SAXSdb — 1ux4

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

BNI1 PROTEIN

SACCHAROMYCES CEREVISIAE

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 2	No other associated polymer	Consistent with protein count
2	Protein homooligomer	Homooligomer	Protein 2	No other associated polymer	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	BNI1_YEAST
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–61； UniProt 1352–1412 Author chain A； PDBConstruct 62–410； UniProt 1417–1765 Author chain B； PDBConstruct 1–61； UniProt 1352–1412 Author chain B； PDBConstruct 62–410； UniProt 1417–1765

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	1ux4
Deposition date deposition_date	2004-02-19
Structure title title	Crystal structures of a Formin Homology-2 domain reveal a tethered-dimer architecture
Keywords keywords	STRUCTURAL PROTEIN, FH2 ACTIN CYTOSKELETON, COILED COIL; STRUCTURAL 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.

1ux4__assembly_1__model_1

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

Download this curve (.dat)

1ux4__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1ux4__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	37.78 Å
Rg (electron density)	37.71 Å
Total Rg	38.01 Å
Atom count	6644
Residues	820
Excluded volume	118970 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1ux4__assembly_1__model_1`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`1ux4__assembly_2__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 (1)

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6. Fold Classification (SCOP + CATH) 6 domains

SCOP 2.08 (2 domains)

Domain ID domain_id	d1ux4a_
Class class	a — All alpha proteins
Fold Fold fold	a.207 — Formin homology 2 domain (FH2 domain)
Superfamily Superfamily superfamily	a.207.1 — Formin homology 2 domain (FH2 domain)
Family Family family	a.207.1.1 — Formin homology 2 domain (FH2 domain)

Domain ID domain_id	d1ux4b_
Class class	a — All alpha proteins
Fold Fold fold	a.207 — Formin homology 2 domain (FH2 domain)
Superfamily Superfamily superfamily	a.207.1 — Formin homology 2 domain (FH2 domain)
Family Family family	a.207.1.1 — Formin homology 2 domain (FH2 domain)

CATH v4.4 (4 domains)

Domain ID domain_id	1ux4A01
Class class	6 — Special
Architecture architecture	10 — Helix non-globular
Topology topology	30 — Lyase 2-enoyl-coa Hydratase; Chain A, domain 2
Homologous superfamily homologous superfamily	50 —

Domain ID domain_id	1ux4A03
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	58 — Methane Monooxygenase Hydroxylase; Chain G, domain 1
Homologous superfamily homologous superfamily	2220 — Formin, FH2 domain

Domain ID domain_id	1ux4B01
Class class	6 — Special
Architecture architecture	10 — Helix non-globular
Topology topology	30 — Lyase 2-enoyl-coa Hydratase; Chain A, domain 2
Homologous superfamily homologous superfamily	50 —

Domain ID domain_id	1ux4B03
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	58 — Methane Monooxygenase Hydroxylase; Chain G, domain 1
Homologous superfamily homologous superfamily	2220 — Formin, FH2 domain

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Unit-cell length a length_a	98.100 Å
Unit-cell length b length_b	172.200 Å
Unit-cell length c length_c	120.600 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	112.30 °
Unit-cell angle γ angle_gamma	90.00 °
Molecules per unit cell Z z_pdb	8

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

Resolution resolution	3.300 Å
Low-resolution limit resolution_low	20.000 Å
R factor r_factor	0.2340
R_work r_work	0.2340
R_free r_free	0.2890

Description description	BNI1 PROTEIN
Molecular weight formula_weight	47207.7 kDa
Mutation mutation	YES
Source method src_method	man
Copy count entity_count	2

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B
Atom count atom_count	6644

Crystal structures of a Formin Homology-2 domain reveal a tethered-dimer architecture

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

BNI1 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

1ux4__assembly_1__model_1

1ux4__assembly_1__model_1 | I(q)

1ux4__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 (1)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

6. Fold Classification (SCOP + CATH) 6 domains

SCOP 2.08 (2 domains)

CATH v4.4 (4 domains)

7. Citations (2)

Source organism organism	SACCHAROMYCES CEREVISIAE
Common name common_name	;BAKER'S YEAST ;
NCBI taxonomy ID ncbi_taxonomy_id	4932
Host organism host_organism	ESCHERICHIA COLI

Crystal structures of a Formin Homology-2 domain reveal a tethered-dimer architecture

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

BNI1 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

1ux4__assembly_1__model_1

1ux4__assembly_1__model_1 | I(q)

1ux4__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 (1)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

6. Fold Classification (SCOP + CATH) 6 domains

SCOP 2.08 (2 domains)

CATH v4.4 (4 domains)

7. Citations (2)