SAXSdb — 4naa

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

Ultraviolet-B receptor UVR8

Arabidopsis thaliana

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 2	MAGNESIUM ION × 2 water × 2	Consistent with protein count
2	Protein homooligomer	Homooligomer	Protein 2	MAGNESIUM ION × 4 water × 2	Consistent with protein count
3	Protein monomer	Monomer	Protein 1	MAGNESIUM ION × 1 water × 1	Consistent with protein count
4	Protein monomer	Monomer	Protein 1	MAGNESIUM ION × 1 water × 1	Consistent with protein count
5	Protein monomer	Monomer	Protein 1	MAGNESIUM ION × 3 water × 1	Consistent with protein count
6	Protein monomer	Monomer	Protein 1	MAGNESIUM ION × 1 water × 1	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	UVR8_ARATH
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–369； UniProt 13–381 Author chain B； PDBConstruct 1–369； UniProt 13–381 Author chain C； PDBConstruct 1–369； UniProt 13–381 Author chain D； PDBConstruct 1–369； UniProt 13–381

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	4naa
Deposition date deposition_date	2013-10-22
Structure title title	Crystal structure of UVB photoreceptor UVR8 from Arabidopsis thaliana and UV-induced structural changes at 120K
Keywords keywords	7-blade beta-propeller, SIGNALING PROTEIN; SIGNALING PROTEIN
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.

4naa__assembly_2__model_1

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

Download this curve (.dat)

4naa__assembly_2__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

4naa__assembly_2__model_1 | P(r) · Pending

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

Rg（Guinier）	26.14 Å
Rg (electron density)	25.40 Å
Total Rg	26.39 Å
Atom count	5604
Residues	738
Excluded volume	97965 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`4naa__assembly_1__model_1`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`4naa__assembly_2__model_1`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
3	1	`4naa__assembly_3__model_1`	monomeric （1）	Success	4.1.3-1-20251215 (887e7ef)	View Download
4	1	`4naa__assembly_4__model_1`	monomeric （1）	Success	4.1.3-1-20251215 (887e7ef)	View Download
5	1	`4naa__assembly_5__model_1`	monomeric （1）	Success	4.1.3-1-20251215 (887e7ef)	View Download
6	1	`4naa__assembly_6__model_1`	monomeric （1）	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	Ultraviolet-B receptor UVR8
Molecular weight formula_weight	40875.4 kDa
Source method src_method	man
Copy count entity_count	4

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B,C,D
Atom count atom_count	12991

PPRKVLIISAGASHSVALLSGDIVCSWGRGEDGQLGHGDAEDRPSPTQLSALDGHQIVSVTCGADHTVAYSQSGMEVYSWGWGDFGRLGHGNSSDLFTPLPIKALHGIRIKQIACGDSHCLAVTMEGEVQSWGRNQNGQLGLGDTEDSLVPQKIQAFEGIRIKMVAAGAEHTAAVTEDGDLYGWGWGRYGNLGLGDRTDRLVPERVTSTGGEKMSMVACGWRHTISVSYSGALYTYGWSKYGQLGHGDLEDHLIPHKLEALSNSFISQISGGWRHTMALTSDGKLYGWGWNKFGQVGVGNNLDQCSPVQVRFPDDQKVVQVSCGWRHTLAVTERNNVFAWGRGTNGQLGIGESVDRNFPKIIEALSVDGLEHHHHHH

Source Source

Source organism organism	Arabidopsis thaliana
Common name common_name	mouse-ear cress,thale-cress
NCBI taxonomy ID ncbi_taxonomy_id	3702
Host organism host_organism	Escherichia coli

Entity 2 Entity 2 non-polymer

Description description	MAGNESIUM ION
Molecular weight formula_weight	24.3 kDa
Source method src_method	syn
Copy count entity_count	6

Entity 3 Entity 3 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	1586

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6. Fold Classification (SCOP + CATH) 4 domains

CATH v4.4 (4 domains)

Domain ID domain_id	4naaA00
Class class	2 — Mainly Beta
Architecture architecture	130 — 7 Propeller
Topology topology	10 — Methylamine Dehydrogenase; Chain H
Homologous superfamily homologous superfamily	30 — Regulator of chromosome condensation 1/beta-lactamase-inhibitor protein II

Domain ID domain_id	4naaB00
Class class	2 — Mainly Beta
Architecture architecture	130 — 7 Propeller
Topology topology	10 — Methylamine Dehydrogenase; Chain H
Homologous superfamily homologous superfamily	30 — Regulator of chromosome condensation 1/beta-lactamase-inhibitor protein II

Domain ID domain_id	4naaC00
Class class	2 — Mainly Beta
Architecture architecture	130 — 7 Propeller
Topology topology	10 — Methylamine Dehydrogenase; Chain H
Homologous superfamily homologous superfamily	30 — Regulator of chromosome condensation 1/beta-lactamase-inhibitor protein II

Domain ID domain_id	4naaD00
Class class	2 — Mainly Beta
Architecture architecture	130 — 7 Propeller
Topology topology	10 — Methylamine Dehydrogenase; Chain H
Homologous superfamily homologous superfamily	30 — Regulator of chromosome condensation 1/beta-lactamase-inhibitor protein II

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Unit-cell length a length_a	112.521 Å
Unit-cell length b length_b	77.336 Å
Unit-cell length c length_c	189.312 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	95.62 °
Unit-cell angle γ angle_gamma	90.00 °
Molecules per unit cell Z z_pdb	16

Space group space_group	C 1 2 1
Space-group number int_tables_number	5
Crystal system crystal_system	—

Resolution resolution	1.670 Å
Low-resolution limit resolution_low	31.090 Å
R factor r_factor	0.1490
R_work r_work	0.1470
R_free r_free	0.1810

Crystal structure of UVB photoreceptor UVR8 from Arabidopsis thaliana and UV-induced structural changes at 120K

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

Ultraviolet-B receptor UVR8

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

4naa__assembly_2__model_1

4naa__assembly_2__model_1 | I(q)

4naa__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 (3)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 water

6. Fold Classification (SCOP + CATH) 4 domains

CATH v4.4 (4 domains)

7. Citations (1)

Crystal structure of UVB photoreceptor UVR8 from Arabidopsis thaliana and UV-induced structural changes at 120K

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

Ultraviolet-B receptor UVR8

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

4naa__assembly_2__model_1

4naa__assembly_2__model_1 | I(q)

4naa__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 (3)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 water

6. Fold Classification (SCOP + CATH) 4 domains

CATH v4.4 (4 domains)

7. Citations (1)