SAXSdb — 3ee7

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

Replicase polyprotein 1a

SARS coronavirus

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 2	PHOSPHATE ION × 4 GLYCEROL × 7 water × 2	Consistent with protein count
2	Protein homooligomer	Homooligomer	Protein 2	PHOSPHATE ION × 4 GLYCEROL × 9 water × 2	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	R1A_CVHSA
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–113； UniProt 4118–4230 Author chain B； PDBConstruct 1–113； UniProt 4118–4230 Author chain C； PDBConstruct 1–113； UniProt 4118–4230 Author chain D； PDBConstruct 1–113； UniProt 4118–4230

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	3ee7
Deposition date deposition_date	2008-09-04
Structure title title	Crystal Structure of SARS-CoV nsp9 G104E
Keywords keywords	;GXXXG, DIMERIZATION, SARS-COV, HELIX-HELIX, Hydrolase, Membrane, Metal-binding, Protease, RNA-binding, Thiol protease, Transmembrane, Zinc-finger, 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.

3ee7__assembly_2__model_1

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

Download this curve (.dat)

3ee7__assembly_2__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

3ee7__assembly_2__model_1 | P(r) · Pending

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

Rg（Guinier）	21.12 Å
Rg (electron density)	20.23 Å
Total Rg	20.98 Å
Atom count	1808
Residues	222
Excluded volume	32178 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`3ee7__assembly_1__model_1`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`3ee7__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 (4)

Entity 1 Entity 1 polymer

Description description	Replicase polyprotein 1a
Molecular weight formula_weight	13558.3 kDa
EC 编号 ec_number	3.4.22.-
Mutation mutation	G104E
Source method src_method	man
Copy count entity_count	4

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B,C,D
Atom count atom_count	3710

NNELSPVALRQMSCAAGTTQTACTDDNALAYYNNSKGGRFVLALLSDHQDLKWARFPKSDGTGTIYTELEPPCRFVTDTPKGPKVKYLYFIKGLNNLNRGMVLESLAATVRLQLEHHHHHH

Source Source

Source organism organism	SARS coronavirus
Common name common_name	SARS-CoV
NCBI taxonomy ID ncbi_taxonomy_id	227859
Host organism host_organism	Escherichia coli

Entity 2 Entity 2 non-polymer

Description description	PHOSPHATE ION
Molecular weight formula_weight	95.0 kDa
Source method src_method	syn
Copy count entity_count	8

Entity 3 Entity 3 non-polymer

Description description	GLYCEROL
Molecular weight formula_weight	92.1 kDa
Source method src_method	syn
Copy count entity_count	16

Entity 4 Entity 4 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	116

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6. Fold Classification (SCOP + CATH) 11 domains

SCOP 2.08 (7 domains)

Domain ID domain_id	d3ee7a_
Class class	b — All beta proteins
Fold Fold fold	b.140 — Replicase NSP9
Superfamily Superfamily superfamily	b.140.1 — Replicase NSP9
Family Family family	b.140.1.1 — Replicase NSP9

Domain ID domain_id	d3ee7b1
Class class	b — All beta proteins
Fold Fold fold	b.140 — Replicase NSP9
Superfamily Superfamily superfamily	b.140.1 — Replicase NSP9
Family Family family	b.140.1.1 — Replicase NSP9

Domain ID domain_id	d3ee7b2
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	d3ee7c1
Class class	b — All beta proteins
Fold Fold fold	b.140 — Replicase NSP9
Superfamily Superfamily superfamily	b.140.1 — Replicase NSP9
Family Family family	b.140.1.1 — Replicase NSP9

Domain ID domain_id	d3ee7c2
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	d3ee7d1
Class class	b — All beta proteins
Fold Fold fold	b.140 — Replicase NSP9
Superfamily Superfamily superfamily	b.140.1 — Replicase NSP9
Family Family family	b.140.1.1 — Replicase NSP9

Domain ID domain_id	d3ee7d2
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 (4 domains)

Domain ID domain_id	3ee7A01
Class class	2 — Mainly Beta
Architecture architecture	40 — Beta Barrel
Topology topology	10 — Thrombin, subunit H
Homologous superfamily homologous superfamily	250 — Replicase NSP9

Domain ID domain_id	3ee7B01
Class class	2 — Mainly Beta
Architecture architecture	40 — Beta Barrel
Topology topology	10 — Thrombin, subunit H
Homologous superfamily homologous superfamily	250 — Replicase NSP9

Domain ID domain_id	3ee7C01
Class class	2 — Mainly Beta
Architecture architecture	40 — Beta Barrel
Topology topology	10 — Thrombin, subunit H
Homologous superfamily homologous superfamily	250 — Replicase NSP9

Domain ID domain_id	3ee7D01
Class class	2 — Mainly Beta
Architecture architecture	40 — Beta Barrel
Topology topology	10 — Thrombin, subunit H
Homologous superfamily homologous superfamily	250 — Replicase NSP9

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Unit-cell length a length_a	91.836 Å
Unit-cell length b length_b	91.836 Å
Unit-cell length c length_c	84.217 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 31
Space-group number int_tables_number	144
Crystal system crystal_system	—

Resolution resolution	2.600 Å
Low-resolution limit resolution_low	35.960 Å
R factor r_factor	—
R_work r_work	0.2160
R_free r_free	0.2680

Crystal Structure of SARS-CoV nsp9 G104E

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

Replicase polyprotein 1a

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

3ee7__assembly_2__model_1

3ee7__assembly_2__model_1 | I(q)

3ee7__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 (4)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 water

6. Fold Classification (SCOP + CATH) 11 domains

SCOP 2.08 (7 domains)

CATH v4.4 (4 domains)

7. Citations (1)

Crystal Structure of SARS-CoV nsp9 G104E

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

Replicase polyprotein 1a

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

3ee7__assembly_2__model_1

3ee7__assembly_2__model_1 | I(q)

3ee7__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 (4)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 water

6. Fold Classification (SCOP + CATH) 11 domains

SCOP 2.08 (7 domains)

CATH v4.4 (4 domains)

7. Citations (1)