1IEC

CRYSTAL STRUCTURE OF THE CATALYTIC SITE MUTANT (H157A) OF THE HUMAN CYTOMEGALOVIRUS PROTEASE

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	6	294	20% PEG3350, 0.1M MES 6.0, 15% GLYCEROL, 5% t-BuOH, 0.3M NaCl, VAPOR DIFFUSION, HANGING DROP, temperature 294K

Crystal Properties
Matthews coefficient	Solvent content
2.17	43.37

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 76.1	α = 90
b = 76.1	β = 90
c = 169.4	γ = 90

Symmetry
Space Group	P 41 21 2

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	100	IMAGE PLATE	FUJI		1999-12-24	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	CHESS BEAMLINE A1	0.9090	CHESS	A1

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	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	2.2	30	97.3	0.077	19.76	4.21	26183	25377	2	2	17.2

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.2	2.28	95.8		0.161		3.9

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	Number Reflections (All)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (All)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	PDB ENTRY 1WPO	2.2	29.15	1	25251	25276	1856	96.7	0.226	0.226	0.226	0.269	RANDOM	34.8

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]
-5.43			-5.43		10.87

RMS Deviations
Key	Refinement Restraint Deviation
c_dihedral_angle_d	22.4
c_scangle_it	3.15
c_mcangle_it	2.43
c_scbond_it	2.17
c_mcbond_it	1.5
c_angle_deg	1.2
c_improper_angle_d	0.91
c_bond_d	0.006

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3348
Nucleic Acid Atoms
Solvent Atoms	144
Heterogen Atoms

Software

Software
Software Name	Purpose
GLRF	phasing
CNS	refinement
DENZO	data reduction
SCALEPACK	data scaling

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), 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 R01GM133198.