SAXSdb — 3k9r

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

Alr3790 protein

Nostoc sp.

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
2	Protein homooligomer	Homooligomer	Protein 2	water × 2	Consistent with protein count
3	Protein homooligomer	Homooligomer	Protein 2	water × 2	Consistent with protein count
4	Protein homooligomer	Homooligomer	Protein 2	water × 2	Consistent with protein count
5	Protein homooligomer	Homooligomer	Protein 2	water × 2	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	Q8YQN0_ANASP
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 2–107； UniProt 15–120 Author chain B； PDBConstruct 2–107； UniProt 15–120 Author chain C； PDBConstruct 2–107； UniProt 15–120 Author chain D； PDBConstruct 2–107； UniProt 15–120

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	3k9r
Deposition date deposition_date	2009-10-16
Structure title title	X-ray structure of the Rhodanese-like domain of the Alr3790 protein from Anabaena sp. Northeast Structural Genomics Consortium Target NsR437c.
Keywords keywords	;ALR3790, RHODANESE-LIKE, NSR437C, NESG, STRUCTURAL GENOMICS., PSI-2, Protein Structure Initiative, Northeast Structural Genomics Consortium, structural genomics, 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.

3k9r__assembly_4__model_1

Assembly 4 · Model 1 · CRYSOL 4.1.3-1-20251215 (887e7ef)

Download this curve (.dat)

3k9r__assembly_4__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

3k9r__assembly_4__model_1 | P(r) · Pending

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

Rg（Guinier）	22.28 Å
Rg (electron density)	21.57 Å
Total Rg	22.14 Å
Atom count	1509
Residues	193
Excluded volume	26659 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`3k9r__assembly_1__model_1`	tetrameric （4）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`3k9r__assembly_2__model_1`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
3	1	`3k9r__assembly_3__model_1`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
4	1	`3k9r__assembly_4__model_1`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
5	1	`3k9r__assembly_5__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	3k9rA00
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	250 — Oxidized Rhodanese; domain 1
Homologous superfamily homologous superfamily	10 — Rhodanese-like domain

Domain ID domain_id	3k9rB00
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	250 — Oxidized Rhodanese; domain 1
Homologous superfamily homologous superfamily	10 — Rhodanese-like domain

Domain ID domain_id	3k9rC00
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	250 — Oxidized Rhodanese; domain 1
Homologous superfamily homologous superfamily	10 — Rhodanese-like domain

Domain ID domain_id	3k9rD00
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	250 — Oxidized Rhodanese; domain 1
Homologous superfamily homologous superfamily	10 — Rhodanese-like domain

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Unit-cell length a length_a	37.286 Å
Unit-cell length b length_b	78.894 Å
Unit-cell length c length_c	64.767 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	103.09 °
Unit-cell angle γ angle_gamma	90.00 °
Molecules per unit cell Z z_pdb	8

Space group space_group	P 1 21 1
Space-group number int_tables_number	4
Crystal system crystal_system	—

Resolution resolution	1.960 Å
Low-resolution limit resolution_low	36.320 Å
R factor r_factor	0.2030
R_work r_work	0.2030
R_free r_free	0.2290

Description description	Alr3790 protein
Molecular weight formula_weight	12932.8 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	3342

X-ray structure of the Rhodanese-like domain of the Alr3790 protein from Anabaena sp. Northeast Structural Genomics Consortium Target NsR437c.

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

Alr3790 protein

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

3k9r__assembly_4__model_1

3k9r__assembly_4__model_1 | I(q)

3k9r__assembly_4__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) 4 domains

CATH v4.4 (4 domains)

7. Citations (1)

Source organism organism	Nostoc sp.
NCBI taxonomy ID ncbi_taxonomy_id	103690
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	289

X-ray structure of the Rhodanese-like domain of the Alr3790 protein from Anabaena sp. Northeast Structural Genomics Consortium Target NsR437c.

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

Alr3790 protein

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

3k9r__assembly_4__model_1

3k9r__assembly_4__model_1 | I(q)

3k9r__assembly_4__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) 4 domains

CATH v4.4 (4 domains)

7. Citations (1)