SAXSdb — 7v1k

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

Isoform 2 of Nuclear autoantigenic sperm protein

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	No other associated polymer	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	NASP-2_HUMAN
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–71； UniProt 30–100 Author chain A； PDBConstruct 72–252； UniProt 160–340

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	7v1k
Deposition date deposition_date	2021-08-04
Structure title title	Apo structure of sNASP core
Keywords keywords	histone chaperone, CHAPERONE; CHAPERONE
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.

7v1k__assembly_1__model_1

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

Download this curve (.dat)

7v1k__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

7v1k__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	34.56 Å
Rg (electron density)	34.06 Å
Total Rg	34.44 Å
Atom count	3480
Residues	440
Excluded volume	61619 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`7v1k__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 (1)

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Unit-cell length a length_a	95.358 Å
Unit-cell length b length_b	95.358 Å
Unit-cell length c length_c	206.229 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	90.00 °
Unit-cell angle γ angle_gamma	120.00 °
Molecules per unit cell Z z_pdb	12

Space group space_group	P 62 2 2
Space-group number int_tables_number	180
Crystal system crystal_system	—

Resolution resolution	3.287 Å
Low-resolution limit resolution_low	39.178 Å
R factor r_factor	0.2406
R_work r_work	0.2391
R_free r_free	0.2609

Description description	Isoform 2 of Nuclear autoantigenic sperm protein
Molecular weight formula_weight	28262.5 kDa
Source method src_method	man
Copy count entity_count	1

Polymer type type	polypeptide(L)
Chain IDs strand_id	A
Atom count atom_count	1740

Apo structure of sNASP core

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

Isoform 2 of Nuclear autoantigenic sperm 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

7v1k__assembly_1__model_1

7v1k__assembly_1__model_1 | I(q)

7v1k__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

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 'BL21-Gold(DE3)pLysS AG' ;

Apo structure of sNASP core

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

Isoform 2 of Nuclear autoantigenic sperm 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

7v1k__assembly_1__model_1

7v1k__assembly_1__model_1 | I(q)

7v1k__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

7. Citations (1)