SAXSdb — 3dca

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

RPA0582

Rhodopseudomonas palustris

State in the Current Structure

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

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	Q6NC90_RHOPA
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–142； UniProt 1–142 Author chain B； PDBConstruct 1–142； UniProt 1–142 Author chain C； PDBConstruct 1–142； UniProt 1–142 Author chain D； PDBConstruct 1–142； UniProt 1–142

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	3dca
Deposition date deposition_date	2008-06-03
Structure title title	Crystal structure of the RPA0582- protein of unknown function from Rhodopseudomonas palustris- a structural genomics target
Keywords keywords	;Alpha-beta-barrel, structural genomics, SAD, PSI-2, Protein Structure Initiative, Midwest Center for Structural Genomics, MCSG, unknown function ;; structural genomics, unknown function
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.

3dca__assembly_2__model_1

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

Download this curve (.dat)

3dca__assembly_2__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

3dca__assembly_2__model_1 | P(r) · Pending

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

Rg（Guinier）	20.02 Å
Rg (electron density)	18.93 Å
Total Rg	19.72 Å
Atom count	1944
Residues	254
Excluded volume	34279 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`3dca__assembly_1__model_1`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`3dca__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 (2)

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6. Fold Classification (SCOP + CATH) 4 domains

CATH v4.4 (4 domains)

Domain ID domain_id	3dcaA00
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	70 — Alpha-Beta Plaits
Homologous superfamily homologous superfamily	100 —

Domain ID domain_id	3dcaB00
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	70 — Alpha-Beta Plaits
Homologous superfamily homologous superfamily	100 —

Domain ID domain_id	3dcaC00
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	70 — Alpha-Beta Plaits
Homologous superfamily homologous superfamily	100 —

Domain ID domain_id	3dcaD00
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	70 — Alpha-Beta Plaits
Homologous superfamily homologous superfamily	100 —

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Unit-cell length a length_a	193.495 Å
Unit-cell length b length_b	193.495 Å
Unit-cell length c length_c	118.848 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	36

Space group space_group	H 3
Space-group number int_tables_number	146
Crystal system crystal_system	—

Resolution resolution	3.350 Å
Low-resolution limit resolution_low	36.590 Å
R factor r_factor	0.2740
R_work r_work	0.2730
R_free r_free	0.2900

Description description	RPA0582
Molecular weight formula_weight	16269.9 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	3894

Crystal structure of the RPA0582- protein of unknown function from Rhodopseudomonas palustris- a structural genomics target

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

RPA0582

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

3dca__assembly_2__model_1

3dca__assembly_2__model_1 | I(q)

3dca__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) 4 domains

CATH v4.4 (4 domains)

7. Citations (1)

Source organism organism	Rhodopseudomonas palustris
NCBI taxonomy ID ncbi_taxonomy_id	1076
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	6

Crystal structure of the RPA0582- protein of unknown function from Rhodopseudomonas palustris- a structural genomics target

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

RPA0582

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

3dca__assembly_2__model_1

3dca__assembly_2__model_1 | I(q)

3dca__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) 4 domains

CATH v4.4 (4 domains)

7. Citations (1)