SAXSdb — 1z6a

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

Helicase of the snf2/rad54 family

Sulfolobus solfataricus

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein monomer	Monomer	Protein 1	MERCURY (II) ION × 3 PHOSPHATE ION × 8	Consistent with protein count
2	Protein homooligomer	Homooligomer	Protein 2	MERCURY (II) ION × 6 PHOSPHATE ION × 16	Consistent with protein count
3	Protein homooligomer	Homooligomer	Protein 2	MERCURY (II) ION × 6 PHOSPHATE ION × 16	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	Q97XQ5_SULSO
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 25–383； UniProt 431–789

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	1z6a
Deposition date deposition_date	2005-03-22
Structure title title	Sulfolobus solfataricus SWI2/SNF2 ATPase core domain
Keywords keywords	HYDROLASE, RECOMBINATION, HYDROLASE-RECOMBINATION COMPLEX; HYDROLASE/RECOMBINATION
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.

1z6a__assembly_1__model_1

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

Download this curve (.dat)

1z6a__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1z6a__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	24.38 Å
Rg (electron density)	23.58 Å
Total Rg	24.30 Å
Atom count	3874
Residues	480
Excluded volume	69726 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1z6a__assembly_1__model_1`	monomeric （1）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`1z6a__assembly_2__model_1`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
3	1	`1z6a__assembly_3__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	Helicase of the snf2/rad54 family
Molecular weight formula_weight	57140.1 kDa
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	3874

MGSSHHHHHHSSGLVPRGSHMASKSFQLLEPYNIKANLRPYQIKGFSWMRFMNKLGFGICLADDMGLGKTLQTIAVFSDAKKENELTPSLVICPLSVLKNWEEELSKFAPHLRFAVFHEDRSKIKLEDYDIILTTYAVLLRDTRLKEVEWKYIVIDEAQNIKNPQTKIFKAVKELKSKYRIALTGTPIENKVDDLWSIMTFLNPGLLGSYSEFKSKFATPIKKGDNMAKEELKAIISPFILRRTKYDKAIINDLPDKIETNVYCNLTPEQAAMYKAEVENLFNNIDSVTGIKRKGMILSTLLKLKQIVDHPALLKGGEQSVRRSGKMIRTMEIIEEALDEGDKIAIFTQFVDMGKIIRNIIEKELNTEVPFLYGELSKKERDDIISKFQNNPSVKFIVLSVKAGGFGINLTSANRVIHFDRWWNPAVEDQATDRVYRIGQTRNVIVHKLISVGTLEEKIDQLLAFKRSLFKDIISSGDSWITELSTEELRKVIELSVGGY

Source Source

Source organism organism	Sulfolobus solfataricus
NCBI taxonomy ID ncbi_taxonomy_id	273057
Host organism host_organism	Escherichia coli

Entity 2 Entity 2 non-polymer

Description description	MERCURY (II) ION
Molecular weight formula_weight	200.6 kDa
Source method src_method	syn
Copy count entity_count	3

Entity 3 Entity 3 non-polymer

Description description	PHOSPHATE ION
Molecular weight formula_weight	95.0 kDa
Source method src_method	syn
Copy count entity_count	8

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6. Fold Classification (SCOP + CATH) 6 domains

SCOP 2.08 (3 domains)

Domain ID domain_id	d1z6aa2
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.37 — P-loop containing nucleoside triphosphate hydrolases
Superfamily Superfamily superfamily	c.37.1 — P-loop containing nucleoside triphosphate hydrolases
Family Family family	c.37.1.19 — Tandem AAA-ATPase domain

Domain ID domain_id	d1z6aa3
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.37 — P-loop containing nucleoside triphosphate hydrolases
Superfamily Superfamily superfamily	c.37.1 — P-loop containing nucleoside triphosphate hydrolases
Family Family family	c.37.1.19 — Tandem AAA-ATPase domain

Domain ID domain_id	d1z6aa4
Class class	l — Artifacts
Fold Fold fold	l.1 — Tags
Superfamily Superfamily superfamily	l.1.1 — Tags
Family Family family	l.1.1.1 — Tags

CATH v4.4 (3 domains)

Domain ID domain_id	1z6aA01
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	10810 — Tandem AAA-ATPase domain

Domain ID domain_id	1z6aA02
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	300 — P-loop containing nucleotide triphosphate hydrolases

Domain ID domain_id	1z6aA03
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	120 — Four Helix Bundle (Hemerythrin (Met), subunit A)
Homologous superfamily homologous superfamily	850 — SWI2/SNF2 ATPases, N-terminal domain

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Unit-cell length a length_a	83.890 Å
Unit-cell length b length_b	83.890 Å
Unit-cell length c length_c	227.540 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	8

Space group space_group	P 41 21 2
Space-group number int_tables_number	92
Crystal system crystal_system	—

Resolution resolution	3.000 Å
Low-resolution limit resolution_low	20.000 Å
R factor r_factor	0.2400
R_work r_work	0.2400
R_free r_free	0.2970

Sulfolobus solfataricus SWI2/SNF2 ATPase core domain

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

Helicase of the snf2/rad54 family

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

1z6a__assembly_1__model_1

1z6a__assembly_1__model_1 | I(q)

1z6a__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 non-polymer

6. Fold Classification (SCOP + CATH) 6 domains

SCOP 2.08 (3 domains)

CATH v4.4 (3 domains)

7. Citations (1)

Sulfolobus solfataricus SWI2/SNF2 ATPase core domain

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

Helicase of the snf2/rad54 family

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

1z6a__assembly_1__model_1

1z6a__assembly_1__model_1 | I(q)

1z6a__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 non-polymer

6. Fold Classification (SCOP + CATH) 6 domains

SCOP 2.08 (3 domains)

CATH v4.4 (3 domains)

7. Citations (1)