Experiment: 27ZY

Crystal structure of SARS-CoV-2 Papain-Like protease (PLpro) C111S mutant with active-site sulfate

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	9VAO

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP		277	0.1 M Tris-HCl (pH 7.0) and 1.6 M (NH4)2SO4

Crystal Properties
Matthews coefficient	Solvent content
3.78	67.42

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 82.751	α = 90
b = 82.751	β = 90
c = 134.674	γ = 120

Symmetry
Space Group	P 32 2 1

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	100	PIXEL	DECTRIS PILATUS3 R 1M		2025-03-27	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	LIQUID ANODE	Excillum MetalJet D2+ 70 kV	1.3477

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	CC (Half)	Net I Over Average Sigma (I)	Redundancy	Number Reflections (All)	Number Reflections (Observed)	Observed Criterion Sigma (F)	Observed Criterion Sigma (I)	B (Isotropic) From Wilson Plot
1	1.82	50	97.5	0.066	0.999	22.5	5.9		47059			23.22

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	CC (Half)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.82	1.89	79		0.531		2.3

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free (DCC)	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	FREE R-VALUE	9VAO	1.89	15.69	1.35	43090	1834	99.53	0.1696	0.1682	0.1672	0.2013	0.1999	25.81

Temperature Factor Modeling
Anisotropic B[1][1]	Anisotropic B[1][2]	Anisotropic B[1][3]	Anisotropic B[2][2]	Anisotropic B[2][3]	Anisotropic B[3][3]

RMS Deviations
Key	Refinement Restraint Deviation
f_dihedral_angle_d	14.6657
f_angle_d	0.713
f_chiral_restr	0.0506
f_bond_d	0.0071
f_plane_restr	0.0054

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2500
Nucleic Acid Atoms
Solvent Atoms	365
Heterogen Atoms	29

Software

Software
Software Name	Purpose
XDS	data reduction
XDS	data scaling
PHASER	phasing
Coot	model building
PHENIX	refinement