SAXSdb — 7ce0

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

Nucleoprotein

Severe acute respiratory syndrome coronavirus 2

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 2	water × 2	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	NCAP_SARS2
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 7–116； UniProt 255–364 Author chain B； PDBConstruct 7–116； UniProt 255–364 Author chain C； PDBConstruct 7–116； UniProt 255–364 Author chain D； PDBConstruct 7–116； UniProt 255–364

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	7ce0
Deposition date deposition_date	2020-06-21
Structure title title	Crystal structure of 2019-nCoV nucleocapsid C-terminal domain (CTD) protein
Keywords keywords	COVID-19, RNA binding, nucleocapsid, 2019-nCoV, dimerization, VIRAL PROTEIN; VIRAL 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.

7ce0__assembly_1__model_1

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

Download this curve (.dat)

7ce0__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

7ce0__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	18.66 Å
Rg (electron density)	17.68 Å
Total Rg	18.73 Å
Atom count	1762
Residues	220
Excluded volume	31160 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`7ce0__assembly_1__model_1`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`7ce0__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 (2)

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6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (4 domains)

Domain ID domain_id	d7ce0a_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.254 — Nucleocapsid protein dimerization domain
Superfamily Superfamily superfamily	d.254.1 — Nucleocapsid protein dimerization domain
Family Family family	d.254.1.2 — Coronavirus nucleocapsid protein

Domain ID domain_id	d7ce0b_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.254 — Nucleocapsid protein dimerization domain
Superfamily Superfamily superfamily	d.254.1 — Nucleocapsid protein dimerization domain
Family Family family	d.254.1.2 — Coronavirus nucleocapsid protein

Domain ID domain_id	d7ce0c_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.254 — Nucleocapsid protein dimerization domain
Superfamily Superfamily superfamily	d.254.1 — Nucleocapsid protein dimerization domain
Family Family family	d.254.1.2 — Coronavirus nucleocapsid protein

Domain ID domain_id	d7ce0d_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.254 — Nucleocapsid protein dimerization domain
Superfamily Superfamily superfamily	d.254.1 — Nucleocapsid protein dimerization domain
Family Family family	d.254.1.2 — Coronavirus nucleocapsid protein

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Unit-cell length a length_a	43.726 Å
Unit-cell length b length_b	50.310 Å
Unit-cell length c length_c	69.134 Å
Unit-cell angle α angle_alpha	73.88 °
Unit-cell angle β angle_beta	89.94 °
Unit-cell angle γ angle_gamma	82.55 °
Molecules per unit cell Z z_pdb	4

Space group space_group	P 1
Space-group number int_tables_number	1
Crystal system crystal_system	triclinic

Resolution resolution	1.500 Å
Low-resolution limit resolution_low	26.820 Å
R factor r_factor	0.1773
R_work r_work	0.1767
R_free r_free	0.1903

Description description	Nucleoprotein
Molecular weight formula_weight	13299.9 kDa
Source method src_method	man
Copy count entity_count	4

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B,C,D
Atom count atom_count	4274

Crystal structure of 2019-nCoV nucleocapsid C-terminal domain (CTD) protein

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

Nucleoprotein

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

7ce0__assembly_1__model_1

7ce0__assembly_1__model_1 | I(q)

7ce0__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) 4 domains

SCOP 2.08 (4 domains)

7. Citations (1)

Source organism organism	Severe acute respiratory syndrome coronavirus 2
Common name common_name	2019-nCoV
NCBI taxonomy ID ncbi_taxonomy_id	2697049
Host organism host_organism	Escherichia coli BL21

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	740

Crystal structure of 2019-nCoV nucleocapsid C-terminal domain (CTD) protein

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

Nucleoprotein

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

7ce0__assembly_1__model_1

7ce0__assembly_1__model_1 | I(q)

7ce0__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) 4 domains

SCOP 2.08 (4 domains)

7. Citations (1)