SAXSdb — 4n9m

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

Uricase

Aspergillus flavus

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 4	8-hydroxy-3,9-dihydro-1H-purine-2,6-dione × 4 CHLORIDE ION × 4 SODIUM ION × 4 water × 4	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	URIC_ASPFL
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 2–302； UniProt 2–302

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	4n9m
Deposition date deposition_date	2013-10-21
Structure title title	Joint neutron/x-ray structure of urate oxidase in complex with 8-hydroxyxanthine
Keywords keywords	urate oxidase, uricase oxidoreductase, OXIDOREDUCTASE; OXIDOREDUCTASE

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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.

4n9m__assembly_1__model_1

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

Download this curve (.dat)

4n9m__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

4n9m__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	31.79 Å
Rg (electron density)	30.59 Å
Total Rg	31.34 Å
Atom count	20568
Residues	1180
Excluded volume	192100 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`4n9m__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 (5)

Entity 1 Entity 1 polymer

Description description	Uricase
Molecular weight formula_weight	34183.6 kDa
EC 编号 ec_number	1.7.3.3
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	5204

XSAVKAARYGKDNVRVYKVHKDEKTGVQTVYEMTVCVLLEGEIETSYTKADNSVIVATDSIKNTIYITAKQNPVTPPELFGSILGTHFIEKYNHIHAAHVNIVCHRWTRMDIDGKPHPHSFIRDSEEKRNVQVDVVEGKGIDIKSSLSGLTVLKSTNSQFWGFLRDEYTTLKETWDRILSTDVDATWQWKNFSGLQEVRSHVPKFDATWATAREVTLKTFAEDNSASVQATMYKMAEQILARQQLIETVEYSLPNKHYFEIDLSWHKGLQNTGKNAEVFAPQSDPNGLIKCTVGRSSLKSKL

Source Source

Source organism organism	Aspergillus flavus
NCBI taxonomy ID ncbi_taxonomy_id	5059
Host organism host_organism	Saccharomyces cerevisiae

Entity 2 Entity 2 non-polymer

Description description	8-hydroxy-3,9-dihydro-1H-purine-2,6-dione
Molecular weight formula_weight	168.1 kDa
Source method src_method	syn
Copy count entity_count	1

Entity 3 Entity 3 non-polymer

Description description	CHLORIDE ION
Molecular weight formula_weight	35.5 kDa
Source method src_method	syn
Copy count entity_count	1

Entity 4 Entity 4 non-polymer

Description description	SODIUM ION
Molecular weight formula_weight	23.0 kDa
Source method src_method	syn
Copy count entity_count	1

Entity 5 Entity 5 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	187

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6. Fold Classification (SCOP + CATH) 3 domains

SCOP 2.08 (2 domains)

Domain ID domain_id	d4n9ma1
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.96 — T-fold
Superfamily Superfamily superfamily	d.96.1 — Tetrahydrobiopterin biosynthesis enzymes-like
Family Family family	d.96.1.4 — Urate oxidase (uricase)

Domain ID domain_id	d4n9ma2
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.96 — T-fold
Superfamily Superfamily superfamily	d.96.1 — Tetrahydrobiopterin biosynthesis enzymes-like
Family Family family	d.96.1.4 — Urate oxidase (uricase)

CATH v4.4 (1 domains)

Domain ID domain_id	4n9mA00
Class class	3 — Alpha Beta
Architecture architecture	10 — Roll
Topology topology	270 — Urate Oxidase
Homologous superfamily homologous superfamily	10 — Urate Oxidase;

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Unit-cell length a length_a	80.180 Å
Unit-cell length b length_b	96.260 Å
Unit-cell length c length_c	105.510 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	I 2 2 2
Space-group number int_tables_number	23
Crystal system crystal_system	—

Joint neutron/x-ray structure of urate oxidase in complex with 8-hydroxyxanthine

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

Uricase

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

4n9m__assembly_1__model_1

4n9m__assembly_1__model_1 | I(q)

4n9m__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

5. Entities and Polymers Entities & Polymers (5)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 non-polymer

Entity 5 Entity 5 water

6. Fold Classification (SCOP + CATH) 3 domains

SCOP 2.08 (2 domains)

CATH v4.4 (1 domains)

7. Citations (2)

Joint neutron/x-ray structure of urate oxidase in complex with 8-hydroxyxanthine

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

Uricase

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

4n9m__assembly_1__model_1

4n9m__assembly_1__model_1 | I(q)

4n9m__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

5. Entities and Polymers Entities & Polymers (5)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 non-polymer

Entity 5 Entity 5 water

6. Fold Classification (SCOP + CATH) 3 domains

SCOP 2.08 (2 domains)

CATH v4.4 (1 domains)

7. Citations (2)