9saj

Crystal structure of SARS-CoV-2 NSP14 in complex with compound 5

Method: X-RAY DIFFRACTION

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

Guanine-N7 methyltransferase nsp14

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 monomer	Monomer	Protein 1	ZINC ION × 4 IMIDAZOLE × 3 1,2-ETHANEDIOL × 3 CHLORIDE ION × 1 1-[2-[[(2~{S},3~{S},4~{R},5~{R})-5-(6-aminopurin-9-yl)-3,4-bis(oxidanyl)oxolan-2-yl]methylsulfanyl]ethyl]-3-ethyl-urea × 1 water × 1	Consistent with protein count
2	Protein monomer	Monomer	Protein 1	ZINC ION × 3 IMIDAZOLE × 1 1,2-ETHANEDIOL × 6 CHLORIDE ION × 1 1-[2-[[(2~{S},3~{S},4~{R},5~{R})-5-(6-aminopurin-9-yl)-3,4-bis(oxidanyl)oxolan-2-yl]methylsulfanyl]ethyl]-3-ethyl-urea × 1 water × 1	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	R1AB_SARS2
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–525； UniProt 5926–6450 Author chain B； PDBConstruct 1–525； UniProt 5926–6450

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	9saj
Deposition date deposition_date	2025-08-07
Structure title title	Crystal structure of SARS-CoV-2 NSP14 in complex with compound 5
Keywords keywords	NSP14, SARS-CoV-2 NSP14, 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.

9saj__assembly_2__model_1

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

Download this curve (.dat)

9saj__assembly_2__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

9saj__assembly_2__model_1 | P(r) · Pending

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

Rg（Guinier）	26.75 Å
Rg (electron density)	26.19 Å
Total Rg	26.85 Å
Atom count	3526
Residues	443
Excluded volume	62433 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`9saj__assembly_1__model_1`	monomeric （1）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`9saj__assembly_2__model_1`	monomeric （1）	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 (7)

Entity 1 Entity 1 polymer

Description description	Guanine-N7 methyltransferase nsp14
Molecular weight formula_weight	59544.2 kDa
EC 编号 ec_number	2.1.1.56,3.1.13.-
Source method src_method	man
Copy count entity_count	2

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B
Atom count atom_count	7225

AENVTGLFKDCSKVITGLHPTQAPTHLSVDTKFKTEGLCVDIPGIPKDMTYRRLISMMGFKMNYQVNGYPNMFITREEAIRHVRAWIGFAVAGCHATREAVGTNLPLQLGFSTGVNLVAVPTGYVDTPNNTDFSRVSAKPPPGDQFKHLIPLMYKGLPWNVVRIKIVQMLSDTLKNLSDRVVFVLWAHGFELTSMKYFVKIGPERTCCLCDRRATCFSTASDTYACWHHSIGFDYVYNPFMIDVQQWGFTGNLQSNHDLYCQVHGNAHVASCDAIMTRCLAVHECFVKRVDWTIEYPIIGDELKINAACRKVQHMVVKAALLADKFPVLHDIGNPKAIKCVPQADVEWKFYDAQPCSDKAYKIEELFYSYATHSDKFTDGVCLFWNCNVDRYPANSIVCRFDTRVLSNLNLPGCDGGSLYVNKHAFHTPAFDKSAFVNLKQLPFFYYSDSPCESHGKQVVSDIDYVPLKSATCITRCNLGGAVCRHHANEYRLYLDAYNMMISAGFSLWVYKQFDTYNLWNTFTR

Source Source

Source organism organism	Severe acute respiratory syndrome coronavirus 2
NCBI taxonomy ID ncbi_taxonomy_id	2697049
Host organism host_organism	Escherichia coli

Entity 2 Entity 2 non-polymer

Description description	ZINC ION
Molecular weight formula_weight	65.4 kDa
Source method src_method	syn
Copy count entity_count	7

Entity 3 Entity 3 non-polymer

Description description	IMIDAZOLE
Molecular weight formula_weight	69.1 kDa
Source method src_method	syn
Copy count entity_count	4

Entity 4 Entity 4 non-polymer

Description description	1,2-ETHANEDIOL
Molecular weight formula_weight	62.1 kDa
Source method src_method	syn
Copy count entity_count	9

Entity 5 Entity 5 non-polymer

Description description	CHLORIDE ION
Molecular weight formula_weight	35.5 kDa
Source method src_method	syn
Copy count entity_count	2

Entity 6 Entity 6 non-polymer

Description description	1-[2-[[(2~{S},3~{S},4~{R},5~{R})-5-(6-aminopurin-9-yl)-3,4-bis(oxidanyl)oxolan-2-yl]methylsulfanyl]ethyl]-3-ethyl-urea
Molecular weight formula_weight	397.5 kDa
Source method src_method	syn
Copy count entity_count	2

Entity 7 Entity 7 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	122

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Unit-cell length a length_a	67.805 Å
Unit-cell length b length_b	102.363 Å
Unit-cell length c length_c	90.743 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	109.19 °
Unit-cell angle γ angle_gamma	90.00 °
Molecules per unit cell Z z_pdb	4

Space group space_group	P 1 21 1
Space-group number int_tables_number	4
Crystal system crystal_system	monoclinic

Resolution resolution	2.480 Å
Low-resolution limit resolution_low	65.710 Å
R factor r_factor	0.2023
R_work r_work	0.2014
R_free r_free	0.2386

Crystal structure of SARS-CoV-2 NSP14 in complex with compound 5

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

Guanine-N7 methyltransferase nsp14

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

9saj__assembly_2__model_1

9saj__assembly_2__model_1 | I(q)

9saj__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 (7)

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 non-polymer

Entity 5 Entity 5 non-polymer

Entity 6 Entity 6 non-polymer

Entity 7 Entity 7 water

7. Citations (1)

Crystal structure of SARS-CoV-2 NSP14 in complex with compound 5

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

Guanine-N7 methyltransferase nsp14

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

9saj__assembly_2__model_1

9saj__assembly_2__model_1 | I(q)

9saj__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 (7)

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 non-polymer

Entity 5 Entity 5 non-polymer

Entity 6 Entity 6 non-polymer

Entity 7 Entity 7 water

7. Citations (1)