8ZQ8 | pdb_00008zq8

SARS-Cov-2 3CL protease in complex with macrocyclic inhibitor CG-1039

PDB DOI: https://doi.org/10.2210/pdb8ZQ8/pdb

Classification: VIRAL PROTEIN
Organism(s): Severe acute respiratory syndrome coronavirus 2
Expression System: Escherichia coli BL21(DE3)
Mutation(s): No

Deposited: 2024-06-01 Released: 2025-06-11
Deposition Author(s): Chen, X., Hou, K., Tang, X.
Funding Organization(s): Not funded

Experimental Data Snapshot

Method: X-RAY DIFFRACTION
Resolution: 1.77 Å
R-Value Free:
0.223 (Depositor), 0.229 (DCC)
R-Value Work:
0.167 (Depositor), 0.177 (DCC)
R-Value Observed:
0.170 (Depositor)

Starting Model: experimental
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wwPDB Validation 3D Report Full Report

Ligand Structure Quality Assessment

This is version 1.0 of the entry. See complete history.

Literature

SARS-Cov-2 3CL protease in complex with macrocyclic inhibitor CG-1039

Chen, X., Hou, K., Tang, X.

To be published.

Macromolecule Content

Total Structure Weight: 35.32 kDa
Atom Count: 2,811
Modeled Residue Count: 305
Deposited Residue Count: 316
Unique protein chains: 1

Macromolecules

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(by identity cutoff) | 3D Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
3C-like proteinase nsp5	A	316	Severe acute respiratory syndrome coronavirus 2	Mutation(s): 0 Gene Names: rep, 1a-1b EC: 3.4.22.69
UniProt
Find proteins for P0DTD1 (Severe acute respiratory syndrome coronavirus 2) Explore P0DTD1 Go to UniProtKB: P0DTD1
Entity Groups
Sequence Clusters	30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt Group	P0DTD1
Sequence Annotations Expand
Reference Sequence

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram	3D Interactions
A1D8T (Subject of Investigation/LOI) Query on A1D8T Download Ideal Coordinates CCD File SDF format, chain B [auth A] MOL2 format, chain B [auth A] mmCIF format, chain B [auth A]	B [auth A]	CG-1039 C₃₀ H₄₀ N₆ O₆ DJPAHHWHKANOFU-BXRCACEASA-N		Interactions Focus chain B [auth A] Interactions & Density Focus chain B [auth A]

Experimental Data & Validation

Experimental Data

Method: X-RAY DIFFRACTION
Resolution: 1.77 Å
R-Value Free: 0.223 (Depositor), 0.229 (DCC)
R-Value Work: 0.167 (Depositor), 0.177 (DCC)
R-Value Observed: 0.170 (Depositor)

Space Group: C 1 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 114.39	α = 90
b = 52.95	β = 103.51
c = 45.42	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
iMOSFLM	data reduction
pointless	data scaling
PHASER	phasing

Structure Validation

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Ligand Structure Quality Assessment

Entry History & Funding Information

Deposition Data

Released Date: 2025-06-11

Deposition Author(s):

Funding Organization	Location	Grant Number
Not funded		--

Revision History (Full details and data files)

Version 1.0: 2025-06-11
Type: Initial release

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729.