SAXSdb — 1r20

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

ULTRASPIRACLE PROTEIN

Heliothis virescens

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 2	ECDYSONE RECEPTOR × 1 （O18473） L-ALPHA-PHOSPHATIDYL-BETA-OLEOYL-GAMMA-PALMITOYL-PHOSPHATIDYLETHANOLAMINE × 1 N-(TERT-BUTYL)-3,5-DIMETHYL-N'-[(5-METHYL-2,3-DIHYDRO-1,4-BENZODIOXIN-6-YL)CARBONYL]BENZOHYDRAZIDE × 1 water × 2	Consistent with protein count
2	Protein heterocomplex	Heteromer	Protein 4	ECDYSONE RECEPTOR × 2 （O18473） L-ALPHA-PHOSPHATIDYL-BETA-OLEOYL-GAMMA-PALMITOYL-PHOSPHATIDYLETHANOLAMINE × 2 N-(TERT-BUTYL)-3,5-DIMETHYL-N'-[(5-METHYL-2,3-DIHYDRO-1,4-BENZODIOXIN-6-YL)CARBONYL]BENZOHYDRAZIDE × 2 water × 4	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	Q7SIF6_HELVI
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 2–263； UniProt 3–264

ECDYSONE RECEPTOR

Heliothis virescens

UniProt O18473

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 2	ULTRASPIRACLE PROTEIN × 1 （Q7SIF6） L-ALPHA-PHOSPHATIDYL-BETA-OLEOYL-GAMMA-PALMITOYL-PHOSPHATIDYLETHANOLAMINE × 1 N-(TERT-BUTYL)-3,5-DIMETHYL-N'-[(5-METHYL-2,3-DIHYDRO-1,4-BENZODIOXIN-6-YL)CARBONYL]BENZOHYDRAZIDE × 1 water × 2	Consistent with protein count
2	Protein heterocomplex	Heteromer	Protein 4	ULTRASPIRACLE PROTEIN × 2 （Q7SIF6） L-ALPHA-PHOSPHATIDYL-BETA-OLEOYL-GAMMA-PALMITOYL-PHOSPHATIDYLETHANOLAMINE × 2 N-(TERT-BUTYL)-3,5-DIMETHYL-N'-[(5-METHYL-2,3-DIHYDRO-1,4-BENZODIOXIN-6-YL)CARBONYL]BENZOHYDRAZIDE × 2 water × 4	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	ECR_HELVI
Isoform	—
PDB entities	2
Chains and sequence ranges	Author chain D； PDBConstruct 18–265； UniProt 306–550

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	1r20
Deposition date deposition_date	2003-09-25
Structure title title	Crystal structure of the ligand-binding domains of the heterodimer EcR/USP bound to the synthetic agonist BYI06830
Keywords keywords	;NUCLEAR RECEPTOR, HETERODIMER, ALPHA-HELICAL SANDWICH, Structural Proteomics in Europe, SPINE, Structural Genomics, hormone-growth factor receptor COMPLEX ;; hormone/growth factor receptor
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.

1r20__assembly_1__model_1

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

Download this curve (.dat)

1r20__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1r20__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	23.98 Å
Rg (electron density)	22.65 Å
Total Rg	23.53 Å
Atom count	3795
Residues	467
Excluded volume	68580 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1r20__assembly_1__model_1`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`1r20__assembly_2__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	ULTRASPIRACLE PROTEIN
Molecular weight formula_weight	29951.8 kDa
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	3806

MVQELSIERLLEMESLVADPSEEFQFLRVGPDSNVPPKFRAPVSSLCQIGNKQIAALVVWARDIPHFSQLEMEDQILLIKGSWNELLLFAIAWRSMEFLTEERDGVDGTGNRTTSPPQLMCLMPGMTLHRNSALQAGVGQIFDRVLSELSLKMRTLRVDQAEYVALKAIILLNPDVKGLKNRQEVEVLREKMFLCLDEYCRRSRSSEEGRFAALLLRLPALRSISLKSFEHLFFFHLVADTSIAGYIRDALRNHAPPIDTNMM

Source Source

Source organism organism	Heliothis virescens
Common name common_name	tobacco budworm
NCBI taxonomy ID ncbi_taxonomy_id	7102
Host organism host_organism	Escherichia coli

