SAXSdb — 8z46

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

3C-like proteinase nsp5

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	;(2~{S})-~{N}-(3-azanyl-3-oxidanylidene-propyl)-4-[4-[[(1~{S})-1-(2-chlorophenyl)-3-oxidanyl-propyl]amino]-6-(methylamino)-1,3,5-triazin-2-yl]-1-ethanoyl-piperazine-2-carboxamide ; × 2 water × 2	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	R1A_SARS2
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–306； UniProt 3264–3569

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	8z46
Deposition date deposition_date	2024-04-16
Last revision last_revision	2025-02-26
Structure title title	SARS-CoV-2 3CL protease (3CL pro) in complex with a novel inhibitor
Keywords keywords	SARS-CoV-2 3CL protease, Inhibitor, Complex, 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.

8z46__assembly_1__model_1

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

Download this curve (.dat)

8z46__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

8z46__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	26.46 Å
Rg (electron density)	25.49 Å
Total Rg	26.35 Å
Atom count	4662
Residues	602
Excluded volume	82727 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`8z46__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 (3)

Entity 1 Entity 1 polymer

Description description	3C-like proteinase nsp5
Molecular weight formula_weight	33825.5 kDa
EC 编号 ec_number	3.4.22.69
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A
Atom count atom_count	2475

SGFRKMAFPSGKVEGCMVQVTCGTTTLNGLWLDDVVYCPRHVICTSEDMLNPNYEDLLIRKSNHNFLVQAGNVQLRVIGHSMQNCVLKLKVDTANPKTPKYKFVRIQPGQTFSVLACYNGSPSGVYQCAMRPNFTIKGSFLNGSCGSVGFNIDYDCVSFCYMHHMELPTGVHAGTDLEGNFYGPFVDRQTAQAAGTDTTITVNVLAWLYAAVINGDRWFLNRFTTTLNDFNLVAMKYNYEPLTQDHVDILGPLSAQTGIAVLDMCASLKELLQNGMNGRTILGSALLEDEFTPFDVVRQCSGVTFQ

Source Source

Source organism organism	Severe acute respiratory syndrome coronavirus 2
NCBI taxonomy ID ncbi_taxonomy_id	2697049
Host organism host_organism	Escherichia coli BL21(DE3)

Entity 2 Entity 2 non-polymer

Description description	;(2~{S})-~{N}-(3-azanyl-3-oxidanylidene-propyl)-4-[4-[[(1~{S})-1-(2-chlorophenyl)-3-oxidanyl-propyl]amino]-6-(methylamino)-1,3,5-triazin-2-yl]-1-ethanoyl-piperazine-2-carboxamide ;
Molecular weight formula_weight	534.0 kDa
Source method src_method	syn
Copy count entity_count	1

Entity 3 Entity 3 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	144

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Unit-cell length a length_a	97.886 Å
Unit-cell length b length_b	81.990 Å
Unit-cell length c length_c	51.770 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	114.92 °
Unit-cell angle γ angle_gamma	90.00 °
Molecules per unit cell Z z_pdb	4

Space group space_group	C 1 2 1
Space-group number int_tables_number	5
Crystal system crystal_system	—

Resolution resolution	1.570 Å
Low-resolution limit resolution_low	42.380 Å
R factor r_factor	0.1975
R_work r_work	0.1963
R_free r_free	0.2207

SARS-CoV-2 3CL protease (3CL pro) in complex with a novel inhibitor

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

3C-like proteinase nsp5

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

8z46__assembly_1__model_1

8z46__assembly_1__model_1 | I(q)

8z46__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 (3)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 water

7. Citations (1)

SARS-CoV-2 3CL protease (3CL pro) in complex with a novel inhibitor

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

3C-like proteinase nsp5

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

8z46__assembly_1__model_1

8z46__assembly_1__model_1 | I(q)

8z46__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 (3)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 water

7. Citations (1)