal domain-like

Domain ID domain_id	d2qw6b_
Class class	a — All alpha proteins
Fold Fold fold	a.80 — post-AAA+ oligomerization domain-like
Superfamily Superfamily superfamily	a.80.1 — post-AAA+ oligomerization domain-like
Family Family family	a.80.1.2 — MgsA/YrvN C-terminal domain-like

Domain ID domain_id	d2qw6c_
Class class	a — All alpha proteins
Fold Fold fold	a.80 — post-AAA+ oligomerization domain-like
Superfamily Superfamily superfamily	a.80.1 — post-AAA+ oligomerization domain-like
Family Family family	a.80.1.2 — MgsA/YrvN C-terminal domain-like

Domain ID domain_id	d2qw6d_
Class class	a — All alpha proteins
Fold Fold fold	a.80 — post-AAA+ oligomerization domain-like
Superfamily Superfamily superfamily	a.80.1 — post-AAA+ oligomerization domain-like
Family Family family	a.80.1.2 — MgsA/YrvN C-terminal domain-like

CATH v4.4 (4 domains)

Domain ID domain_id	2qw6A00
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	272 — Zinc Finger, Delta Prime; domain 3
Homologous superfamily homologous superfamily	10 —

Domain ID domain_id	2qw6B00
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	272 — Zinc Finger, Delta Prime; domain 3
Homologous superfamily homologous superfamily	10 —

Domain ID domain_id	2qw6C00
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	272 — Zinc Finger, Delta Prime; domain 3
Homologous superfamily homologous superfamily	10 —

Domain ID domain_id	2qw6D00
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	272 — Zinc Finger, Delta Prime; domain 3
Homologous superfamily homologous superfamily	10 —

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Unit-cell length a length_a	62.868 Å
Unit-cell length b length_b	87.016 Å
Unit-cell length c length_c	87.703 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	16

Space group space_group	P 21 21 2
Space-group number int_tables_number	18
Crystal system crystal_system	—

Resolution resolution	2.300 Å
Low-resolution limit resolution_low	20.000 Å
R factor r_factor	0.2270
R_work r_work	0.2240
R_free r_free	0.2750

Description description	AAA ATPase, central region
Molecular weight formula_weight	11998.7 kDa
Source method src_method	man
Copy count entity_count	4

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B,C,D
Atom count atom_count	2593

Crystal structure of the C-terminal domain of an AAA ATPase from Enterococcus faecium DO

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

AAA ATPase, central region

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

2qw6__assembly_1__model_1

2qw6__assembly_1__model_1 | I(q)

2qw6__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 water

6. Fold Classification (SCOP + CATH) 8 domains

SCOP 2.08 (4 domains)

CATH v4.4 (4 domains)

7. Citations (1)

Source organism organism	Enterococcus faecium
NCBI taxonomy ID ncbi_taxonomy_id	333849
Host organism host_organism	Escherichia coli BL21(DE3)

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	65

Crystal structure of the C-terminal domain of an AAA ATPase from Enterococcus faecium DO

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

AAA ATPase, central region

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

2qw6__assembly_1__model_1

2qw6__assembly_1__model_1 | I(q)

2qw6__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 water

6. Fold Classification (SCOP + CATH) 8 domains

SCOP 2.08 (4 domains)

CATH v4.4 (4 domains)

7. Citations (1)