SAXSdb — 2nn2

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

Zinc finger and BTB domain-containing protein 7A

Homo sapiens

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
2	Protein homooligomer	Homooligomer	Protein 4	water × 4	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	ZBT7A_HUMAN
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 3–133； UniProt 1–131 Author chain B； PDBConstruct 3–133； UniProt 1–131

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	2nn2
Deposition date deposition_date	2006-10-23
Structure title title	Crystal structure of the BTB domain from the LRF/ZBTB7 transcriptional regulator
Keywords keywords	;Protein-protein interaction domain, transcription repressor, zinc-finger protein, BTB domain, candidate oncoprotein, POZ Domain, 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.

2nn2__assembly_2__model_1

Assembly 2 · Model 1 · CRYSOL 4.1.3-1-20251215 (887e7ef)

Download this curve (.dat)

2nn2__assembly_2__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

2nn2__assembly_2__model_1 | P(r) · Pending

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

Rg（Guinier）	30.65 Å
Rg (electron density)	30.69 Å
Total Rg	31.06 Å
Atom count	3538
Residues	468
Excluded volume	63283 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`2nn2__assembly_1__model_1`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`2nn2__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 (2)

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6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

Domain ID domain_id	d2nn2a_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.42 — POZ domain
Superfamily Superfamily superfamily	d.42.1 — POZ domain
Family Family family	d.42.1.0 — automated matches

Domain ID domain_id	d2nn2b_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.42 — POZ domain
Superfamily Superfamily superfamily	d.42.1 — POZ domain
Family Family family	d.42.1.0 — automated matches

CATH v4.4 (2 domains)

Domain ID domain_id	2nn2A00
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	710 — Potassium Channel Kv1.1; Chain A
Homologous superfamily homologous superfamily	10 — Potassium Channel Kv1.1; Chain A

Domain ID domain_id	2nn2B00
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	710 — Potassium Channel Kv1.1; Chain A
Homologous superfamily homologous superfamily	10 — Potassium Channel Kv1.1; Chain A

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Unit-cell length a length_a	72.143 Å
Unit-cell length b length_b	72.143 Å
Unit-cell length c length_c	116.048 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	16

Space group space_group	P 41 21 2
Space-group number int_tables_number	92
Crystal system crystal_system	—

Resolution resolution	2.100 Å
Low-resolution limit resolution_low	61.310 Å
R factor r_factor	0.2165
R_work r_work	0.2137
R_free r_free	0.2675

Description description	Zinc finger and BTB domain-containing protein 7A
Molecular weight formula_weight	14167.0 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	1882

Crystal structure of the BTB domain from the LRF/ZBTB7 transcriptional regulator

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

Zinc finger and BTB domain-containing protein 7A

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

2nn2__assembly_2__model_1

2nn2__assembly_2__model_1 | I(q)

2nn2__assembly_2__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) 4 domains

SCOP 2.08 (2 domains)

CATH v4.4 (2 domains)

7. Citations (1)

Source organism organism	Homo sapiens
Common name common_name	human
NCBI taxonomy ID ncbi_taxonomy_id	9606
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	113

Crystal structure of the BTB domain from the LRF/ZBTB7 transcriptional regulator

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

Zinc finger and BTB domain-containing protein 7A

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

2nn2__assembly_2__model_1

2nn2__assembly_2__model_1 | I(q)

2nn2__assembly_2__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) 4 domains

SCOP 2.08 (2 domains)

CATH v4.4 (2 domains)

7. Citations (1)