SAXSdb — 2o3a

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

UPF0106 protein AF_0751

Archaeoglobus fulgidus

State in the Current Structure

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

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	Y751_ARCFU
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 4–170； UniProt 2–168 Author chain B； PDBConstruct 4–170； UniProt 2–168

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	2o3a
Deposition date deposition_date	2006-12-01
Structure title title	Crystal structure of a protein AF_0751 from Archaeoglobus fulgidus
Keywords keywords	;STRUCTURAL GENOMICS, UNKNOWN FUNCTION, PSI-2, Protein Structure Initiative, New York SGX Research Center for Structural Genomics, NYSGXRC ;; STRUCTURAL GENOMICS, UNKNOWN FUNCTION
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.

2o3a__assembly_1__model_1

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

Download this curve (.dat)

2o3a__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

2o3a__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	20.92 Å
Rg (electron density)	19.56 Å
Total Rg	20.63 Å
Atom count	2588
Residues	324
Excluded volume	46774 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`2o3a__assembly_1__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 (2)

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6. Fold Classification (SCOP + CATH) 6 domains

SCOP 2.08 (4 domains)

Domain ID domain_id	d2o3aa1
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.116 — alpha/beta knot
Superfamily Superfamily superfamily	c.116.1 — alpha/beta knot
Family Family family	c.116.1.8 — AF0751-like

Domain ID domain_id	d2o3aa2
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	d2o3ab2
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.116 — alpha/beta knot
Superfamily Superfamily superfamily	c.116.1 — alpha/beta knot
Family Family family	c.116.1.8 — AF0751-like

Domain ID domain_id	d2o3ab3
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 (2 domains)

Domain ID domain_id	2o3aA00
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	1280 — Alpha/beta knot
Homologous superfamily homologous superfamily	10 — SPOUT methyltransferase, trefoil knot domain

Domain ID domain_id	2o3aB00
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	1280 — Alpha/beta knot
Homologous superfamily homologous superfamily	10 — SPOUT methyltransferase, trefoil knot domain

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Unit-cell length a length_a	53.294 Å
Unit-cell length b length_b	55.890 Å
Unit-cell length c length_c	108.784 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	90.00 °
Unit-cell angle γ angle_gamma	90.00 °
Molecules per unit cell Z z_pdb	8

Space group space_group	P 21 21 21
Space-group number int_tables_number	19
Crystal system crystal_system	—

Resolution resolution	2.200 Å
Low-resolution limit resolution_low	19.035 Å
R factor r_factor	0.2330
R_work r_work	0.2300
R_free r_free	0.2920

Description description	UPF0106 protein AF_0751
Molecular weight formula_weight	20272.4 kDa
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	2679

Crystal structure of a protein AF_0751 from Archaeoglobus fulgidus

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

UPF0106 protein AF_0751

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

2o3a__assembly_1__model_1

2o3a__assembly_1__model_1 | I(q)

2o3a__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 (2)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 water

6. Fold Classification (SCOP + CATH) 6 domains

SCOP 2.08 (4 domains)

CATH v4.4 (2 domains)

7. Citations (1)

Source organism organism	Archaeoglobus fulgidus
NCBI taxonomy ID ncbi_taxonomy_id	2234
Host organism host_organism	Escherichia coli BL21(DE3)

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	91

Crystal structure of a protein AF_0751 from Archaeoglobus fulgidus

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

UPF0106 protein AF_0751

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

2o3a__assembly_1__model_1

2o3a__assembly_1__model_1 | I(q)

2o3a__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 (2)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 water

6. Fold Classification (SCOP + CATH) 6 domains

SCOP 2.08 (4 domains)

CATH v4.4 (2 domains)

7. Citations (1)