4EP3

Crystal Structure of inactive single chain wild-type HIV-1 Protease in Complex with the substrate CA-p2

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	6.2	295	126mM Phosphate buffer pH 6.2, 63mM Sodium Citrate, 24-29% Ammonium Sulfate, hanging drop, vapor diffusion, temperature 295K, VAPOR DIFFUSION, HANGING DROP

Crystal Properties
Matthews coefficient	Solvent content
2.01	38.8

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 51.046	α = 90
b = 58.935	β = 90
c = 61.451	γ = 90

Symmetry
Space Group	P 21 21 21

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	100	CCD	ADSC QUANTUM 315		2010-01-20		SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	NSLS BEAMLINE X29A	1.100	NSLS	X29A

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	1.81	50	99.7	0.068	13.5	7		17300

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	1.81	1.87	99.8		0.473		7	1674

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	1.81	42.53	17243	877	99.43	0.1905	0.1886	0.2269	RANDOM	34.666

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]
-1.37			-0.74		2.11

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	40.877
r_dihedral_angle_3_deg	12.893
r_dihedral_angle_4_deg	11.782
r_dihedral_angle_1_deg	5.939
r_angle_refined_deg	1.316
r_angle_other_deg	0.83
r_chiral_restr	0.079
r_bond_refined_d	0.009
r_gen_planes_refined	0.005
r_bond_other_d	0.001

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	40.877
r_dihedral_angle_3_deg	12.893
r_dihedral_angle_4_deg	11.782
r_dihedral_angle_1_deg	5.939
r_angle_refined_deg	1.316
r_angle_other_deg	0.83
r_chiral_restr	0.079
r_bond_refined_d	0.009
r_gen_planes_refined	0.005
r_bond_other_d	0.001
r_gen_planes_other	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1542
Nucleic Acid Atoms
Solvent Atoms	62
Heterogen Atoms	22

Software

Software
Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
REFMAC	refinement
PDB_EXTRACT	data extraction

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.