SAXSdb — 1ku1

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

ARF guanine-nucleotide exchange factor 2

Saccharomyces cerevisiae

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein monomer	Monomer	Protein 1	water × 1	Consistent with protein count
2	Protein monomer	Monomer	Protein 1	water × 1	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	GEA2_YEAST
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 22–230； UniProt 558–766 Author chain B； PDBConstruct 22–230； UniProt 558–766

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	1ku1
Deposition date deposition_date	2002-01-20
Structure title title	Crystal Structure of the Sec7 Domain of Yeast GEA2
Keywords keywords	Sec7 domain, Guanine Nucleotide Exchange Factor (GEF), ARF small GTP-binding proteins, ENDOCYTOSIS-EXOCYTOSIS COMPLEX; ENDOCYTOSIS/EXOCYTOSIS
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.

1ku1__assembly_1__model_1

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

Download this curve (.dat)

1ku1__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1ku1__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	21.10 Å
Rg (electron density)	20.10 Å
Total Rg	21.00 Å
Atom count	1706
Residues	211
Excluded volume	30307 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1ku1__assembly_1__model_1`	monomeric （1）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`1ku1__assembly_2__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 (2)

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6. Fold Classification (SCOP + CATH) 10 domains

SCOP 2.08 (6 domains)

Domain ID domain_id	d1ku1a1
Class class	a — All alpha proteins
Fold Fold fold	a.118 — alpha-alpha superhelix
Superfamily Superfamily superfamily	a.118.3 — Sec7 domain
Family Family family	a.118.3.1 — Sec7 domain

Domain ID domain_id	d1ku1a2
Class class	l — Artifacts
Fold Fold fold	l.1 — Tags
Superfamily Superfamily superfamily	l.1.1 — Tags
Family Family family	l.1.1.1 — Tags

Domain ID domain_id	d1ku1a3
Class class	l — Artifacts
Fold Fold fold	l.1 — Tags
Superfamily Superfamily superfamily	l.1.1 — Tags
Family Family family	l.1.1.1 — Tags

Domain ID domain_id	d1ku1b1
Class class	a — All alpha proteins
Fold Fold fold	a.118 — alpha-alpha superhelix
Superfamily Superfamily superfamily	a.118.3 — Sec7 domain
Family Family family	a.118.3.1 — Sec7 domain

Domain ID domain_id	d1ku1b2
Class class	l — Artifacts
Fold Fold fold	l.1 — Tags
Superfamily Superfamily superfamily	l.1.1 — Tags
Family Family family	l.1.1.1 — Tags

Domain ID domain_id	d1ku1b3
Class class	l — Artifacts
Fold Fold fold	l.1 — Tags
Superfamily Superfamily superfamily	l.1.1 — Tags
Family Family family	l.1.1.1 — Tags

CATH v4.4 (4 domains)

Domain ID domain_id	1ku1A01
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	220 — Annexin V; domain 1
Homologous superfamily homologous superfamily	20 —

Domain ID domain_id	1ku1A02
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	1000 — Arf Nucleotide-binding Site Opener; domain 2
Homologous superfamily homologous superfamily	11 — Arf Nucleotide-binding Site Opener,domain 2

Domain ID domain_id	1ku1B01
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	220 — Annexin V; domain 1
Homologous superfamily homologous superfamily	20 —

Domain ID domain_id	1ku1B02
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	1000 — Arf Nucleotide-binding Site Opener; domain 2
Homologous superfamily homologous superfamily	11 — Arf Nucleotide-binding Site Opener,domain 2

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Unit-cell length a length_a	125.052 Å
Unit-cell length b length_b	75.881 Å
Unit-cell length c length_c	76.199 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	105.37 °
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	1.930 Å
Low-resolution limit resolution_low	24.040 Å
R factor r_factor	0.2200
R_work r_work	0.2140
R_free r_free	0.2280

Description description	ARF guanine-nucleotide exchange factor 2
Molecular weight formula_weight	26547.9 kDa
Mutation mutation	I747V
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	3629

Crystal Structure of the Sec7 Domain of Yeast GEA2

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

ARF guanine-nucleotide exchange factor 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

1ku1__assembly_1__model_1

1ku1__assembly_1__model_1 | I(q)

1ku1__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 (2)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 water

6. Fold Classification (SCOP + CATH) 10 domains

SCOP 2.08 (6 domains)

CATH v4.4 (4 domains)

7. Citations (1)

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

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	217

Crystal Structure of the Sec7 Domain of Yeast GEA2

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

ARF guanine-nucleotide exchange factor 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

1ku1__assembly_1__model_1

1ku1__assembly_1__model_1 | I(q)

1ku1__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 (2)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 water

6. Fold Classification (SCOP + CATH) 10 domains

SCOP 2.08 (6 domains)

CATH v4.4 (4 domains)

7. Citations (1)