4OBJ

Crystal Structure of Inactive HIV-1 Protease in Complex with the p1-p6 substrate variant (S451N)

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1T3R	PDB entry 1T3R

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	5.5	295	1.0M Ammonium Sulphate, 0.1M Citrate, pH 5.5, VAPOR DIFFUSION, HANGING DROP, temperature 295K

Crystal Properties
Matthews coefficient	Solvent content
2	38.54

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 50.884	α = 90
b = 58.395	β = 90
c = 61.505	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	MAR CCD 165 mm	Mirrors	2009-03-09	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 14-ID-B	1.033	APS	14-ID-B

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Sym 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	1.75	50	99.3	0.058	28.6	7.3		18954		2

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.75	1.81	96		0.167	9.9	5.2

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	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	PDB entry 1T3R	1.75	39.21	17930	973	99.32	0.14546	0.14349	0.1829	RANDOM	15.845

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]
-0.33			0.03		0.31

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	42.706
r_dihedral_angle_3_deg	11.714
r_dihedral_angle_4_deg	8.962
r_dihedral_angle_1_deg	6.717
r_scbond_it	2.446
r_mcangle_it	1.865
r_angle_refined_deg	1.551
r_mcbond_it	1.236
r_mcbond_other	1.177
r_angle_other_deg	0.706
r_chiral_restr	0.101
r_gen_planes_refined	0.012
r_bond_refined_d	0.008
r_bond_other_d	0.003
r_gen_planes_other	0.001
r_nbd_refined
r_nbd_other
r_nbtor_refined
r_nbtor_other
r_xyhbond_nbd_refined
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_vdw_refined
r_symmetry_vdw_other
r_symmetry_hbond_refined
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_mcangle_other
r_scbond_other
r_scangle_it
r_scangle_other
r_long_range_B_refined
r_long_range_B_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1568
Nucleic Acid Atoms
Solvent Atoms	160
Heterogen Atoms	54

Software

Software
Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
AMoRE	phasing
REFMAC	refinement
PDB_EXTRACT	data extraction
BioCARS-developed	data collection
HKL-2000	data reduction
HKL-2000	data scaling