SAXSdb — 4ivw

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

Estrogen receptor

Homo sapiens

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 2	Nuclear receptor coactivator 2 × 1 （Q15596） 4-[2-benzyl-7-(trifluoromethyl)-2H-indazol-3-yl]benzene-1,3-diol × 1 water × 1	Consistent with protein count
2	Protein heterocomplex	Heteromer	Protein 2	Nuclear receptor coactivator 2 × 1 （Q15596） 4-[2-benzyl-7-(trifluoromethyl)-2H-indazol-3-yl]benzene-1,3-diol × 1 water × 2	Consistent with protein count
3	Protein heterocomplex	Heteromer	Protein 4	Nuclear receptor coactivator 2 × 2 （Q15596） 4-[2-benzyl-7-(trifluoromethyl)-2H-indazol-3-yl]benzene-1,3-diol × 2 water × 3	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	ESR1_HUMAN
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–247； UniProt 303–549 Author chain B； PDBConstruct 1–247； UniProt 303–549

Nuclear receptor coactivator 2

OrganismNot specified

UniProt Q15596

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 2	Estrogen receptor × 1 （P03372） 4-[2-benzyl-7-(trifluoromethyl)-2H-indazol-3-yl]benzene-1,3-diol × 1 water × 1	Consistent with protein count
2	Protein heterocomplex	Heteromer	Protein 2	Estrogen receptor × 1 （P03372） 4-[2-benzyl-7-(trifluoromethyl)-2H-indazol-3-yl]benzene-1,3-diol × 1 water × 2	Consistent with protein count
3	Protein heterocomplex	Heteromer	Protein 4	Estrogen receptor × 2 （P03372） 4-[2-benzyl-7-(trifluoromethyl)-2H-indazol-3-yl]benzene-1,3-diol × 2 water × 3	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	NCOA2_HUMAN
Isoform	—
PDB entities	2
Chains and sequence ranges	Author chain C； PDBConstruct 1–10； UniProt 687–696 Author chain D； PDBConstruct 1–10； UniProt 687–696

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	4ivw
Deposition date deposition_date	2013-01-23
Structure title title	Crystal Structure of the Estrogen Receptor alpha Ligand-binding Domain in Complex with Constrained WAY-derivative, 6b
Keywords keywords	Nuclear hormone receptor, Transcription factor, Ligand-binding, Nucleus, TRANSCRIPTION; TRANSCRIPTION
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.

4ivw__assembly_1__model_1

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

Download this curve (.dat)

4ivw__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

4ivw__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	19.39 Å
Rg (electron density)	18.03 Å
Total Rg	18.97 Å
Atom count	1955
Residues	244
Excluded volume	35263 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`4ivw__assembly_1__model_1`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`4ivw__assembly_2__model_1`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
3	1	`4ivw__assembly_3__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 (4)

Entity 1 Entity 1 polymer

Description description	Estrogen receptor
Molecular weight formula_weight	28189.2 kDa
Mutation mutation	Y537S
Source method src_method	man
Copy count entity_count	2

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B
Atom count atom_count	4080

KNSLALSLTADQMVSALLDAEPPILYSEYDPTRPFSEASMMGLLTNLADRELVHMINWAKRVPGFVDLTLHDQVHLLECAWLEILMIGLVWRSMEHPGKLLFAPNLLLDRNQGKCVEGMVEIFDMLLATSSRFRMMNLQGEEFVCLKSIILLNSGVYTFLSSTLKSLEEKDHIHRVLDKITDTLIHLMAKAGLTLQQQHQRLAQLLLILSHIRHMSNKGMEHLYSMKCKNVVPLSDLLLEMLDAHRL

Source Source

Source organism organism	Homo sapiens
Common name common_name	human
NCBI taxonomy ID ncbi_taxonomy_id	9606
Host organism host_organism	Escherichia coli

Entity 2 Entity 2 polymer

Description description	Nuclear receptor coactivator 2
Molecular weight formula_weight	1276.5 kDa
Source method src_method	syn
Copy count entity_count	2

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	C,D

HKILHRLLQD

Entity 3 Entity 3 non-polymer

Description description	4-[2-benzyl-7-(trifluoromethyl)-2H-indazol-3-yl]benzene-1,3-diol
Molecular weight formula_weight	384.4 kDa
Source method src_method	syn
Copy count entity_count	2

Entity 4 Entity 4 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	138

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6. Fold Classification (SCOP + CATH) 2 domains

CATH v4.4 (2 domains)

Domain ID domain_id	4ivwA00
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	4ivwB00
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	54.480 Å
Unit-cell length b length_b	81.400 Å
Unit-cell length c length_c	58.602 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	109.82 °
Unit-cell angle γ angle_gamma	90.00 °
Molecules per unit cell Z z_pdb	4

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

Resolution resolution	2.060 Å
Low-resolution limit resolution_low	46.141 Å
R factor r_factor	0.1876
R_work r_work	0.1846
R_free r_free	0.2295

Crystal Structure of the Estrogen Receptor alpha Ligand-binding Domain in Complex with Constrained WAY-derivative, 6b

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

Estrogen receptor

State in the Current Structure

Other States of the Same Protein in the Database

Nuclear receptor coactivator 2

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

4ivw__assembly_1__model_1

4ivw__assembly_1__model_1 | I(q)

4ivw__assembly_1__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 (4)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 polymer

Polymer Polymer

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 water

6. Fold Classification (SCOP + CATH) 2 domains

CATH v4.4 (2 domains)

7. Citations (1)

Crystal Structure of the Estrogen Receptor alpha Ligand-binding Domain in Complex with Constrained WAY-derivative, 6b

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

Estrogen 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

Nuclear receptor coactivator 2

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

4ivw__assembly_1__model_1

4ivw__assembly_1__model_1 | I(q)

4ivw__assembly_1__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 (4)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 polymer

Polymer Polymer

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 water

6. Fold Classification (SCOP + CATH) 2 domains

CATH v4.4 (2 domains)

7. Citations (1)