SAXSdb — 8x5o

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

spike protein S2

Coronavirus HKU15

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Insufficient information	Homooligomer	Protein 3	water × 3	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	SPIKE_BCHK4
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–76； UniProt 983–1058 Author chain B； PDBConstruct 1–76； UniProt 983–1058 Author chain C； PDBConstruct 1–76； UniProt 983–1058

spike protein S2

Coronavirus HKU15

UniProt S4WYD6

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Insufficient information	Homooligomer	Protein 3	water × 3	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	S4WYD6_BCHK4
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 83–126； UniProt 1247–1290 Author chain B； PDBConstruct 83–126； UniProt 1247–1290 Author chain C； PDBConstruct 83–126； UniProt 1247–1290

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	8x5o
Deposition date deposition_date	2023-11-17
Last revision last_revision	2025-05-21
Structure title title	Crystal structure of the post-fusion core of MjHKUr-CoV spike protein.
Keywords keywords	MjHKUr-CoV, spike protein, postfusion, VIRUS, 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.

8x5o__assembly_1__model_1

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

Download this curve (.dat)

8x5o__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

8x5o__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	29.70 Å
Rg (electron density)	30.34 Å
Total Rg	30.53 Å
Atom count	2487
Residues	329
Excluded volume	44397 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`8x5o__assembly_1__model_1`	trimeric （3）	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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Unit-cell length a length_a	198.736 Å
Unit-cell length b length_b	198.736 Å
Unit-cell length c length_c	64.130 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	36

Space group space_group	P 63 2 2
Space-group number int_tables_number	182
Crystal system crystal_system	—

Resolution resolution	2.670 Å
Low-resolution limit resolution_low	34.420 Å
R factor r_factor	0.2433
R_work r_work	0.2407
R_free r_free	0.2915

Description description	spike protein S2
Molecular weight formula_weight	13405.9 kDa
Source method src_method	man
Copy count entity_count	3

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B,C
Atom count atom_count	2612

Crystal structure of the post-fusion core of MjHKUr-CoV spike protein.

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

spike protein S2

State in the Current Structure

Other States of the Same Protein in the Database

spike protein S2

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

8x5o__assembly_1__model_1

8x5o__assembly_1__model_1 | I(q)

8x5o__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

7. Citations (1)

Source organism organism	Coronavirus HKU15
NCBI taxonomy ID ncbi_taxonomy_id	1965089
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	125

Crystal structure of the post-fusion core of MjHKUr-CoV spike protein.

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

spike protein S2

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

spike protein S2

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

8x5o__assembly_1__model_1

8x5o__assembly_1__model_1 | I(q)

8x5o__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

7. Citations (1)