SAXSdb — 1rwz

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

DNA polymerase sliding clamp

Archaeoglobus fulgidus

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 3	water × 3	Consistent with protein count
2	Protein homooligomer	Homooligomer	Protein 12	water × 12	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	PCNA_ARCFU
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–245； UniProt 1–245

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	1rwz
Deposition date deposition_date	2003-12-17
Structure title title	Crystal Structure of Proliferating Cell Nuclear Antigen (PCNA) from A. fulgidus
Keywords keywords	sliding clamp, torus, processivity factor, REPLICATION; REPLICATION
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.

1rwz__assembly_1__model_1

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

Download this curve (.dat)

1rwz__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1rwz__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	33.29 Å
Rg (electron density)	32.02 Å
Total Rg	32.76 Å
Atom count	5718
Residues	732
Excluded volume	103320 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1rwz__assembly_1__model_1`	trimeric （3）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`1rwz__assembly_2__model_1`	dodecameric （12）	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

SCOP 2.08 (2 domains)

Domain ID domain_id	d1rwza1
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.131 — DNA clamp
Superfamily Superfamily superfamily	d.131.1 — DNA clamp
Family Family family	d.131.1.2 — DNA polymerase processivity factor

Domain ID domain_id	d1rwza2
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.131 — DNA clamp
Superfamily Superfamily superfamily	d.131.1 — DNA clamp
Family Family family	d.131.1.2 — DNA polymerase processivity factor

CATH v4.4 (1 domains)

Domain ID domain_id	1rwzA00
Class class	3 — Alpha Beta
Architecture architecture	70 — Box
Topology topology	10 — Proliferating Cell Nuclear Antigen
Homologous superfamily homologous superfamily	10 —

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Unit-cell length a length_a	244.355 Å
Unit-cell length b length_b	244.355 Å
Unit-cell length c length_c	244.355 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	96

Space group space_group	F 41 3 2
Space-group number int_tables_number	210
Crystal system crystal_system	—

Resolution resolution	1.800 Å
Low-resolution limit resolution_low	30.000 Å
R factor r_factor	0.2210
R_work r_work	0.2190
R_free r_free	0.2380

Description description	DNA polymerase sliding clamp
Molecular weight formula_weight	27301.5 kDa
Source method src_method	man
Copy count entity_count	1

Polymer type type	polypeptide(L)
Chain IDs strand_id	A
Atom count atom_count	2222

Crystal Structure of Proliferating Cell Nuclear Antigen (PCNA) from A. fulgidus

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

DNA polymerase sliding clamp

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

1rwz__assembly_1__model_1

1rwz__assembly_1__model_1 | I(q)

1rwz__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) 3 domains

SCOP 2.08 (2 domains)

CATH v4.4 (1 domains)

7. Citations (1)

Source organism organism	Archaeoglobus fulgidus
NCBI taxonomy ID ncbi_taxonomy_id	2234
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	316

Crystal Structure of Proliferating Cell Nuclear Antigen (PCNA) from A. fulgidus

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

DNA polymerase sliding clamp

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

1rwz__assembly_1__model_1

1rwz__assembly_1__model_1 | I(q)

1rwz__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) 3 domains

SCOP 2.08 (2 domains)

CATH v4.4 (1 domains)

7. Citations (1)