Entity 2 Entity 2 polymer

Description description	ECDYSONE RECEPTOR
Molecular weight formula_weight	30206.6 kDa
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	D

GSHMASMTGGQQMGRDPKNVPPLTANQKSLIARLVYYQEGYEQPSEEDLKRVTQTWQSDEDDEDSDMPFRQITEMTILTVQLIVEFAKGLPGFSKISQSDQITLLKACSSEVMMLRVARRYDAATDSVLFANNQAYTRDNYRKAGMAYVIEDLLHFCRCMYSMMMDNVHYALLTAIVIFSDRPGLEQPSLVEEIQRYYLNTLRVYILNQNSASPRSAVIFGKILGILTEIRTLGMQNSNMCISLKLKNRKLPPFLEEIWDVADVA

Source Source

Source organism organism	Heliothis virescens
Common name common_name	tobacco budworm
NCBI taxonomy ID ncbi_taxonomy_id	7102
Host organism host_organism	Escherichia coli

Entity 3 Entity 3 non-polymer

Description description	L-ALPHA-PHOSPHATIDYL-BETA-OLEOYL-GAMMA-PALMITOYL-PHOSPHATIDYLETHANOLAMINE
Molecular weight formula_weight	709.9 kDa
Source method src_method	syn
Copy count entity_count	1

Entity 4 Entity 4 non-polymer

Description description	N-(TERT-BUTYL)-3,5-DIMETHYL-N'-[(5-METHYL-2,3-DIHYDRO-1,4-BENZODIOXIN-6-YL)CARBONYL]BENZOHYDRAZIDE
Molecular weight formula_weight	396.5 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	11

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6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

Domain ID domain_id	d1r20a_
Class class	a — All alpha proteins
Fold Fold fold	a.123 — Nuclear receptor ligand-binding domain
Superfamily Superfamily superfamily	a.123.1 — Nuclear receptor ligand-binding domain
Family Family family	a.123.1.1 — Nuclear receptor ligand-binding domain

Domain ID domain_id	d1r20d_
Class class	a — All alpha proteins
Fold Fold fold	a.123 — Nuclear receptor ligand-binding domain
Superfamily Superfamily superfamily	a.123.1 — Nuclear receptor ligand-binding domain
Family Family family	a.123.1.1 — Nuclear receptor ligand-binding domain

CATH v4.4 (2 domains)

Domain ID domain_id	1r20A00
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	565 — Retinoid X Receptor
Homologous superfamily homologous superfamily	10 — Retinoid X Receptor

Domain ID domain_id	1r20D00
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	565 — Retinoid X Receptor
Homologous superfamily homologous superfamily	10 — Retinoid X Receptor

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Unit-cell length a length_a	149.429 Å
Unit-cell length b length_b	149.429 Å
Unit-cell length c length_c	61.058 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	6

Space group space_group	P 3 2 1
Space-group number int_tables_number	150
Crystal system crystal_system	—

Resolution resolution	3.000 Å
Low-resolution limit resolution_low	15.000 Å
R factor r_factor	0.2440
R_work r_work	0.2440
R_free r_free	0.2890

Crystal structure of the ligand-binding domains of the heterodimer EcR/USP bound to the synthetic agonist BYI06830

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

ULTRASPIRACLE PROTEIN

State in the Current Structure

Other States of the Same Protein in the Database

ECDYSONE RECEPTOR

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

1r20__assembly_1__model_1

1r20__assembly_1__model_1 | I(q)

1r20__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

Refinement Refinement

5. Entities and Polymers Entities & Polymers (5)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 polymer

Polymer Polymer

Source Source

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 non-polymer

Entity 5 Entity 5 water

6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

CATH v4.4 (2 domains)

7. Citations (1)

Crystal structure of the ligand-binding domains of the heterodimer EcR/USP bound to the synthetic agonist BYI06830

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

ULTRASPIRACLE 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

ECDYSONE RECEPTOR

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

1r20__assembly_1__model_1

1r20__assembly_1__model_1 | I(q)

1r20__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

Refinement Refinement

5. Entities and Polymers Entities & Polymers (5)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 polymer

Polymer Polymer

Source Source

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 non-polymer

Entity 5 Entity 5 water

6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

CATH v4.4 (2 domains)

7. Citations (1)